11T 13T Rear Derailleur Pulley Wheel for Bikes Featuring CNC Aluminum Construction Lightweight Hollow Design and Smooth Operational Feel (13T(13T (red))
CNC Aluminum Alloy Bicycle Wheel 11T 13T Rear Derailleur Pulley with Ball Bearings Lightweight Durable Anti Rust for Mountain Road Bikes Black Red Golden Silver (13T)
ZenithAur Aluminium Alloy Wheel 11T / 13T Rear Derailleur Pulley for Mountain Road Bike Performance (13T)
Drfeify Alloy Rear Derailleur Bearing, CNC Aluminum Alloy Ceramic Bearings Bike Pulley 11T 13T Rear Derailleur Guide Roller, Suitable For 7/8/9/10 Speed (Blue
Folding Bike Chain Stabilizer Single Speed Lightweight Tension Adjuster for Folding Bike with 11T or 13T Rear Derailleur, Aluminum Alloy Black & Red 63g
PerGar Single Speed BicycleChain Tensioner, Aluminum Alloy Bike Chain Guide, Folding Bike Chain Stabilizer, For Folding Bike With 11t Or 13t Rear Derailleur
