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Designed to work with 1\/2″ NPT bag fittings, this kit ensures a secure, leak-free setup for easy inflation and reliable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDOT Air Line\u003c\/li\u003e\n\u003cli\u003ePush Lock Fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e20 Feet of 1\/4″ Air Line\u003c\/li\u003e\n\u003cli\u003e1\/2″ NPT Bag Fittings\u003c\/li\u003e\n\u003cli\u003eTee\u003c\/li\u003e\n\u003cli\u003eFill Valve\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWorks With Tinworks PN: 7387-SB-AO30\u003c\/li\u003e\n\u003cli\u003eWorks With Tinworks PN: 7387-SB-AOSUB\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481926570080,"sku":"7387-SB-AO30LK","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/ChatGPT_Image_Jul_1_2026_12_55_26_PM.png?v=1782928549"},{"product_id":"88-98-c3500-helper-bags","title":"88-98 C3500 Helper Bags","description":"\u003cp\u003eEnhance towing stability and support for your lowered OBS dually with these direct bolt-on helper bags. Designed to bolt directly into Belltech and Tinworks notches and made from 1\/4″ steel plate, these helper bags provide a strong, seamless fit. They add up to 3,000 pounds of extra weight capacity, delivering reliable performance and improved ride quality under heavy loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4 Inch Steel Construction\u003c\/li\u003e\n\u003cli\u003eUses Existing Holes in Tinworks Notch\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 16-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFirestone 9000 Air Bags\u003c\/li\u003e\n\u003cli\u003eUpper \u0026amp; Lower Bag Mounting Brackets\u003c\/li\u003e\n\u003cli\u003eGrade 8 Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1988 – 1998 C3500 Dually 2WD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e-Made In USA-\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481926799456,"sku":"13-9010","price":395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/ChatGPT_Image_Jul_7_2026_01_53_09_PM.png?v=1783450699"},{"product_id":"88-98-obs-air-tank-bracket","title":"88-98 OBS Air Tank Bracket","description":"\u003cp\u003eThis pre-drilled air tank bracket is designed to hold two 3-gallon tanks and dual compressors with ease. Built for a clean, organized setup, it features a direct bolt-in design for quick installation. Perfect for keeping your air system secure, functional, and easy to maintain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\/16 Inch Steel Construction\u003c\/li\u003e\n\u003cli\u003eUses Existing Holes in Frame to Mount\u003c\/li\u003e\n\u003cli\u003eShipped Raw\u003c\/li\u003e\n\u003cli\u003ePre drilled for Airlift Tanks (11958)\u003c\/li\u003e\n\u003cli\u003ePre drilled for Dual Viair Compressors (44442)\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 36-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMounting Brackets\u003c\/li\u003e\n\u003cli\u003eGrade 8 Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1988 – 1998 C3500 Dually 2WD\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e-Made In USA-\u003c\/strong\u003e\u003c\/p\u003e\n\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/L7FGuFep4e0?si=4ikZjJrpE3fLp0VP\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen\u003e\u003c\/iframe\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481926963296,"sku":"13-9014","price":250.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/ChatGPT_Image_Jul_10_2026_12_43_20_PM.png?v=1783705686"},{"product_id":"88-98-c3500-flip-kit","title":"88-98 C3500 Flip Kit","description":"\u003cp\u003eDesigned as a one-piece unit for maximum strength, this 8-inch flip kit for OBS C3500 trucks is built from durable 1\/4-inch steel plate. It provides a reliable, heavy-duty solution for lowering your truck while maintaining structural integrity and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4 Steel\u003c\/li\u003e\n\u003cli\u003e8″ Drop\u003c\/li\u003e\n\u003cli\u003eOffset Mounting Hole to Center Wheels in Opening After Lowering\u003c\/li\u003e\n\u003cli\u003eAllows use of Factory Length Driveshaft\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 10-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeft \u0026amp; Right Brackets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88-98 C3500 Trucks\u003c\/li\u003e\n\u003cli\u003e3 1\/2″ Axle Tube\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Yes","offer_id":42481927749728,"sku":"13-9008U","price":160.0,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":42481927782496,"sku":"13-9008","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/514_tinworks-fabrication-iowa-classic-chevy-parts-custom-shop-37.jpg?v=1781810807"},{"product_id":"88-98-billet-aluminum-cab-mounts","title":"88-98 Billet Aluminum Cab Mounts","description":"\u003cp\u003eThese billet aluminum cab mounts are a factory replacement for your 1988-1998 Chevy pick up.  