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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
6" diameter for ProMod covers
S58 Inline-6
Installation guide
5 mm bore size for 3500 cc displacement
BMW M20 Pro-Xtreme Valve Spring Kit E28 M5 6" diameter for ProMod covers5150 AutoSport Pro Xtreme Valve Springs for BMW M20 engines: M20B20, M20B23, M20B25, and M20B27. Maximize your engines potential with 5150 AutoSport Pro Xtreme Valve Springs, designed for BMW M20B23, M20B25, and M20B27 engines. Whether you're building for high revving street performance or all out racing, these valve springs are built to handle engine speeds of up to 11,000 RPM with confidence. Designed for Peak RPM Performance Perfect for high lift
US$ 54.00
US$ 110.00
US$ 120.00
