PROX Cam Chain built to OEM specifications for dependable valve timing and long service life. Manufactured in Japan by BorgWarner with an M-type chain design for maximum durability.
PROX Cam Chain (Vendor Part Number: 31.4351) is a high-quality timing chain engineered to meet OEM specifications for precise, reliable valvetrain operation. Manufactured in Japan by BorgWarner, it’s designed for riders and builders who want consistent cam timing, reduced risk of premature stretch, and dependable durability under real engine loads.
If you’re refreshing a worn valvetrain or carrying out an engine service, a strong, accurately made cam chain helps keep timing stable and can prevent the performance loss and noise that comes with an aging chain. This PROX replacement focuses on long-term wear resistance and secure pin-to-link connection for confidence mile after mile (or hour after hour).
