BM-S14>-65669S - 4 cyl BMW M3 - S14/B23 S14/B25 Pro-H 3/8

Made from a premium Superclean Chrome Silicon Vanadium Steel alloy

every component matters

BMW 6 Series

Carrillo connecting rods are a top choice for racers who demand the best performance and reliability from their engines

BMW S14 Valve Springs by SuperTech Seat Pressure:92 lbs BM-S14>-65669S - 4 cyl BMWEnhance your BMW's performance with Supertech high performance valve spring kits, meticulously engineered for BMW S14B20, S14B23, S14B25, and S14B27 engines. Designed specifically for the demands of high performance applications, these valve springs deliver unmatched valve control and reliability, essential for any serious engine build. Each kit includes high quality valve springs and all necessary components for seamless installation. Crafted from