Aluminum Alloy 11T 13T Rear Derailleur Pulley for Improved Ride Experience

Aluminum Alloy Chain Tension Guide Wheel for MTB Rear Derailleur Systems

Aluminum Alloy Bicycle Derailleur Pulley 10T 12T for MTB and Road Bikes

CNC Machined Derailleur Pulley Aluminum Alloy Construction 11T Gear Design

11T Rear Derailleur Pulley Aluminum Alloy CNC Guide Wheel for Accurate Shifting

Aluminum Alloy 11T 13T Rear Derailleur Pulley for Improved Ride Experience

CNC Machined Derailleur Pulley For Cycling For Bike Repair 11T Gear Design

Bicycle Rear Derailleur Guide Wheel 11T13T Compatible with 8 to 11 Speed