The mounts are machined from T6061 aluminum and feature stainless steel hardware.  The aluminum mount sits directly on top of the frame just as the original mount.  One stainless washer sits on top of the aluminum mount and will keep the body from digging into the aluminum.  One large 1\/4” thick washer goes onto the bolt and passed up through the frame bracket.  There are no other lower parts to these mounts.  \u003cb\u003ePLEASE MAKE SURE THAT YOU USE PLENTY OF ANTISEIZE!!\u003c\/b\u003e  If you do not, the stainless bolt will seize on the nut and you will have to cut the bolt off!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e  These cab mounts will solid mount the cab to the chassis.  If you do not box or reinforce your chassis there could be long term damage to the cab mount supports.  That being said, confirm that your cab floor, cab support rails, and inner rockers are solid before installation.  Rest assured that if you have a boxed frame or aftermarket frame with a good cab, there is no danger.  We have had these cab mounts installed in our truck for 6 years of racing now with no issue.  There is also no noticeable increase to NVH with these cab mounts.  Only if you have solid engine mounts or something contacting the frame will the resonance transmit into the cab.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncrease chassis rigidity by using the cab as a superstructure.\u003c\/li\u003e\n\u003cli\u003eProvide a solid platform for a rollcage\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/Level_7_Motorsports_LLC_Liability_Waiver_RELEASE_OF_LIABILITY.pdf?v=1771533652\" target=\"_blank\" title=\"Level 7 Liability Waiver\" rel=\"noopener\"\u003ePlease read our liability waiver before purchase\u003c\/a\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1356\/0921\/files\/Level_7_Motorsports_LLC_Liability_Waiver_RELEASE_OF_LIABILITY.pdf?16751810778467196783\" title=\"Level 7 Liability Waiver\" target=\"_blank\"\u003e,\u003c\/a\u003e click to see PDF.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481927880800,"sku":"LEVOBSCM","price":525.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/28156_obscabmounts1_1024x1024_0bdb7508-75e5-4857-964f-8386b9fd3ceb.webp?v=1768578910"},{"product_id":"88-98-c1500-rear-flip-kit","title":"88-98 C1500 Rear Flip Kit","description":"\u003cp\u003eDesigned as a one-piece unit for maximum strength, this 6-inch flip kit for OBS C1500 trucks is built from durable 1\/4-inch steel plate. It provides a reliable, heavy-duty solution for lowering your truck while maintaining structural integrity and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4 Steel\u003c\/li\u003e\n\u003cli\u003e6″ Drop\u003c\/li\u003e\n\u003cli\u003eOffset Mounting Hole to Center Wheels in Opening After Lowering\u003c\/li\u003e\n\u003cli\u003eAllows use of Factory Length Driveshaft\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 10-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeft \u0026amp; Right Brackets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88-98 C1500 Trucks\u003c\/li\u003e\n\u003cli\u003e3″ Axle Tube\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Yes","offer_id":42481927979104,"sku":"13-9007U","price":160.0,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":42481928011872,"sku":"13-9007","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/517_tinworks-fabrication-iowa-classic-chevy-parts-custom-shop-37.jpg?v=1781810400"},{"product_id":"88-98-frame-stiffener","title":"88-98 Frame Stiffener","description":"\u003cp\u003e\u003c!--themify_builder_static--\u003e\u003c!--\/themify_builder_static--\u003e\u003c\/p\u003e\n\u003cp data-start=\"196\" data-end=\"484\"\u003eUpgrade your OBS truck’s chassis strength and handling with our premium frame stiffener. Engineered with precision-fit boxing plates, this 100% bolt-in kit reinforces your factory frame to reduce flex and improve overall rigidity—delivering a smoother, more responsive driving experience.