RK 420 MXZ Heavy Duty Drive Chain is a strong, lightweight non-sealed 420 chain built for reliable power transfer on smaller off-road and street bikes up to 150 cc. Chromoly construction with reinforced pins helps reduce stretch and improve durability.
Main benefit: The RK 420 MXZ Heavy Duty Drive Chain is designed to deliver dependable drive performance for smaller-displacement bikes, where smooth power transfer and durability matter most. Its heavy-duty construction helps keep your drivetrain consistent under hard acceleration and frequent gear changes. With a clip master link included, installation and servicing are quick and practical.
If your current chain is stretching, wearing quickly, or causing inconsistent power delivery, upgrading to a heavy-duty 420 chain like the RK MXZ series helps restore crisp throttle response and reduces the need for constant readjustment. The non-sealed design also keeps weight down—ideal for bikes where efficiency and responsiveness are key.
