The RK 428 MXZ1 is a heavy-duty mini racing drive chain designed for mini motocross and supercross applications. Built for demanding competition use, this 134-link chain combines Chromoly steel construction with seamless rollers and bushings to provide dependable strength and consistent operation. Its gold finish adds corrosion resistance and a distinctive appearance while supporting long-lasting performance when properly maintained.
Oversized special-alloy pins increase the chain’s strength and durability under the repeated shock loads encountered in racing. The RK 428 MXZ1 model is engineered for compatible mini MX and SX motorcycles using a 428 chain size. Verify the motorcycle manufacturer’s chain specification, sprocket compatibility, and required link count before installation. The chain may require adjustment or shortening to achieve the correct fit for a specific application.
For best results, install the RK 428 MXZ1-134 with properly matched 428 sprockets and follow the motorcycle manufacturer’s alignment and tension recommendations. Regular cleaning, lubrication, and inspection can help maintain smooth power transfer and extend service life. This RK drive chain is supplied with 134 links and is identified by manufacturer part number GB428MXZ1-134 and vendor part number GB428MXZ1-134.
Features:
- Size: 428
- Model: MXZ1
- Link Count: 134 links
- Finish: Gold
- Construction: Heavy-duty Chromoly steel
- Rollers and Bushings: Seamless design
- Pins: Oversized special-alloy pins for increased strength
- Application: Mini motocross and supercross racing
- Brand: RK
- Manufacturer Part Number: GB428MXZ1-134
- Vendor Part Number: GB428MXZ1-134
- Fitment: Compatible with mini MX and SX motorcycles requiring a 428 drive chain; confirm application and sprocket compatibility before installation