The RK 428 MXZ/4 Heavy-Duty Chain is designed for serious motocross racing and demanding off-road applications. Manufactured by RK using high-performance materials and construction methods, this 120-link chain delivers dependable strength, durability, and power transfer under intense riding conditions. The 428 MXZ/4 model is engineered for riders who require a robust replacement chain for compatible motocross motorcycles and other applications using a 428 chain size.
Heat-treated components help improve resistance to wear and fatigue, while the chromoly steel construction provides a strong foundation for long-term performance. Seamless rollers and bushings promote smooth chain movement and consistent engagement with the sprockets. Oversized alloy pins add strength in high-load conditions, making the RK 428 MXZ/4 a suitable choice for racing, training, and aggressive off-road use.
Feature: 428 chain size for compatible motocross and off-road drivetrain applications.
Feature: 120-link configuration supports a range of compatible motorcycle fitments and may be trimmed when appropriate.
Feature: RK 428 MXZ/4 model engineered for high-performance motocross use.
Feature: Heat-treated components enhance durability under demanding riding conditions.
Feature: Chromoly steel construction provides strength and dependable service life.
Feature: Seamless rollers and bushings support smooth, consistent operation.
Feature: Oversized alloy pins provide added strength under heavy loads.
Feature: Includes a clip-style connecting link for installation.
Verify chain size, required link count, sprocket compatibility, and motorcycle manufacturer fitment specifications before installation. This RK chain is identified by manufacturer part number GB428MXZ4-120 and vendor part number GB428MXZ4-120.
Features:
- 428 chain size for compatible motocross and off-road drivetrain applications
- 120-link configuration for compatible motorcycle fitments
- RK 428 MXZ/4 model for high-performance motocross use
- Heat-treated components for improved durability
- Chromoly steel construction with seamless rollers and bushings
- Oversized alloy pins for added strength
- Includes a clip-style connecting link
- Manufacturer part number: GB428MXZ4-120
- Vendor part number: GB428MXZ4-120