and other models

Supertech valve springs excel in durability and performance

effectively eliminating valve float and ensuring optimal power delivery at high engine speeds

Dual Springs expand pressure range while maintaining a low profile and reduced weight

5150 AutoSport High Performance Main Bearing Set, BMW S58 E85 and other modelsDesigned specifically for high performance engine builds, the 5150 High Performance Coated Main Bearing Set for BMW S58 engines offers exceptional reliability and durability. Each bearing is treated and coated by Calico, significantly reducing friction and enhancing engine efficiency. This advanced coating technology allows the engine to generate more power while resisting "spinning" under extreme conditions, making it an ideal choice for racing and