
EK/PBR 420SH Chain Kit 13/51 - Standard Sprocket
Complete kit designed for power transfer on off-road motorcycles: EK 420SH chain (sealed chain without O-Ring) paired with a front sprocket and rear sprocket made of PBR steel. Gear ratio 13/51 (13-tooth sprocket / 51-tooth sprocket) ready to install for a reliable drivetrain on your motocross and enduro outings.
Compatibility examples: Kawasaki KX 85 Big Wheels (listed models). Before installation, check the compatibility of dimensions and final ratio with your machine to maintain the balance between acceleration and top speed.