Bike Ceramic Pulley Rear Derailleur 11T 13T Guide For Shimano Sram 4nm 5nm 6nm MTB Road Bicycle Ceramic Bearing Jockey Wheel

Model Number : RN1955 Material :aluminium alloy Type : Rear Derailleur Brand Name : riderace Origin : Mainland China Components : Derailleurs Type1 : Bike Wheel Guide Bearing Jockey Pulley Type2 : Bicycle Ceramic Pulley Rear Derailleur Type3 : Bicycles Rear Derailleur Pulley Roller Idler Bearing Jockey Wheel Parts

The ceramic pulley rear gearbox of a bicycle is a device that affects the overall speed of the bicycle by changing the driving speed of the rear wheel. It usually has three or four speeds to accommodate different speed and load requirements. Switching between different flywheels on the rear gearbox can enable riders to maintain stable output power on different road sections and speeds, improving riding comfort and efficiency