Manley Pro Series Spring and Retainer Kits are matched sets perfect for your high revving Sport Compact.
Manley Performance valve springs are designed specifically to withstand the rigors of today's aftermarket Sport Compact camshafts and control the valve train properly in these high revving Sport Compact engine applications.
This means utilizing only the best, super clean chrome silicon high tensile strength steel alloy and performing classified heat treatment and shot peen processing to ensure ultimate fatigue life and limit load loss.
Manley titanium retainers are manufactured in the very best dual spindle CNC machines to exacting tolerances, rendering a superior jewel-like finish.
We use rugged and certified, heat treated aerospace grade titanium bar stock.
Retainer angles are held to within 6 (minutes) (this is a tenth of a degree) and installed heights are held to within .005!
Titanium retainers are a must for your high RPM Sport Compact engine.
Their lighter mass allows the tuner to turn higher engine speeds and still avoid dangerous valve float without sacrificing reliability.
