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

The Manley upgraded 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 245 lbs./in valve spring set (Part# 22180-16) with their matching titanium retainers (Part# 23180-16). 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 WireOuter Diameter: 1.050"Inner Diameter: .755"Pressures: 60 @ 1.420" / 151 @ 1.050" / 187 @.895"Stock Net Lift: .370"Maximum Net Lift: .525"Coil Bind: .845"Rate lbs./in: 245Quantity: 16Retainer Specs:Weight: 6 GramsValve Stem Diameter: 6.0mmValve Lock Degree: 6 DegreesDimensions: A= 1.050" / B=.745" / C= .515" / Step= .100"