Precise forging process leads to a stiff chain for better acceleration and more efficient engine work Lightening hole allows for a lighter chain without compromising strength while removing mud and dispersing heat more efficiently Improvement in transmission efficiency Special pins with holes in both ends allow the chain to be lightened Edge-cut inner plate reduces friction and allows for smooth engagement with sprocket Non-sealed to reduce as much friction as possible Chromium Carbide pin surface coating increases hardness and reduces chain wear For use with 125cc-500cc motocross bikes. CHAIN 3D 520MXR X 120 GLD
