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Drivetrain› Belt and Chain Drive

RK Racing

RK Chain GB520MXU-84L UW-Ring - Gold

$149.15 $134.24 Save $14.91

SKU: R05K GB520MXU-84

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

Advanced — 4+ hours

Description

The RK Chain 520 MXU series is a sealed O-ring motocross chain designed for off-road applications. It features RK's new UW-sealing rings for increased chain life and consistent power delivery. The chain has a bright gold plated finish and is rated for applications up to 500cc.

Constructed with heat-treated hi-carbon steel components, this chain has a maximum tensile strength of 9,000 foot pounds and weighs 3.0 lbs per 100 links. It includes one matching clip-style master link.

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 GB520MXU-84

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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