Bicycle Components & Accessories

New 12T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm5mm6mm New 12T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm5mm6mm New 12T MTB Bicycle Rear Derailleur Jockey Wheel Ceramic bearing Pulley AL7075 CNC Road Bike Guide Roller Idler 4mm5mm6mm