Cosworth YB Race Performance Double Valve Springs

Product Description

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