Mon, Sun: 11:00am - 4:00pmTue, Wed: ClosedThu - Sat: 11:00am - 6:00pm
The Shimano Altus RD-M310 rear derailleur is a quality, durable replacement rear derailleur for 7 and 8-speed drivetrains.
- 13t upper and 15t lower pulleys
- Maximum cog size: 34t
- Total capacity: 43t