\u003c\/p\u003e\n\u003cp data-start=\"486\" data-end=\"1051\"\u003eThis frame stiffener installs easily with no welding, using existing factory holes to locate components for a true bolt-in upgrade. The heavy-duty steel boxing plates are designed to strengthen key areas of the frame, helping to prevent twisting and flexing under load or during aggressive driving. The added rigidity improves cornering, braking, and overall vehicle control, whether you’re daily driving, or pushing your truck on the road or track. Built from high-grade steel, this system is made to last and deliver consistent performance over time.\u003c\/p\u003e\n\u003cp data-start=\"1053\" data-end=\"1140\"\u003eThe ultimate solution to improve strength, stability, and handling in your OBS chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: The factory fuel tank will need to be relocated to the rear of the truck.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\/16 Steel Construction\u003c\/li\u003e\n\u003cli\u003eUses Factory Holes to Locate\u003c\/li\u003e\n\u003cli\u003eAdjustable Transmission Mount\u003c\/li\u003e\n\u003cli\u003eBoxes Your Frame Rails\u003c\/li\u003e\n\u003cli\u003eAbility to Run up to 3 1\/2″ Exhaust\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTransmission Crossmember \u0026amp; GM Polyurethane Mount\u003c\/li\u003e\n\u003cli\u003eGrade 8 Hardware\u003c\/li\u003e\n\u003cli\u003eBoxing Plates\u003c\/li\u003e\n\u003cli\u003eFrame Stiffener\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2WD 88-98 Chevy\/GMC\u003c\/li\u003e\n\u003cli\u003eShort Bed Trucks\u003c\/li\u003e\n\u003cli\u003eGM Transmissions (T400, 700R4, 4L60, 4L80, 6L80, T-56, Tko500\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(255, 42, 0);\"\u003e\u003cstrong\u003e3 - 4 Week Lead Times Typical\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/8898-OBS-SBFS-Installation-Instructions.pdf?v=1771533448\" rel=\"noopener\" target=\"_blank\"\u003e8898-OBS-SBFS Installation Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Tinworks Suspension","offers":[{"title":"Yes","offer_id":42985811574880,"sku":"13-9022","price":1925.0,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":42985811607648,"sku":"13-9012","price":1600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/ChatGPT_Image_Jul_10_2026_11_55_59_AM.png?v=1783705199"},{"product_id":"88-98-c3500-frame-notch","title":"88-98 C3500 Frame Notch","description":"\u003cp\u003eMade in the USA, this heavy-duty frame notch offers a tight, precise fit for C3500 trucks. Built strong to maintain frame integrity while allowing for lowered suspension setups, it’s the perfect upgrade for durability and performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4″ Steel Construction\u003c\/li\u003e\n\u003cli\u003eAllows for a 8″ Rear Drop\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 32-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeft \u0026amp; Right Frame Notch\u003c\/li\u003e\n\u003cli\u003e1\/2″ Grade 8 Hardware\u003c\/li\u003e\n\u003cli\u003ePolyurethane Bump Stops\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88-98 C3500 Chevy Truck\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481928175712,"sku":"13-9009","price":245.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/TW_Product_8.2.jpg?v=1776951797"},{"product_id":"battery-box","title":"Battery Box","description":"\u003cp\u003eDesigned to fit standard Group 34\/78 batteries, this universal mount battery box offers a clean and secure installation. Compatible with a readily available battery size, it’s perfect for custom builds or replacements where space and reliability matter. Durable construction ensures long-lasting performance in any setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompletely Encapsulated Design\u003c\/li\u003e\n\u003cli\u003eMount In Any Direction\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGrade 8 Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGroup 34\/78 Batteries (10 x 6 5\/8 wide \u0026amp; 7 1\/8 tall)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481928208480,"sku":"6-9003","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/28180_tw-battery-box-5-1-scaled.jpg?v=1768578911"},{"product_id":"83-98-rear-shock-extender","title":"83-98 Rear Shock Extender","description":"\u003cp\u003eRear shock relocators drop your shock mounting point 3 1\/2 inches, improving ride quality and performance on lowered trucks. They correct the shock angle for better suspension travel and overall handling, making them an essential upgrade for a smoother, more controlled ride.