BOX Four Rear Derailleur Pioneer® 56 improving safety and confidence at

improving safety and confidence at any speed

95 inches (W) x 14

Customizable Speed Range

The Kansha is designed to help you relax

Monitor your average and maximum cadence to optimize your training

BOX Four Rear Derailleur Pioneer® 56 improving safety and confidence atThe BOX Four Rear Derailleur is an affordable clutch based 1x8 speed derailleur that is both simple and lightweight. Engineered with BOX's "8 is Enough" drivetrain philosophy Compatible with standard derailleur hanges (non direct mount) Limited Slip Clutch Bearing pulleys Nylon composite knuckle Direct channel cable stay Die cast linkages Stamped inner and outer cage