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Exterior Components› Body Panels and Components

RK Racing

RK Chain GB420MXZ-104L - Gold

$54.18 $48.76 Save $5.42

SKU: R05K GB420MXZ-104

Special Order
Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The RK Racing GB420MXZ is a heavy-duty drive chain designed for motocross racing. It features chromoly steel construction with heat-treated components for high-performance durability and resistance to stretch. This non-sealed chain has a tensile strength of 5,000 and a wear life index of 300.

It is suitable for engines up to 125cc and includes a gold clip-type master link. The chain comes pre-stressed and pre-stretched for fewer adjustments and includes 124 links.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

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

BrandRK Racing
Part NumberR05K GB420MXZ-104

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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