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\/16 Inch Steel Construction\u003c\/li\u003e\n\u003cli\u003eUses Existing Holes to Mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShock Extenders [Pair]\u003c\/li\u003e\n\u003cli\u003eGrade 8 Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1983 – 1998 1\/2 Ton Trucks\u003c\/li\u003e\n\u003cli\u003eC10\/ C1500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481928405088,"sku":"12-9025","price":85.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/19919_tw-product-photo-3-1-scaled.jpg?v=1768578912"},{"product_id":"88-98-c3500-rear-lower-kit-8-drop","title":"88-98 C3500 Rear Lower Kit 8\" Drop","description":"\u003cp\u003eBuilt for strength and precision, this heavy-duty frame notch is designed specifically for OBS C3500 trucks. It allows for up to 8 inches of rear drop while maintaining frame integrity and ride quality. Perfect for serious lowering setups without compromising durability or performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1\/4″ Steel Construction\u003c\/li\u003e\n\u003cli\u003eAllows for a 8″ Rear Drop\u003c\/li\u003e\n\u003cli\u003eMoves Axle Towards Rear to Center Wheels and Retain Factory Driveshaft\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 48-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeft \u0026amp; Right Frame Notch\u003c\/li\u003e\n\u003cli\u003e8″ Flip Kit\u003c\/li\u003e\n\u003cli\u003e1\/2″ Grade 8 Hardware\u003c\/li\u003e\n\u003cli\u003ePolyurethane Bump Stops\u003c\/li\u003e\n\u003cli\u003eNew U bolts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88-98 C3500 Chevy Truck\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Yes","offer_id":42481928437856,"sku":"13-9011U","price":385.0,"currency_code":"USD","in_stock":true},{"title":"No","offer_id":42481928470624,"sku":"13-9011","price":320.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/527_tinworks-fabrication-iowa-chevy-truck-fabricator-chevy-silverado-flip-notch-kit-1.jpg?v=1781810302"},{"product_id":"88-98-c1500-c-notch","title":"88-98 C1500 C Notch","description":"\u003cp\u003eEngineered for strength and a clean fit, this heavy-duty frame notch allows up to 6 inches of rear drop on your C1500. Made in the USA from high-quality materials, it’s the perfect solution for safely lowering your truck without sacrificing structural integrity.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e3\/16″ Steel Construction\u003c\/li\u003e\n\u003cli\u003eAllows for a 6″ Rear Drop\u003c\/li\u003e\n\u003cli\u003eBolt in Design\u003c\/li\u003e\n\u003cli\u003eTotal Product Weight 20-lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLeft \u0026amp; Right Frame Notch\u003c\/li\u003e\n\u003cli\u003e1\/2″ Grade 8 Hardware\u003c\/li\u003e\n\u003cli\u003ePolyurethane Bump Stops\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e88-98 C1500 Chevy Truck OBS\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42481928831072,"sku":"13-9006","price":185.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/534_tinworks-fabrication-iowa-chevy-truck-fabricator-c1500-obs-c-notch-1.jpg?v=1781809649"},{"product_id":"level-7-motorsports-88-98-chevy-gmc-c1500-brake-master-adapter-obs","title":"Level 7 Motorsports 88-98 Chevy \/ GMC C1500 Brake Master Adapter (OBS)","description":"\u003cp\u003eLevel 7 Motorsports has developed a bolt in solution for a manual brake master cylinder for the 1988-98 OBS chevy trucks.  This kit moves the master cylinder down, inline of the pedal push rod with zero modification to your firewall.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003cli\u003eComes with hardware stainless hardware\u003c\/li\u003e\n\u003cli\u003eMachined from Billet T6061 Aluminum\u003c\/li\u003e\n\u003cli\u003eAnodized black\u003c\/li\u003e\n\u003cli\u003ePlease email us for help determining what bore size of Wilwood master cylinder to use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlease click the link below to find our OBS Chevy master cylinder kit.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/shop.levelsevenmotorsports.com\/products\/wilwood-manual-brake-master-cylinder-kit-for-obs-ck1500-trucks\" title=\"Wilwood Manual Brake Master Cylinder Kit for OBS CK1500 Trucks (Manual Brakes)\"\u003e- Wilwood Manual Brake Master Cylinder Kit for OBS CK1500 Trucks (Manual Brakes)\u003c\/a\u003e\u003c\/p\u003e","brand":"Level 7 Motorsports","offers":[{"title":"Default Title","offer_id":42650750943328,"sku":"LEVOBSBMS","price":175.