A practical replacement for riders or home mechanics servicing a compatible 10-speed road or mountain-bike rear derailleur.
This tension and guide pulley set is a practical replacement for compatible 10-speed rear derailleurs. It includes both pulleys, making it a straightforward choice when worn, noisy or rough-running jockey wheels are due for replacement rather than attempting to refresh individual parts.
The tension pulley uses a sealed bearing to help protect its rotating support, while the guide pulley uses a ceramic bushing for smooth pulley support and rotation. Together, they help maintain consistent chain guidance and derailleur operation when fitted to the correct rear derailleur.
Compatibility is specific: the set suits RD-6770, RD-6700-A, RD-6700 and RD-6600 road derailleurs, plus M772, M771, M770, M810-A, M810 and T780 mountain-bike derailleurs. It can also be used with RD-7900 and RD-5701, although material, appearance, finish or size may differ. Check your derailleur model before ordering.
Complete pulley pair
Includes both the tension pulley and guide pulley, giving you the matching parts needed for a pulley replacement.
Sealed-bearing tension pulley
The sealed bearing provides protected support for the tension pulley and dependable rotation during drivetrain use.
Ceramic-bushed guide pulley
The ceramic bushing supports smooth guide-pulley movement as the chain passes through the derailleur.
10-speed drivetrain fit
Designed for selected 10-speed rear derailleur applications rather than universal use across every drivetrain generation.
Road compatibility
Fits specified RD-6770, RD-6700-A, RD-6700 and RD-6600 rear derailleurs.
Mountain-bike compatibility
Fits specified M772, M771, M770, M810-A, M810 and T780 rear derailleurs.
Replacement-service ready
A useful workshop part when worn pulley movement, noise or inconsistent chain guidance indicates that the jockey wheels need attention.
General
Compatibility
Construction and materials
What's included
Sealed bearing
The tension pulley uses a sealed bearing for a protected, durable pulley arrangement.
Ceramic bushing
The guide pulley uses a ceramic bushing for smooth pulley support and rotation.
