{"product_id":"kvs58-btx-b58-s58-extreme","title":"KVS58-BTX | B58 \/ S58 Extreme","description":"\u003cp\u003e\u003cspan\u003eHigh Energy, Extreme Racing Valve Springs designed for BMW B58 \/ S58 3.0L inline 6 Engine. High performance, progressively wound PACALOY beehive valve spring with titanium retainers. This kit utilises a precision machined spring seat to max out the seat pressure for high boost, high horsepower builds. Specifically designed for Kelford Cams Stage 2 \u0026amp; Stage 3 Camshafts for engines making over 1000HP. 105lb seat pressure at 35mm installed height. 210lb at 10.8mm valve lift. Spring coil bind height at 23.6mm.\u003c\/span\u003e\u003c\/p\u003e","brand":"Kelford Cams","offers":[{"title":"Default Title","offer_id":51861074903407,"sku":"KEL KVS58-BTX","price":1044.61,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0401\/5308\/8154\/files\/BMW-B58-Extreme-Racing-Valve-Spring-Set.webp?v=1742883032","url":"https:\/\/www.speedfactoryracing.net\/en-ca\/products\/kvs58-btx-b58-s58-extreme","provider":"SpeedFactoryRacing","version":"1.0","type":"link"}