The RK 420 MXZ Heavy-Duty Drive Chain is engineered for professional-level off-road and motocross racing applications. Designed for motorcycles with 80cc to 150cc engines in open-class racing, this 126-link chain delivers dependable power transfer and durable performance under demanding riding conditions. Its chromoly steel construction provides increased strength and resistance to wear, making it a reliable choice for race bikes and other high-performance applications.
Seamless rollers and bushings support smooth operation while helping reduce friction throughout the drivetrain. Oversized alloy pins add strength to the chain assembly, supporting durability during aggressive acceleration, jumps, and repeated racing loads. The included clip-style connecting link simplifies installation and makes chain service more convenient when properly fitted and secured.
Manufactured by RK and supplied under vendor part number 420MXZ-126, this size 420 drive chain is intended for compatible motorcycles requiring a 126-link configuration. Always verify the motorcycle manufacturer’s fitment requirements, chain size, sprocket compatibility, and final chain length before installation. Proper adjustment, lubrication, and maintenance are recommended to help maximize service life and maintain consistent drivetrain performance.
Features:
- Construction: Chromoly steel construction provides strength and durability for demanding racing use.
- Rollers and Bushings: Seamless rollers and bushings support smooth drivetrain operation and reduced friction.
- Pins: Oversized alloy pins add strength to the chain assembly under high-load conditions.
- Application: Designed for professional-level racing motorcycles from 80cc to 150cc in open-class competition.
- Configuration: 126-link size 420 chain for compatible motorcycle drivetrain applications.
- Connecting Link: Includes a clip-style connecting link for convenient installation and service.
- Brand: RK
- Manufacturer Part Number: 420MXZ-126
- Vendor Part Number: 420MXZ-126