Exterior Components› Body Panels and Components
RK Racing
RK Chain 420MXZ-116L - Natural
SKU: R05K 420MXZ-116
Advanced — 4+ hours
Description
This chain is a lightweight racing option developed using the same technology as the 520MXZ4. It offers a high value-performance rating for motocross racing. The components are heat-treated for durability, and it features chromoly steel construction with seamless rollers and bushings, plus oversized alloy pins for added strength. It is rated for a maximum of 150cc/30HP and is intended for MX race use only.
Fitment
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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | RK Racing |
| Part Number | R05K 420MXZ-116 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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