420 Primary Belt to Chain Conversion Kit | Sealed X-Ring | Surron Ultra Bee pro s even in the toughest off-road

even in the toughest off-road conditions

Engineered to be thicker and stronger than the stock version

ensuring riding safety

Bike Fitment

local support

420 Primary Belt to Chain Conversion Kit | Sealed X-Ring | Surron Ultra Bee pro s even in the toughest off-roadDirtyBike'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