Box Four 8S Derailleur and Shifter Elegant helping effectively reduce vibration and

helping effectively reduce vibration and fatigue

The Chain Lock Defender offers robust security with its 7mm hardened steel chain

* Please be sure which size rim your VoltBike needs

Fits VoltBike Yukon

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Box Four 8S Derailleur and Shifter Elegant helping effectively reduce vibration andBox Four 8 speed wide rear clutch derailleur and Box Four 8 speed shifter bundle. The Box Components rear derailleur boasts a limited slip clutch with instant engagement and constant torque which prevents dropped chains and minimizes chain slap. Highly recommended for any mid drive electric bike and is an excellent upgrade over the traditional Shimano drivetrain.