Primary Belt to Chain Conversion Kit | 420 | RK MXU | Surron LBX eDirtyBike

Primary Belt to Chain Conversion Kit | 420 | RK MXU | Surron LBX

$99.00 USD
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Primary Belt to Chain Conversion Kit | 420 | RK MXU | Surron LBX eDirtyBike

Primary Belt to Chain Conversion Kit | 420 | RK MXU | Surron LBX

$99.00 USD
Product Details

DirtyBike Primary Drive System With RK 420 GB MXU Chain – The Best Sealed 420 Chain Available

Don’t risk your stock belt failing in the middle of a ride — install a DirtyBike primary chain drive system. With the world famous RK 420 GB MXU chain, this is a necessary upgrade for the serious off-road rider and maintains stock gear ratio.

RK GB 420 MXU Sealed chain is one of the strongest and quietest 420 chains available. Master link makes for easier installation and the chain can be replaced easily without removing the swing arm.

Kit comes with DirtyBike exclusive 1mm aluminum alignment shim allowing you to adjust the sprocket alignment for a quieter, longer lasting drive system.

Installation Video

Buyers and Maintenance Guide

Installation Tool

Recommendations

Recommend

Use

219H standard chain

On road and light off road with stock power

219H RK O-ring and non-O-ring kits

On road and off road up to 16Kw

420 with sealed x-ring

Off road over 16Kw

420 with non-O-ring chain

Racing only. Very Loud!

 

Care & Maintenance

To maintain the beauty and integrity of your purchase, we recommend treating it with care. Simple maintenance practices, such as gentle washing and proper storage, can effectively preserve the longevity of your favorites. We encourage you to refer to the care instructions included with each item, designed to help you keep your purchase in top condition.

Size & Fit

Our products are crafted to fit true to size, ensuring that you can confidently select your usual size with ease. Whether you’re looking for a relaxed or tailored fit, our designs are made to complement your unique shape and style.