{"product_id":"btr-sk427-spring-kit-solid-roller-lsx-sk427-560","title":"BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427\/560","description":"BTR SK427 SPRING KIT - SOLID ROLLER LSx - SK427\/560 When you take the plunge into a solid roller combination, taking the guesswork out of the valvetrain combination is a huge relief. For that reason, BTR is proud to introduce the SK427 valve spring kit. Parts included: (16) SR532 titanium retainers (16) PSI-DR427R ML valve springs (16) VS LS valve seals (32) VLM8-8MM-1 valve locks (16) SLS138-1 locators (bronze guides) Spring specs: Type: Dual Spring OD: 1.300″ Inner ID: .628″ Seat: 230 lbs @ 1.850″ Open: 715 lbs @ 1.100″ Recommended Lift: .750″ NOTE: Please check valve guide clearance if you exceed .650 - .660 lift.","brand":"Brian Tooley Racing","offers":[{"title":"Default Title","offer_id":61757065199986,"sku":"SK427\/560","price":599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/6643\/7490\/files\/hyper-motive-image-coming-soon_c12ffbd5-5c73-4fdc-9aae-d7ee1a65f5ec.png?v=1775963117","url":"https:\/\/hypermotive.com\/products\/btr-sk427-spring-kit-solid-roller-lsx-sk427-560","provider":"Hypermotive Performance","version":"1.0","type":"link"}