Depending on the gear ratio pulleys turn very fast and therefore quality ceramic bearings are very important.
Ceramic bearing rear derailleur.
Full ceramic bearings are standard on aita ceramic jockey wheel pulley of the rear derailleur.
Cyclingdeal road bike bicycle lightweight ceramic bearing modified pulley rear derailleur cage compatible with shimano 11 speed ultegra 8000 dura ace 9100 r8000 8050 8070 9170 9150 9100 49 99 49.
Our latest oversized derailleur pulleys feature larger tooth engagement and add a chain catcher on the lower pulley guaranteeing accurate shifts and better chain retention on every ride.
Buy garbaruk derailleur pulleys with ceramic bearings and get free shipping.
Rear derailleur alluminium pulleys ceramic bearings iscriviti.
Ceramic bearings have to compensate for a lot of friction.
Ceramic bearing have an incredibly smooth surface thereby reducing rolling resistance to a minimum.
Even better you can get them at a price that lets you upgrade other drivetrain parts like perhaps a new ceramic bottom bracket.
It spins freely in your fingers and doesn t waste energy in the real.
Full ceramic bearing jockey wheels pulleys for shimano sram 10 speed 11 speed rear derailleur system.