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/OBSFirewallspacer1.png?v=1773781583"},{"product_id":"pro-series-chassis-brake-plumbing-kit-88-98-chevy-gmc-c1500-obs","title":"Pro Series Chassis Brake Plumbing Kit, 88-98 Chevy \/ GMC C1500 OBS","description":"\u003cp\u003eLevel 7 Motorsports has developed this brake line kit specifically for the popular 1988-98 Chevy \/ GMC C1500 OBS Trucks.  Currently only available for Short Bed \/ Short Cab\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cem\u003eIMPORTANT: This kit is designed to work with Wilwood's combination proportioning valve. The prop valve can be used with the Stock (OEM) or Wilwood master cylinder.  If using with the stock master cylinder you will need to fabricate the short lines from the master to the prop valve. This kit can be used on your stock OBS frame only.\u003cbr\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe brake lines in this kit follow the similar factory routing, offers exceptional performance, and installs easily and quickly!\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003c\/span\u003e\u003cspan\u003eThe lines in this kit feature a PTFE inner lining that is compatible with all fluids and is wrapped in a braided stainless steel cover to resist abrasion and corrosion. Then they are covered with a special PVC coated material for maximum durability against debris and abrasion.  All Pro Series hoses use stainless steel hose ends for many years of corrosion resistance and durability.  The hoses are all DOT approved and are all crimped by the manufacturer.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIncluded in the kit are the hoses from the proportioning valve to the chassis, chassis bulkhead fittings and brackets, hoses for the front left and right that terminate at the factory front brake caliper hoses, and a rear hose in two parts that terminates on the factory frame hose bracket.  \u003cem\u003e\u003cspan style=\"color: #ff2a00;\"\u003eBrake calipers hoses and rear axle plumbing are not included.  \u003c\/span\u003e\u003c\/em\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eDOT approved hose kit to plumb your factory 1988-98 OBS chassis.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eInstalls easily and quickly!\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eCan use stock front and rear brake hoses.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003ePTFE Hoses, Stainless reinforced, and silicone coated.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eBlack in color\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eIncludes new whip hose bracket\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: rgb(0, 0, 0);\"\u003e_____________________________________________________________________________\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff2a00;\"\u003e\u003cspan style=\"color: #000000;\"\u003eInstallation Instructions:\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Power Brake Chassis Plumbing Kit Instructions\" href=\"https:\/\/levelsevenmotorsports.com\/wp-content\/uploads\/2026\/02\/Instructions-1988-98-C1500-Chassis-Brake-Plumbing-Kit-Power.pdf\" target=\"_blank\"\u003ePower Brake Plumbing Kit Instructions\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Manual Brake Chassis Plumbing Kit Instructions\" href=\"https:\/\/levelsevenmotorsports.com\/wp-content\/uploads\/2026\/02\/Instructions-1988-98-C1500-Chassis-Brake-Plumbing-Kit-Manual.pdf\" target=\"_blank\"\u003eManual Brake Chassis Plumbing Kit Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Level 7 Motorsports","offers":[{"title":"OBS - Power Brakes","offer_id":42650750877792,"sku":"PS-OBS-SBSC-1","price":825.0,"currency_code":"USD","in_stock":true},{"title":"OBS - Manual Brakes","offer_id":42650750910560,"sku":"PS-OBS-SBSC-2","price":795.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/powerOBSbrakekit.png?v=1773781582"},{"product_id":"88-98-nbs-master-cylinder","title":"88-98 NBS Master Cylinder","description":"\u003cp\u003eGreat budget friendly upgrade for the OBS trucks. Features a larger 1.34” bore master cylinder designed to support rear disc brake conversions and big brake kits on the 88-98 C1500 trucks. \u003c\/p\u003e","brand":"Tinworks Suspension","offers":[{"title":"Default Title","offer_id":42651263533152,"sku":"M630031","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/NBSMaster.webp?v=1773832864"},{"product_id":"88-00-little-shop-rear-big-brake-kit-16","title":"88-00 Little Shop Rear Big Brake Kit 16\"","description":"\u003cp\u003e\u003cspan\u003eA 16\" rear brake kit utilizing 6-piston calipers, LSMFG machined aluminum hats, and radial brackets which bolt directly to the factory axle without modification.