Shimano replacement pulley set for the Altus RD-M310 rear derailleur, suitable for 7/8-speed bicycle drivetrains.
This set includes 13-tooth and 15-tooth pulleys – exactly the same configuration as used in the original RD-M310 derailleur.

Reduced friction and quieter chain operation
Improved chain tension and smoother shifting
Longer drivetrain service life
Easier installation – an ideal solution when the original pulleys are worn, without the need to replace the entire derailleur

Key features:
Compatibility: Shimano Altus RD-M310 (7/8-speed)
Sizes: 13T (upper) + 15T (lower)
Material: Durable polyamide with high-quality bearings