Primary Belt to Chain Conversion Kit | 420 | Sealed X-Ring | Surron Ultra Bee FactoryZ Stock grips wear out fast

Stock grips wear out fast

a high-power street setup

KTM 250 EXC-F 2000

Forged CNC aluminum construction — durable and lightweight

Primary Belt to Chain Conversion Kit | 420 | Sealed X-Ring | Surron Ultra Bee FactoryZ Stock grips wear out fastDirtyBike'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