Shimano RD-M310 Altus 7/8 Speed Rear Deraileur SGS 7 Speed which means that you and

which means that you and your bike's drivetrain will stay clean of road muck and grime

fully adjustable and with an all-alloy construction

We incorporated leading edges into the centre of the tread for braking and acceleration traction in all conditions

Sturmey-Archer was first established in England in 1902 when they invented the 3-speed internal gear hub

Shimano RD-M310 Altus 7/8 Speed Rear Deraileur SGS 7 Speed which means that you andAltus mountain bike rear derailleur with light action operation and over size pulleys for a wide gear choice Oversize 13 15 tooth tension and guide pulleys to reduce noise and wear Extension spring and low friction fluorine coated link pivot bushing result in a light shifting action Top normal spring for use with Rapidfire shifters IG and HG chain, 7 and 8 speed compatible For use with 28 to 34 tooth low rear sprockets, total capacity 43 teeth