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Exterior Components› Body Panels and Components

RK Racing

RK Chain GB420MXZ4-110L - Gold

$72.36 $65.12 Save $7.24

SKU: R05K GB420MXZ4-110

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

Advanced — 4+ hours

Description

The RK Racing GB420MXZ4-110 is a 420 MXZ4 series racing chain designed for Supercross and Motocross applications. It features chromoly steel construction with seamless rollers and bushings, and oversized alloy pins for enhanced strength and wear resistance. The chain utilizes RK's exclusive HIT (Heat Induction Transfer) process for component heat treatment.

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 GB420MXZ4-110

Videos

RK Chain Tool UCT2100(50) Instructions with Team Rockstar Energy Husqvarna Factory Racing.

RK Chain Tool UCT2100(50) Instructions with Team Rockstar Energy Husqvarna Factory Racing.
D.I.D Racing Chain Selection

D.I.D Racing Chain Selection
RK/Driven Racing Chain and Sprocket Kit Install from Sportbiketrackgear.com

RK/Driven Racing Chain and Sprocket Kit Install from Sportbiketrackgear.com

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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