{"product_id":"kt4014-ferrea-evo-x-dual-valve-spring-kit","title":"Ferrea Dual Valve Spring Kit for Evo X (KT4014)","description":"Ferrea dual valve spring kit for the 4B11 Evo X includes a full set of 16 dual springs, titanium retainers, seat locators and valve locks.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color: #ff2a00;\"\u003eVehicle Fitment:\u003c\/span\u003e\u003cbr\u003e2008-2015 Evolution X\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color: #ff2a00;\"\u003eIncludes:\u003c\/span\u003e\u003cbr\u003e(16) Dual Springs (S10018)\u003cbr\u003e(16) Titanium Retainers (E11089)\u003cbr\u003e(16) Seat Locators (SL1096)\u003cbr\u003e(16) Valve Locks (K10091)\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"color: #ff2a00;\"\u003eMore Info:\u003c\/span\u003e\u003cbr\u003eFerrea valve springs are heat-treated and stress relieved, which dramatically increases the spring's life. These provide the stability needed for high lift, high rpm racing engines, while minimizing the load loss for today's aggressive valvetrain combinations.\u003cbr\u003e\u003cbr\u003eHarmonics or high frequency fatigue is present in all racing engines and will usually destroy the valvetrain if not controlled. Properly designed valve springs will control the dominant harmonics, provide the needed stability, and reduce valvetrain component wear. Ferrea valve springs are developed from high strength alloys, including premium grade chrome silicon steel.\u003cbr\u003e\u003cbr\u003e\u003ca style=\"color: #ffffff;\" target=\"blank\" href=\"https:\/\/stmtuned.com\/collections\/ferrea-products\"\u003e\u003cbr\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan style=\"font-size: .8em;\"\u003e\nSee more Ferrea Products\u003c\/span\u003e\u003c\/div\u003e\u003c\/a\u003e","brand":"Ferrea","offers":[{"title":"Default Title","offer_id":50562862678358,"sku":"FER-KT4014","price":1090.35,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0817\/9531\/8102\/files\/KT4014-ferrea-evo-x-dual-valve-spring-kit-1.jpg?v=1749205760","url":"https:\/\/www.speed-addicts.com\/en\/products\/kt4014-ferrea-evo-x-dual-valve-spring-kit","provider":"Speed Addicts","version":"1.0","type":"link"}