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.
Great communication! And Care taken even on a small order
I placed a small order; there was a lot of back and forth because I had questions and all my questions were answered! There was some miscommunication with the delivery speed BUT to TB defense the order was in the hands of USPS within 30-45 mins of completing my order. I had a I had a email confirming that. There was a small mistake made, but it was quickly corrected and rectified. based on how much attention was placed on such a small order. I would 100% trust them with a big order. Communication will definitely not be an issue.
I'm not shure if i got the wrong one I ordered bottom seat bolt and I think they sent me the top version the mounts line up but my seat bolt is too short and I had to drill a hole for it
