{"product_id":"sp1-springs-and-retainers","title":"SP1 Springs and Retainers","description":"\u003cp\u003e\u003c\/p\u003e\u003ch2\u003eSP1 Springs and Retainers\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSP1 Springs and Retainers\u003c\/strong\u003e deliver precision, durability, and consistent performance for high-demand engines and racing applications. Engineered by SP1 for exact fitment and reliable valve control, these components help maximize RPM, reduce valve float, and extend valvetrain life.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePremium materials:\u003c\/strong\u003e Heat-treated alloy springs and hardened retainers for superior fatigue resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized design:\u003c\/strong\u003e Progressive and linear spring rates available to match your cam profile and application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReliable fitment:\u003c\/strong\u003e Manufactured to tight tolerances for repeatable installation and consistent valve seating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh RPM performance:\u003c\/strong\u003e Prevents coil-bind and valve float under extreme loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Ideal for racing, performance builds, and high-performance street engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEach SP1 kit is inspected for quality and balanced to provide smooth, predictable valvetrain behavior. Backed by SP1 engineering, these springs and retainers are a direct upgrade for enthusiasts and professional builders seeking proven results.\u003c\/p\u003e","brand":"SP1","offers":[{"title":"Shocks \u0026 Components \/ SU-08248RT","offer_id":52243921043774,"sku":"54-1102RT-51s","price":18.94,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08248SP","offer_id":52243921076542,"sku":"54-1102SP-51s","price":33.01,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08029SP","offer_id":52243921109310,"sku":"54-1143SP-51s","price":45.87,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08004RT","offer_id":52243921142078,"sku":"54-1147RT-51s","price":18.94,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08004SP","offer_id":52243921174846,"sku":"54-1147SP-51s","price":36.52,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08017RT","offer_id":52243921207614,"sku":"54-1157RT-51s","price":18.94,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08017SP","offer_id":52243921240382,"sku":"54-1157SP-51s","price":34.18,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08019SP","offer_id":52243921273150,"sku":"54-1158SP-51s","price":45.87,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08003RT","offer_id":52243921305918,"sku":"54-1162RT-51s","price":18.94,"currency_code":"USD","in_stock":false},{"title":"Shocks \u0026 Components \/ SU-08003S","offer_id":52243921338686,"sku":"54-1162S-51s","price":189.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/0373\/5614\/files\/e0fd-664bb0c55c43f.jpg?v=1758396062","url":"https:\/\/thed-zone.myshopify.com\/products\/sp1-springs-and-retainers","provider":"thed.zone","version":"1.0","type":"link"}