Derailleurs

- 13-30T - Indexed Adjuster - Weight: 230g-270g

- 11-34T - Weight—354g

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