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5150 main and rod bearings with CT1 performance coating for exceptional wear resistance and oil film retention
and electronic devices such as ECUs and data acquisition systems
The Level 5 system is designed to handle high-stress environments
S58 Inline-6
BMW M20 Pro-Xtreme Valve Spring Kit E28 M5 5150 main and rod bearings5150 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
