420 Primary Drive Sealed X-Ring Replacement Chain | Surron Ultra Bee420 Primary Drive Sealed X Ring Replacement Chain Sur Ron Ultra Bee Replacement 420 sealed X ring chain designed specifically for use with DirtyBike primary belt to chain conversion kits for Sur Ron Ultra Bee. Built to handle the demands of electric drivetrains, the X ring design reduces friction while retaining lubrication for consistent, long service life. This chain is a direct fit for DirtyBike 420 primary conversion kits for the Ultra Bee. Key

Stainless Steel Lever Bushing

KTM 125 SX 2004-2008

and aggressive riding

Designed around the Ultra Bee platform so install is straightforward and the result is solid

Captive adjustment bolt design: turning the bolt moves the blocks forward and backward with the block held tight to the bolt — no play

WR250F 20–current

Turn your e-moto into a fully tunable race machine

MX3 and XXX

Max Torque: 68N

YAMAHA YZ 250 F 2003-2004

The Eride Pro SS Rear Moto Brake Dual Caliper Kit Includes:

Extended Length: 850mm