Primary Belt to Chain Conversion Kit | 420 | RK MXU | Surron LBX
DirtyBike Primary Drive System With RK 420 GB MXU Chain – The Best Sealed 420 Chain Available
Don’t risk your stock belt failing in the middle of a ride — install a DirtyBike primary chain drive system. With the world famous RK 420 GB MXU chain, this is a necessary upgrade for the serious off-road rider and maintains stock gear ratio.
RK GB 420 MXU 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.
Kit comes with DirtyBike exclusive 1mm aluminum alignment shim allowing you to adjust the sprocket alignment for a quieter, longer lasting drive system.
Installation Video
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! |
DirtyBike Primary Drive System With RK 420 GB MXU Chain – The Best Sealed 420 Chain Available
Don’t risk your stock belt failing in the middle of a ride — install a DirtyBike primary chain drive system. With the world famous RK 420 GB MXU chain, this is a necessary upgrade for the serious off-road rider and maintains stock gear ratio.
RK GB 420 MXU 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.
Kit comes with DirtyBike exclusive 1mm aluminum alignment shim allowing you to adjust the sprocket alignment for a quieter, longer lasting drive system.
Installation Video
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! |
Original: $99.99
-65%$99.99
$35.00Description
DirtyBike Primary Drive System With RK 420 GB MXU Chain – The Best Sealed 420 Chain Available
Don’t risk your stock belt failing in the middle of a ride — install a DirtyBike primary chain drive system. With the world famous RK 420 GB MXU chain, this is a necessary upgrade for the serious off-road rider and maintains stock gear ratio.
RK GB 420 MXU 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.
Kit comes with DirtyBike exclusive 1mm aluminum alignment shim allowing you to adjust the sprocket alignment for a quieter, longer lasting drive system.
Installation Video
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! |
