RK 420 MXZ is a lightweight, race-ready 420 drive chain built for 80cc–150cc motocross and off-road use. Chromoly steel construction with seamless rollers/bushings and oversized alloy pins delivers strong, consistent power transfer.
The RK 420 MXZ Chain is designed for riders who need dependable power delivery and durability in competitive motocross. Built from chromoly steel and engineered with seamless rollers and bushings, it reduces friction and wear while keeping the drivetrain responsive—ideal for high-rev, smaller-displacement race bikes.
Whether you’re replacing a worn chain or building a reliable race setup, the MXZ Series construction with oversized alloy pins helps handle hard launches and aggressive riding. The included clip master link makes installation and trackside servicing quicker, so you can spend less time in the pits and more time riding.
