{"product_id":"ast-linear-race-springs-140mm-length-x-100-n-mm-rate-x-61mm-id-single","title":"AST Linear Race Springs - 140mm Length x 100 N\/mm Rate x 61mm ID - Single","description":"\u003cp\u003e\u003cstrong\u003eSKU:\u003c\/strong\u003e \u003cspan itemprop=\"sku\"\u003eAST-140-100-61\u003c\/span\u003e | \u003cstrong\u003eUPC:\u003c\/strong\u003e astAST-140-100-61\u003c\/p\u003e\n\n\u003ch4\u003e\u003cstrong\u003eAST Linear Race Springs - 140mm Length x 100 N\/mm Rate x 61mm ID - Single\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eAST Linear Race Springs feature 140mm free length, 100 N\/mm spring rate, and 61mm inner diameter in a single unit for precise coilover setups. These springs suit performance vehicles with compatible suspension systems, offering linear response for sharp handling and track stability. Built for demanding race conditions, they maintain shape under load.\u003c\/p\u003e\n\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e140mm Free Length:\u003c\/strong\u003e Allows exact ride height adjustment in coilover assemblies for balanced street and track performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100 N\/mm Linear Rate:\u003c\/strong\u003e Provides steady force progression for predictable chassis control during high-speed corners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e61mm Inner Diameter:\u003c\/strong\u003e Matches common coilover perches for direct fit in AST and similar systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChrome Silicon Steel Construction:\u003c\/strong\u003e High-tensile material resists fatigue and corrosion in extreme racing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShot Peened and Preset:\u003c\/strong\u003e Enhances longevity by reducing stress points and preventing sag over thousands of cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eProduct Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSold as single spring for custom setups or replacements.\u003c\/li\u003e\n\u003cli\u003eGreen powder coat finish identifies rate and prevents rust.\u003c\/li\u003e\n\u003cli\u003eSpecial order item verify stock before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended.\u003c\/li\u003e\n\u003cli\u003eConfirm coilover perch inner diameter is 61mm before install.\u003c\/li\u003e\n\u003cli\u003ePair with matching spring seats and rubbers for secure mounting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eThis Part Fits\u003c\/h4\u003e\n\u003ctable border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eUniversal\u003c\/td\u003e\n\u003ctd\u003eVarious\u003c\/td\u003e\n\u003ctd\u003eCoilover Equipped\u003c\/td\u003e\n\u003ctd\u003e61mm ID Perch Systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2005-2012\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e987 Boxster\u003c\/td\u003e\n\u003ctd\u003eCayman S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2009-2016\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e997 Carrera\u003c\/td\u003e\n\u003ctd\u003eGT3 RS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2013-2016\u003c\/td\u003e\n\u003ctd\u003ePorsche\u003c\/td\u003e\n\u003ctd\u003e981 Cayman\u003c\/td\u003e\n\u003ctd\u003eS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2008-2013\u003c\/td\u003e\n\u003ctd\u003eBMW\u003c\/td\u003e\n\u003ctd\u003eE90 M3\u003c\/td\u003e\n\u003ctd\u003eAll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch4\u003eWhy Choose AST?\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eDeveloped for professional motorsport teams worldwide.\u003c\/li\u003e\n\u003cli\u003ePrecision manufacturing ensures consistent load handling.\u003c\/li\u003e\n\u003cli\u003eEuropean engineering meets FIA and track standards.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e Will this spring fit my coilover kit?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Fits systems with 61mm ID perches like AST DP and SS series verify your perch specs for compatibility.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What material and finish does it have?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e Made from heat-treated chrome silicon steel shot peened preset and green powder coated for identification and protection.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ:\u003c\/strong\u003e What is the warranty coverage?\u003cbr\u003e\n      \u003cstrong\u003eA:\u003c\/strong\u003e AST provides warranty against defects in materials and workmanship when installed correctly contact support for details.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eShipping \u0026amp; Handling\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMethod:\u003c\/strong\u003e UPS Ground or FedEx\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e In stock - ships same or next business day\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging:\u003c\/strong\u003e Protective cardboard box 6 x 6 x 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.2 lbs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AST","offers":[{"title":"Default Title","offer_id":42056972828751,"sku":"ASTAST-140-100-61","price":85.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/ast-linear-race-springs-140mm-length-x-100-nmm-rate-x-61mm-id-single-ast.jpg?v=1771569850","url":"https:\/\/www.blackopsautoworks.com\/products\/ast-linear-race-springs-140mm-length-x-100-n-mm-rate-x-61mm-id-single","provider":"Black Ops Auto Works","version":"1.0","type":"link"}