High 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 & 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.
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