SKU: 37105638633

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 Aug 15 - Aug 20

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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: 37105638633

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4.5 ★★★★★
Based on 29 reviews
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Product Reviews
E
Verified Purchase
Elysa S.
Phoenix, US
★★★★★ 5
Great, solid toy safe for my dog
Size: Large, Color: Blue, Size: Large, Color: Blue
This ball is great! My pit bull love toys, especially ones with squeakers, but she’s a power chewer and trashes them almost immediately. Since she’s got a history of swallowing foreign bodies, this means she’s rarely been able to have toys, and when she does get them, it’s short lived. She LOVES this ball and it’s already lasted multiple weeks with no signs of any damage, despite the fact she carries it everywhere and chews on it daily. We don’t have to worry about her safety with this toy, because it’s large and tough enough she can’t swallow anything. It hasn’t lost its squeak either despite all her tough love. She loves to play with it and we’re getting more of them asap so she has a backup if this one gets lost or eventually does break.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026
L
Verified Purchase
Luna Cherry
Belleville, US
★★★★★ 5
Truly indestructible
Size: Large, Color: Blue
They are not kidding, this ball is truly indestructible. I've gotten several for my dogs so they have plenty to share. Two of my dogs are beyond super chewers (bully breeds). One of the balls is missing the section that's glued into most of them, but the structure has still held up. And my dogs LOVE them.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
G
Verified Purchase
Gimmedap
Cuba, US
★★★★★ 4
Tough STINKY ball
Size: Large, Color: Red
This ball is the only one I've found that my dog can not destroy in seconds. He can chew on it for a few weeks before he works a hole in it. That's the good part. The bad side is the horrible smell! It doesn't seem to bother him, but it is horrible to my nose. It is so awful that I tried soaking it and dish soap and vinegar water overnight to see if I could make it go away. It was a little bit better but still stunk. Anybody got other suggestions on what could make the smell go away?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 5
A good toy for chewers!!
Size: Large, Color: Blue
My dog loves this ball! The best part is that he hasn't destroyed it yet. He's a real chewer and has destroyed several toys since I got him about 6 months ago. The ball is very solid and a the squeak is not annoying. A great toy
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
D
Verified Purchase
Devin McKey
Alexandria, US
★★★★★ 5
My dog loves it, holds up well
Size: Large, Color: Blue
My German Shepherd absolutely loves this ball! He is a pretty aggressive chewer and it has held up really well, not indestructible but it lasts. We currently have three and he always has one in his mouth.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026

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