E RIDE PRO DirtyBike RK 420 Primary Belt to Chain Conversion
SKU: 30387436112

E RIDE PRO DirtyBike RK 420 Primary Belt to Chain Conversion

$75.60 $84.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 4 - Jul 9

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For Your Every Summer RSVP, with Code: SUMMER15

Description

E RIDE PRO DirtyBike RK 420 Primary Belt to Chain ConversionDirtyBike 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. Dont let this happen! Install a DirtyBike Industries primary chain drive system. With the world famous RK GB4MXU chain, this is a necessary upgrade for

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.

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!

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30387436112

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4.0 ★★★★★
Based on 346 reviews
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B
Verified Purchase
Beverly Durham
Fort Morgan, US
★★★★★ 5
Works wonders
Size: M (up to size 9)-Beige
Works wonders for dry feet, like really dry, hard feet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
T
Verified Purchase
Therapy by the Sea
Omaha, US
★★★★★ 4
EXCELLENT FEET MOISTURE PROTECTION
Size: S (up to size 7)-Beige, Size: S (up to size 7)-Beige
Why did you pick this product vs others?: I have burns on my feet and needed something that I could put burn creme on and still walk around in with. I tried other silicone footsie but they would teae really easily. So far these are doing really well for this purpose. They are holding their shape too. The only caution I have is the same with all silicone footsies: They can be slippery on wet floors, so also wear with socks over them. The biggest issues is when they say a size they mean it. The silicone used in these have little give in them, so they won't stretch out and loose their shape. That can be a good thing, or not so good, depending on how well they fit your feet and what your intent is with wearing these. The other issue is if they fit snug around those toes, that tends to be where the first tear in the material will happen. Because of how these are made, the tear is actually more like cracking in the material and once it occurs you won't be able to get much use out of the sock after that. If you are planning to wear them around the house or for long term use, I suggest going up a size or look for the toeless options.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2025
S
Verified Purchase
Shawna
Cuba, US
★★★★★ 3
Silicone socks
Size: M (up to size 9)-Beige
The socks are sized large. The quality of the silicone is good. But they slide around on your feet if you try to walk, making them difficult to use and a bit uncomfortable. Unless you are able to sit for long periods of time the likely will not work well. Recommend looking for a better value.
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Reviewed in the United States on October 27, 2024
A
Verified Purchase
Ann
Lowell, US
★★★★★ 5
Effective
Size: L (up to size 11)-Pink
Fantastic. I put lotion on my feet & wear them when I go to sleep. I often wake up during the night and will remove them to find my feet soft and smooth. They are strong and fit my size 10 womens’ size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
S
Verified Purchase
Stacy
Omaha, US
★★★★★ 1
The shoe size should be smaller 9 is the max and it is still to tight
Size: M (up to size 9)-Beige, Size: M (up to size 9)-Beige
Very tight had to take off my feet in the middle of the night they were cutting off my circulation.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026

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