Store Hours - Mon/Tue/Wed: 10-5, Thurs/Fri: 10-7, Sat: 10-4, Sun: 11-3
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