The RK Excel 420MXZ-126 MXZ Mini Racing Drive Chain is a heavy-duty chain engineered for mini motocross and supercross racing applications. Designed for off-road motorcycles using a 420 chain size, this 126-link drive chain provides dependable power transfer and durability for demanding race conditions. Its compact design is suited to mini MX and SX bikes with engines up to 150cc and output up to 30 horsepower.
Constructed from high-strength Chromoly steel, the RK Excel MXZ chain features seamless rollers and bushings for consistent operation and improved wear resistance. Oversized special-alloy pins add strength where the chain experiences significant loading, helping support reliable performance during acceleration, jumps, and repeated race use. The chain is supplied with a clip-type master link for installation and service convenience.
Verify motorcycle fitment, chain size, link count, and required chain width before installation. The RK Excel 420MXZ-126 is intended for compatible mini off-road racing motorcycles and should be installed and maintained according to the motorcycle and chain manufacturer recommendations. Regular inspection, lubrication, and proper adjustment can help maximize chain life and drivetrain performance.
Features:
- Size: 420 chain size with 126 links
- Model: MXZ Mini Racing
- Brand: RK Excel
- Manufacturer Part Number: 420MXZ-126
- Vendor Part Number: 691-10001
- Application: Mini motocross and supercross racing motorcycles
- Construction: High-strength Chromoly steel with seamless rollers and bushings
- Pin Design: Oversized special-alloy pins for added strength
- Tensile Strength: 4,980 pounds
- Maximum Engine Rating: Up to 150cc for off-road applications
- Maximum Output Rating: Up to 30 horsepower
- Master Link: Clip type included