DirtyBike's 420 Sealed X Ring Standard Primary Chain Drive System For Sur-Ron Ultra Bee.
Torture-tested in the 2024 RedBull TKO Extreme Enduro Where It Performed Flawlessly.
More Efficient Than Belt
Better Acceleration
Longer Run Time
Easy Maintenance
Similar To Stock Gear Ratio
Chain can be replaced without removing the swing arm
This system is essential for serious off-roaders and retains the original gear ratio. 420 sealed X-ring chain with master link can be replaced easily without removing the swing arm.
Be sure to include the DirtyBike Ultra Bee Swingarm Alignment Tool! Makes the job of aligning the mid shaft shaft and swing arm much easier.
Note: If you are planning to use this kit with the EMBX XUB-80 motor the front sprocket will require modification. Please contact us for more information.
I’d say I’m impressed of the product, aluminum bracket and maybe the case, plexiglass screen protector. Maybe the it’s a little bit pricey but with the TBelectric coupon discount, I can’t complain. I’m glad I bought it.
This is a fantastic upgrade to the rear stock tire. If your riding dirt, this is your tire. I did have to slice off 1/8" corner of the chain side knobs, an easy fix
After trying for hours to get a stock eRide stem lock installed back into a new set of forks, I bought the warp 9 stem lock and spent 10 seconds installing it! Also it is super well built and gives you forks a smooth tightness.