Bicycle Components & Accessories

MTB Bicycle Rear Derailleur Jockey Wheel 11T--18T Ceramic Bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm 5mm 6mm MTB Bicycle Rear Derailleur Jockey Wheel 11T--18T Ceramic Bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm 5mm 6mm MTB Bicycle Rear Derailleur Jockey Wheel 11T--18T Ceramic Bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm 5mm 6mm