Racing Double Springs
Swiss silicon chrome vanadium spring steel.
Heat treated and shot peened for high RPM.
Computer aided design for low stress levels with very low Harmonics with excellent structural memory
Set of 16
Fitted length 34mm
Inner spring fitted length should be 31.5mm with 2.5mm step
Seat Presure 85lbs
Maximum Valve lift 13.40mm
Machining the spring seat is required or we sell uprated valve spring tops that will give you a 34mm fitted length