Description:
STP Performance Parts - Racing Dual Valve Spring Kit for BMW M20 (12v)
Complete kit includes:
12 × Inner Valve Springs
12 × Outer Valve Springs
12 × 6 mm Chromoly Steel Retainers (included)
Specifications:
Seat Pressure: 80 lbs @ 35.70 mm installed height
Open Pressure: 220 lbs @ 12 mm lift
Max Safe RPM: 8000+ (with correct geometry)
Full high-RPM upgrade for all BMW M20 engines (M20B20, B23, B25, B27). Ideal for aggressive cam profiles, stroked builds, and race applications requiring reliable valve control at sustained high revs. Direct drop-in fitment.
