E RIDE PRO DirtyBike RK 420 Primary Belt to Chain Conversion
E RIDE PRO DirtyBike RK 420 Primary Belt to Chain Conversion
Description
Description
DirtyBike Industries primary drive system now available with the best sealed 420 chain available. RK 420 GB MXU!
If you ride in dusty, sandy or muddy conditions you may have primary belt slippage which will eventually fail the stock primary belt, possibly leaving you stranded in the middle of nowhere. Don’t let this happen! Install a DirtyBike Industries primary chain drive system. With the world famous RK GB4MXU chain, this is a necessary upgrade for the serious off-road rider and maintains stock gear ratio.
RK GB420MXU 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.
This kit comes with db DirtyBike Industries exclusive 1mm aluminum alignment shim allowing you to adjust the sprocket alignment for a quieter, longer lasting drive system.
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! |
Fitment & Compatibility
Fitment & Compatibility
Please verify your bike model and year before purchasing. If you have questions about fitment, contact us at support@elektrischesracing.com or use the chat below — we’re riders, and we’ll help you get the right part.
Installation
Installation
Installation requirements vary by product and vehicle. Review the product description and available manufacturer instructions before installation. Contact support@elektrischesracing.com for fitment or installation questions.
FAQ
FAQ
Will this fit my bike?
Check the product title, description, and fitment details above for compatible models. Not sure? Email support@elektrischesracing.com or use live chat and we’ll confirm before you buy.
How long does shipping take?
Availability and estimated ship time for this exact item are shown above, next to Add to Cart. Processing and shipping times vary by product and fulfillment partner. In-stock orders fulfilled directly by Elektrisches Racing generally process within 1–3 business days; supplier-shipped, made-to-order and backordered items can take longer. Shipping rates and any available free-shipping offers are confirmed at checkout.
Do you offer financing?
Yes! Shop Pay Installments and Affirm are available at checkout.
What’s your return policy?
Eligible unused items may be returned within 14 days of delivery, subject to the store’s refund policy and exclusions. Baja Designs, Warp 9, GUTS Racing, Sur-Ron OEM and KO/EBMX products are not eligible for standard returns or exchanges through Elektrisches Racing; manufacturer warranty claims are handled by the manufacturer — see our Refund Policy for full details.
Payment & Security
Payment methods
Your payment information is processed securely. Buy Now, Pay Later available with Shop Pay Installments & Affirm.
Shipping & Returns
Shipping rates and available offers are confirmed at checkout. Fulfillment locations and timelines vary for Shopify Collective and other supplier-shipped products. Shipping options and charges are confirmed at checkout. See our Shipping Policy.