Kelford BMW B58/S58, EXTREME BEEHIVE SPRING, TI RETAINER & SEAT.

Kelford Cams High Energy B58 and S58 Valve Springs. B58 / S58 Engine – 3.0L inline 6.
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.
This kits matches our Stage 2 and 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.