{"product_id":"mk5-supra-b58-extreme-racing-valve-springs","title":"MK5 Supra B58 Extreme Racing Valve Springs","description":"\u003cp data-mce-fragment=\"1\"\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.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThis 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. \u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e110lb seat pressure at 34.6mm installed height. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e210lb at 10.8mm valve lift. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eSpring coil bind height at 22.8mm.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kelford","offers":[{"title":"Default Title","offer_id":40418871672935,"sku":"","price":725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/1716\/6183\/files\/BMW-B58-Extreme-Racing-Valve-Springs.webp?v=1707531228","url":"https:\/\/www.rockfordspeed.com\/products\/mk5-supra-b58-extreme-racing-valve-springs","provider":"Rockford Speed","version":"1.0","type":"link"}