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DirtyBike 420 RK MXU Primary Chain Drive Conversion Kit – Bonnell 805

DirtyBike 420 RK MXU Primary Chain Drive Conversion Kit – Bonnell 805

Regular price $111.00 USD
Regular price Sale price $111.00 USD
Sale Sold out
Taxes included. Shipping calculated at checkout.

Replace the Bonnell 805’s primary belt drive with a DirtyBike chain drive conversion kit using an RK 420 MXU sealed chain and hardened steel sprockets.

  • Designed for the Bonnell 805
  • Gear ratio similar to stock
  • Chain can be replaced without removing the swingarm
  • Serviceable chain drive for demanding off-road use

Fitment: Bonnell 805 only. Confirm compatibility with your bike’s configuration before installation. Check chain alignment, adjustment, and lubrication during installation and maintenance.

DirtyBike chain drive buyer’s and maintenance guide

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Black Friday at Radmoto

October 21–November 3: Free Warp9 31.8mm handlebars with an eligible in-stock Sur-Ron or E Ride Pro bike purchase.

Choose your Warp9 handlebar color and add the bars to your cart with an eligible bike. The handlebar discount applies automatically at checkout during the offer dates—no code needed.

One set per eligible bike, while supplies last. Confirm clamp compatibility before ordering. Handlebars ship separately at no extra charge. Cannot be combined with other discounts. Questions? Contact Radmoto.

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