{"product_id":"1-275-od-x-450-lbs-in-valve-spring","title":"1.275\" OD x 450 lbs.\/in. Valve Spring","description":"The Trick Flow® by PAC Racing Dual Valve Springs are manufactured to Trick Flow's rigorous standards, utilizing CNC-coiled Pacaloy™ chrome-silicon steel for enhanced durability. These springs are double shot-peened to exceed Aerospace Material Specifications (AMS) reliability criteria.\n\nDesigned for aggressive camshaft profiles, these dual springs offer a 450 lbs.\/in. spring rate, 150 lbs. of seat pressure at an installed height of 1.800 inches, and 420 lbs. of open pressure. Key specifications include a 1.275-inch outside diameter, 1.080-inch coil bind height, and 1.200-inch open height. The springs are sold individually and are noted as a GM LS cylinder head upgrade spring.\n\nThis product is not coated and does not include retainers, damper springs, locks, or valve stem seals. Related parts, such as steel or titanium valve spring retainers and valve locks, are available separately.","brand":"Trick Flow","offers":[{"title":"Default Title","offer_id":52689427202360,"sku":"TFS-16306-1","price":10.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687749412.jpg?v=1784906522","url":"https:\/\/store.motormia.co\/products\/1-275-od-x-450-lbs-in-valve-spring","provider":"MOTORMIA","version":"1.0","type":"link"}