The set consists of 24 big and 24 small springs with 24 retainers and 24 locators 

13g retainers

springs are 50 % stronger than the orginal conical springs

Perfect for turbo set ups and high revving engines working rpm can be safely lifted up to 8500 RPMs ,

the set adds margin of safety against over-revving from mis downshift or upshift

They are designed for maximum realibity and can be used with both mild and aggressive camshafts

Installed height pressure - 32kg +(50%)

9mm lift pressure - 82kg (+55%)

max lift 14mm

Recommend for stock valves

suitable for :

All the M52 and m54 engines and M50 single vanus engines

Shipping is with dhl and package arrives from 1 to 3 working days