\u003c\/span\u003e\u003cspan\u003e Includes drilled\/slotted rotors and an internal drum style parking brake assembly. Designed for 88-00 C1500 5-lug trucks\u003c\/span\u003e. \u003c\/p\u003e\n\u003cp\u003e(Rear calipers are the same body and look as the fronts, but with a smaller bore size for proper front\/rear bias)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE: Fits inside most 20\" wheels.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Little Shop Manufacturing","offers":[{"title":"Red \/ Yes","offer_id":42652883615840,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"Red \/ No","offer_id":42652883648608,"sku":null,"price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ Yes","offer_id":42652883681376,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"Black \/ No","offer_id":42652883714144,"sku":null,"price":2395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/littleshop1.jpg?v=1773937917"},{"product_id":"little-shop-front-big-brake-kit-16","title":"Little Shop Front Big Brake Kit 16\"","description":"","brand":"Tinworks Suspension","offers":[{"title":"OEM Type \/ Red \/ Yes","offer_id":42652885254240,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"OEM Type \/ Red \/ No","offer_id":42652885287008,"sku":null,"price":2395.0,"currency_code":"USD","in_stock":true},{"title":"OEM Type \/ Black \/ Yes","offer_id":42652885319776,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"OEM Type \/ Black \/ No","offer_id":42652885352544,"sku":null,"price":2395.0,"currency_code":"USD","in_stock":true},{"title":"Wilwood Iron Pro \/ Red \/ Yes","offer_id":42652887384160,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"Wilwood Iron Pro \/ Red \/ No","offer_id":42652887416928,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"Wilwood Iron Pro \/ Black \/ Yes","offer_id":42652887449696,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true},{"title":"Wilwood Iron Pro \/ Black \/ No","offer_id":42652887482464,"sku":null,"price":2475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/littleshop3.jpg?v=1773938373"},{"product_id":"88-98-mcgaughys-drop-spindles","title":"88-98 McGaughy's Drop Spindles","description":"\u003cp\u003eMcGaughy’s drop spindles lower your truck by 2.5 inches while enhancing handling without sacrificing factory ride quality. Designed to preserve proper suspension geometry, they help prevent the excessive wear on ball joints, shocks, and tires often caused by other lowering methods. Constructed from high-strength ductile iron, each spindle delivers durability and strength that meet or exceed original equipment standards.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUses Factory Style Ball Joints \u0026amp; Tie Rod Ends\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e2\" Of Drop\u003c\/li\u003e\n\u003cli\u003eChoose From Light Duty \u0026amp; Heavy Duty Brakes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSpindles [Pair]\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1988-1998 C10\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Tinworks Suspension","offers":[{"title":"Light Duty (1\" Thick)","offer_id":42659785408608,"sku":"33142","price":275.0,"currency_code":"USD","in_stock":true},{"title":"Heavy Duty (1.25\" Thick)","offer_id":42659785441376,"sku":"33141","price":275.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/33154-scaled.jpg?v=1774269675"},{"product_id":"73-98-replacement-u-bolts","title":"73-98 Replacement U-Bolts","description":"\u003cp\u003e\u003cspan\u003eThese are a set of 5\/8\" diameter U bolts for the 73-98 leaf spring trucks. U bolts should not be re used as they are designed to stretch and deform when torqued. We offer these in several different axle tube sizes and lengths. Sold as a set of 4. \u003c\/span\u003e\u003c\/p\u003e","brand":"Tinworks Suspension","offers":[{"title":"3\" x 7 1\/2\"","offer_id":42714516881504,"sku":"6-9004","price":65.0,"currency_code":"USD","in_stock":true},{"title":"3 1\/2\" x 10 1\/2\"","offer_id":42714516914272,"sku":"6-9005","price":65.0,"currency_code":"USD","in_stock":true},{"title":"4\" x 10 1\/2\"","offer_id":42714516947040,"sku":"6-9006","price":65.