Manley Subaru WRX/STi .490in Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)

The Manley upgraded beehive valve spring and titanium retainer set is a great choice for Subaru EJ20 / EJ25 engines with upgraded camshafts that require valve springs for increased lift and higher RPM use. The set combines Manley's upgraded 310 lbs./in valve spring set (Part# 22185-16) with their matching titanium retainers (Part# 23185-16). The retainers are manufactured from heat treated aerospace grade titanium, then CNC machined to exacting tolerances for an excellent fit.

Valve Spring Specs:
Type: Single Conical Ovate Wire
Outer Diameter: 1.126"
Inner Diameter: .40"
Pressures: 95 @ 1.420" / 217 @ 1.050" / 264 @.910"
Stock Net Lift: .370"
Maximum Net Lift: .510"
Coil Bind: .860"
Rate lbs./in: 330
Quantity: 16

Retainer Specs:
Weight: 5 Grams
Valve Stem Diameter: 6.0mm
Valve Lock Degree: 6 Degrees
Dimensions: A= .875" / B=.627" / C= .465" / Step= .095"