RK 420 Primary Belt to Chain Conversion | E Ride Pro | SR
Description
Description
Attention: See Warning Below Before Purchase! Returns will not be accepted after kit is installed!
Primary Drive System for E Ride Pro SR with the Best Sealed 420 Chain Available – RK 420 GB MXU
Warning! Some 3.0 and SR models can have an interference issue with this kit!
As the primary chain is adjusted the motor moves rearward. If moved back far enough, the motor can interfere with the final drive chain. It may be necessary to increase this clearance by grinding one or two of the motor fins where the contact is happening. If you are not OK with doing this, please do not purchase this kit.
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 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.
Note: Some of the E Ride Pro motors have shallow woodruff keyways. It may be necessary to remove 5.mm from one side of the woodruff key to allow it to fit properly.
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 info@elektrischesracing.com or use the chat below — we’re riders, and we’ll help you get the right part.
Installation
Installation
Most kits are plug-and-play. Installation guides are included in the box and available on our YouTube channel. For complex installations, we recommend watching our installation videos before starting.
FAQ
FAQ
Will this fit my bike?
Check the product title and description for compatible models. Contact us if unsure.
How long does shipping take?
Most orders ship within 1-3 business days from Laguna Beach, CA. Free shipping on orders over $200 (Lower 48).
Do you offer financing?
Yes! Shop Pay Installments and Affirm are available at checkout.
What’s your return policy?
We accept returns within 14 days on unused items in original packaging.
Payment & Security
Payment methods
Your payment information is processed securely. Buy Now, Pay Later available with Shop Pay Installments & Affirm.
Shipping & Returns
Free shipping on orders over $200 (Lower 48). Most orders ship within 1-3 business days.