DirtyBike RK GB420MXU Primary Chain Drive Kit | Surron Light Bee, Segway X160/X260

Built For Riders Who Push Beyond The Limits Of The Stock Belt System

Stock primary belt systems work well for normal riding, but dust, sand, mud, and repeated hard use can eventually create belt slip and premature wear. For riders spending serious time on trails or running aggressive setups, a failed primary belt can leave you stuck far from the truck or trailhead.

The DirtyBike Industries RK GB420MXU Primary Chain Drive Kit replaces the factory belt system with a stronger and more dependable chain setup designed specifically for harsh riding environments. Built around the world-renowned RK GB420MXU sealed chain, this system delivers exceptional durability while retaining the factory gear ratio and ride feel.

Unlike many chain conversions, this setup was engineered with long-term serviceability in mind. The included master link allows easy installation and future chain replacement without removing the swing arm. DirtyBike also includes its exclusive 1mm aluminum alignment shim, allowing fine adjustment of sprocket alignment for quieter operation and improved drivetrain lifespan.

Why Riders Choose It

• Eliminates common belt slip issues in harsh riding conditions
• Premium RK sealed chain designed for high durability
• Retains stock gear ratio and riding characteristics
• Master link simplifies installation and maintenance
• Alignment shim helps reduce noise and improve chain life
• Ideal for demanding off-road conditions

Technical Information

• Primary drive conversion: 420 chain system
• Chain: RK GB420MXU sealed chain
• Chain type: Sealed design
• Includes master link
• Includes DirtyBike exclusive 1mm aluminum alignment shim
• Shim allows fine sprocket alignment adjustment
• Designed for quieter operation and reduced wear
• Maintains stock gear ratio

Fitment

• Surron Light Bee
• Segway X160
• Segway X260

Great For

• Serious off-road riders regularly riding in sand, mud, and dust
• High mileage riders wanting increased drivetrain reliability
• Performance builds pushing beyond factory belt limitations

Buyers and Maintenance Guide

Installation Tool