Professional Motocross Chain for MX/SX
RK 520MXZ5 applies the HCR Pin and special alloy steel for component making, resulting in a tensile strength as high as 35.6[kN] with weight as light as 13.7[g/L].
RK 520MXZ4 features special alloy pins with RK special
HCR Treatment (High Tech Chromium Carbide Layered Pins) which
drastically improves the wear resistance of the Pin while absorbing shock loads from extreme jumps.
420 & 428 Motocross Chain
RK 420MXZ & 428MXZ are a reinforced Heavy Duty Chain Designed for Off-road Usage. Lighter weight but stronger chain compare to Heavy Duty !
420 & 428 MXZ4 Chain
Better fatigue strength compare to 420MXZ & 428MXZ !

420MXZ NON-SEAL CHAIN
- Tensile Strength: 22.2kN
- Application: 50cc / 150cc
- Master Link Included: Clip type
- Weight: 0.78Kg/100L

420MXZ4 NON-SEAL CHAIN
- Tensile Strength: 22.2kN
- Application: 50cc / 150cc
- Master Link Included: Clip type
- Weight: 0.78Kg/100L

428MXZ1 NON-SEAL CHAIN
- Tensile Strength: 27kN
- Application: 50cc / 150cc
- Master Link Included: Clip type
- Weight: 1Kg/100L

428MXZ4 NON-SEAL CHAIN
- Tensile Strength: 28.5kN
- Application: 50cc / 150cc
- Master Link Included: Clip type
- Weight: 1Kg/100L

520MXZ5 NON-SEAL CHAIN
- Tensile Strength: 37.8kN
- Application: 125cc / 500cc
- Master Link Included: Clip type
- Weight: 1.39Kg/100L

Available in 420/420/428/428/520
Color Variation
(only for 520)

Main point
- For Serious Motocross riders
- HCR Pin
- lightest and strongest Motocross chain
- Use by top MXGP & MX2 teams