The RK 420 MXZ heavy-duty drive chain is designed for professional-level off-road motorcycle racing and high-performance applications. Manufactured by RK, this chain features chromoly steel construction, seamless rollers and bushings, and oversized alloy pins for increased strength and durability. The 120-link configuration provides dependable fitment for compatible motorcycle and racing applications requiring a 420-size chain.
Fitment: Ideal for professional-level 80cc to 150cc open-class racing motorcycles when matched to the manufacturer’s specified chain size and required link count. Always confirm sprocket compatibility, chain length, and application requirements before installation. The chain includes a clip-style connecting link for convenient installation and service.
RK part number 420MXZ-120 identifies this 420 MXZ series chain and its 120-link configuration. Its heavy-duty design helps support demanding racing conditions while providing reliable power transfer between the engine and rear wheel. Follow the motorcycle manufacturer’s installation and maintenance recommendations, including proper alignment, lubrication, and tension adjustment.
Features:
- Construction: Chromoly steel construction provides increased strength for demanding racing applications.
- Rollers and Bushings: Seamless rollers and bushings support smooth, consistent chain operation.
- Pins: Oversized alloy pins enhance durability under high-load conditions.
- Application: Designed for professional-level 80cc to 150cc open-class racing motorcycles.
- Configuration: 420-size chain with 120 links for compatible motorcycle applications.
- Connecting Link: Includes a clip-style connecting link for installation and service.