{"product_id":"swift-springs-standard-coilover-spring-barrel-type-id-3in-18in-length","title":"Swift Springs Standard Coilover Spring (Barrel Type) - ID: 3\" \/ Length: 18\"","description":"\u003cp\u003eSwift Springs Standard Coilover Springs (Barrel Type) in 3\" ID and 18\" length combine the anti-deflection barrel design with a long free length for maximum-travel suspension setups using 3\" ID coilover dampers. These 3\" ID Swift barrel coilover springs are manufactured in Japan from proprietary H5S.TW high-tensile alloy steel, eliminating spring bowing and ensuring consistent rates throughout the full stroke range.\u003c\/p\u003e\n\u003cp\u003eFor over 90 years, Swift Springs has led the industry in precision spring manufacturing. The barrel design is essential at longer spring lengths where deflection becomes more pronounced, preventing rate inconsistency and protecting the shock body from spring contact damage. Swift Springs coilover springs deliver increased traction, smoother weight transfer, and a more predictable driving experience for competitive racing applications.\u003c\/p\u003e\n\u003ch3\u003eWhy Racers Choose Swift Springs Coilover Springs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProprietary H5S.TW alloy delivers superior fatigue resistance and consistent spring rates\u003c\/li\u003e\n\u003cli\u003eBarrel design eliminates spring deflection and bowing at long lengths\u003c\/li\u003e\n\u003cli\u003eFewer coils reduce unsprung weight and maximize usable shock stroke\u003c\/li\u003e\n\u003cli\u003eQuicker transient response improves traction and road surface tracking\u003c\/li\u003e\n\u003cli\u003ePrecision-ground flat ends ensure even seating on the perch\u003c\/li\u003e\n\u003cli\u003eTrusted by professional racing teams worldwide — Swift Springs coilover springs are proven in competitive motorsport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Swift Coilover Springs are sold individually. Select your desired spring rate from the options above.\u003c\/p\u003e\n\u003ch5\u003eSpecifications\u003c\/h5\u003e\n\u003ctable class=\"table table-striped table-primary\"\u003e\n\u003ctbody\u003e\n\u003ctr class=\"spchd\"\u003e\n\u003ctd rowspan=\"2\" width=\"25%\"\u003e\u003cstrong\u003ePART #\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSPRING RATE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUSABLE STROKE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMAX STROKE\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eMAX LOAD\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"spchd\"\u003e\n\u003ctd\u003elbs\/inch\u003c\/td\u003e\n\u003ctd\u003einch\u003c\/td\u003e\n\u003ctd\u003einch\u003c\/td\u003e\n\u003ctd\u003elbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"spcrow\"\u003e\n\u003ctd class=\"spc\"\u003e180-300-300 B\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e300\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e9.9\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e11.3\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e3,402\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"spcrow\"\u003e\n\u003ctd class=\"spc\"\u003e180-300-350 B\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e350\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e9.5\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e11.1\u003c\/td\u003e\n\u003ctd class=\"spc\"\u003e3,886\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Swift Springs","offers":[{"title":"300","offer_id":44167806648380,"sku":"180-300-300 B","price":153.85,"currency_code":"USD","in_stock":true},{"title":"350","offer_id":44167806681148,"sku":"180-300-350 B","price":153.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0000\/2183\/files\/180-300-300B.jpg?v=1775244298","url":"https:\/\/www.springrates.com\/products\/swift-springs-standard-coilover-spring-barrel-type-id-3in-18in-length","provider":"SPRINGRATES®","version":"1.0","type":"link"}