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/TWProduct7.3_2c46928e-f697-4c1c-b49c-9bbfedc7d01a.jpg?v=1776452029"},{"product_id":"88-98-frame-boxing-plates","title":"88-98 Frame Boxing Plates","description":"\u003cp data-end=\"426\" data-start=\"164\"\u003eStrengthen your chassis and reduce frame flex with these weld-in boxing plates designed specifically for 1988-1998 GM trucks. Cut from durable 10-gauge steel, these plates are built to reinforce your factory frame and improve overall structural rigidity. Perfect for performance builds, off-road use, towing, or high-horsepower applications, boxing your frame helps eliminate unwanted flex and provides a stronger foundation for suspension and drivetrain upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10ga Steel Construction\u003c\/li\u003e\n\u003cli\u003eCritical Bolt Access Areas Pre Cut \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOptional Flush Mount Access Doors Available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncludes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDriver \u0026amp; Passenger Sold Together In Pairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle Cab\u003c\/li\u003e\n\u003cli\u003e88-98 Chevy\/GMc\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/88-98_Frame_Boxing_Plate_Instuctions.pdf?v=1778784585\"\u003e88-98 Frame Boxing Plate Instructions\u003c\/a\u003e\u003c\/p\u003e","brand":"Tinworks Suspension","offers":[{"title":"Yes \/ Yes","offer_id":42772177649760,"sku":"13-9020, 13-9021","price":450.0,"currency_code":"USD","in_stock":true},{"title":"Yes \/ No","offer_id":42772177682528,"sku":"13-9020, 13-9022","price":225.0,"currency_code":"USD","in_stock":true},{"title":"No \/ Yes","offer_id":42772177715296,"sku":"13-9020, 13-9023","price":225.0,"currency_code":"USD","in_stock":true},{"title":"No \/ No","offer_id":42772177748064,"sku":"13-9020, 13-9024","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/TW_OBS_Boxing_Combo.jpg?v=1776952501"},{"product_id":"88-98-obs-cab-mounts","title":"88-98 OBS Cab Mounts","description":"\u003cp\u003e\u003cspan\u003eThese billet aluminum cab mounts are a factory replacement for your 1988-1998 Chevy pick up.  \u003c\/span\u003e\u003cspan\u003eThe mounts are machined from T6061 aluminum and feature stainless steel hardware.  The aluminum mount sits directly on top of the frame just as the original mount.  One stainless washer sits on top of the aluminum mount and will keep the body from digging into the aluminum.  One large 1\/4” thick washer goes onto the bolt and passed up through the frame bracket.  There are no other lower parts to these mounts.  \u003c\/span\u003e\u003cb\u003ePLEASE MAKE SURE THAT YOU USE PLENTY OF ANTISEIZE!!\u003c\/b\u003e\u003cspan\u003e  If you do not, the stainless bolt will seize on the nut and you will have to cut the bolt off!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eDisclaimer:\u003c\/strong\u003e  These cab mounts will solid mount the cab to the chassis.  If you do not box or reinforce your chassis there could be long term damage to the cab mount supports.  That being said, confirm that your cab floor, cab support rails, and inner rockers are solid before installation.  Rest assured that if you have a boxed frame or aftermarket frame with a good cab, there is no danger.  We have had these cab mounts installed in our truck for 6 years of racing now with no issue.  There is also no noticeable increase to NVH with these cab mounts.  Only if you have solid engine mounts or something contacting the frame will the resonance transmit into the cab.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIncrease chassis rigidity by using the cab as a superstructure.\u003c\/li\u003e\n\u003cli\u003eProvide a solid platform for a rollcage\u003c\/li\u003e\n\u003cli\u003eIn stock and ready to ship\u003c\/li\u003e\n\u003cli\u003eMade in the USA\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1356\/0921\/files\/Level_7_Motorsports_LLC_Liability_Waiver_RELEASE_OF_LIABILITY.pdf?16751810778467196783\" title=\"Level 7 Liability Waiver\" data-mce-href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1356\/0921\/files\/Level_7_Motorsports_LLC_Liability_Waiver_RELEASE_OF_LIABILITY.pdf?16751810778467196783\" target=\"_blank\"\u003ePlease read our liability waiver before purchase,\u003c\/a\u003e click to see PDF. \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Level 7 Motorsports","offers":[{"title":"Default Title","offer_id":42746101104736,"sku":"LEVOBSCM","price":525.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/files\/OBScabmount3.jpg?v=1778522170"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0660\/6104\/1760\/collections\/88-98_Truck_Icon_eca9b803-34e1-4a22-869c-94e7cee677b1.png?v=1768843629","url":"https:\/\/twsuspension.com\/collections\/88-98.oembed?page=2","provider":"Tinworks Suspension","version":"1.0","type":"link"}