The RK 428 MXZ1 is a heavy-duty mini racing drive chain engineered for mini motocross and supercross applications. With 134 links and a natural finish, this chain is designed to provide dependable power transfer and durability in demanding racing environments. The 428-size chain is suitable for compatible mini MX and SX motorcycles requiring the RK MXZ1 specification.
Constructed from Chromoly steel, the RK 428 MXZ1 features seamless rollers and bushings to support smooth chain articulation and consistent operation. Oversized special-alloy pins provide added strength for high-load racing conditions, helping the chain withstand the repeated acceleration, impacts, and drivetrain stress associated with competitive off-road riding.
Before installation, verify that your motorcycle’s chain size, required link count, sprocket configuration, and manufacturer fitment specifications match this application. The RK 428 MXZ1 drive chain is supplied in a 134-link configuration and is identified by manufacturer part number 428MXZ1-134, also used as the vendor part number.
Features:
- Application: Designed for mini motocross and supercross racing motorcycles
- Chain Size: 428-size drive chain for compatible mini MX and SX applications
- Link Count: 134 links for fitment with matching sprocket and drivetrain configurations
- Construction: Heavy-duty Chromoly steel construction for demanding racing use
- Rollers and Bushings: Seamless design supports smooth operation and consistent articulation
- Pins: Oversized special-alloy pins provide added strength under high drivetrain loads
- Brand: RK
- Model: 428 MXZ1
- Manufacturer Part Number: 428MXZ1-134
- Vendor Part Number: 428MXZ1-134
- Finish: Natural