{"product_id":"ferrea-subaru-ej20-317lbs-rate-inch-dual-valve-spring-set-of-16","title":"Ferrea Dual Valve Spring 75lbs - 02-05 WRX EJ20 - Set of 16 - S10071","description":"\u003cp\u003eThe design and processes on these dual valve springs are optimized to reduce valvetrain harmonics and provide greater stability on high horsepower applications. We use high grade premium super-clean PAC alloy materials and maintain tight tolerances for those unique aftermarket cylinder heads.\u003c\/p\u003e\n\u003cp\u003eType\/Material\/Application: Dual Spring - Special Alloy - Turbo - Drag Racing\u003cbr\u003eOutside Diameter: 20.8 mm\/28 mm\u003cbr\u003eInside Diameter: 15.88 mm\/20.8 mm\u003cbr\u003eSeat Pressure: 75 lbs @ 39.4 mm\u003cbr\u003eOpen Pressure: 200 lbs @ 29.4 mm\u003cbr\u003eRate Inch: 317 lbs\u003cbr\u003eCoil Bind: 21.5 mm\u003cbr\u003eMax Net Lift: 15 mm\u003cbr\u003eThis Spring requires Ferrea Titanium Retainer # E11043 and Ferrea Spring Seat Locator # SL1034 (Discard OEM Spring Seat Locator)\u003c\/p\u003e\n\u003cp\u003eFitment:\u003cbr\u003e2002:Subaru:Impreza:WRX, \u003cbr\u003e2003:Subaru:Impreza:WRX, \u003cbr\u003e2004:Subaru:Impreza:WRX, \u003cbr\u003e2005:Subaru:Impreza:WRX, \u003c\/p\u003e","brand":"Ferrea","offers":[{"title":"Default Title","offer_id":49998629142808,"sku":"FERS10071","price":485.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0259\/7856\/8790\/files\/60fdb8afc2bfdcd94d20de6df46b00d0_b88ed017-0ad5-499d-a54f-b212c3c49ac0.jpg?v=1745719463","url":"https:\/\/nipponpower.com\/products\/ferrea-subaru-ej20-317lbs-rate-inch-dual-valve-spring-set-of-16","provider":"Nippon Power","version":"1.0","type":"link"}