Replacement jockey wheels for Box One™ 11 speed Rear Derailleur
- (2) Bolt, Pulley
- (1) Pulley Assembly, Lower, 13T
- (2) Spacer, Pulley, 1.5
- (1) Pulley Assembly, Upper, 11T
- (2) Spacer, Pulley, 1
Note: The same wheels can be used to upgrade the jockey wheels on the Box Two 11 and 9 speed derailleurs as the Box One wheels have sealed bearings.