Ideal for commuters, recreational riders and home mechanics replacing a worn Shimano-compatible derailleur on a 7- or 8-speed bike.
The Shimano RD-M310 is a dependable 7/8-speed rear derailleur from the ALTUS series. It is a practical choice when you are replacing a worn derailleur, restoring an older bike or keeping a straightforward multi-speed drivetrain running smoothly. The black finish gives it a clean, understated look. Before ordering, match it with your existing drivetrain speed and check that the derailleur’s capacity suits your cassette, chainrings and chain length.
Shimano’s Wide Link design adds rigidity to the derailleur structure, helping support more precise shifting as you move through the cassette. The Advanced Light Action mechanism is designed to reduce the effort required at the shifter, while the compact SMART CAGE keeps the derailleur neatly packaged on the bike.
The RD-M310 also uses a MegaPulley arrangement designed to reduce operating noise and wear. With a published 43T total capacity, it offers useful range for many 7- and 8-speed setups, but drivetrain compatibility still depends on the complete system, including the shifter, cassette, chain and derailleur hanger. For a sensible, serviceable replacement rather than a high-end performance component, this is an easy component to shortlist.
7/8-speed compatibility
Designed for 7- and 8-speed drivetrains, making it suitable for many practical replacement and restoration projects.
43T total capacity
The published capacity provides useful room for a broad range of cassette and chainring combinations, subject to complete-drivetrain compatibility.
Wide Link design
The wider link adds rigidity to support more precise shifting through the rear cassette.
Advanced Light Action
The light-action mechanism is designed to make gear changes feel easier at the lever.
SMART CAGE
The compact cage gives the derailleur a neatly packaged profile while supporting the drivetrain.
MegaPulley system
The pulley arrangement is designed to reduce operating noise and wear during regular use.
ALTUS series
A practical Shimano component choice for everyday bikes, repairs and straightforward drivetrain builds.
General
Features
Colour
Wide Link
The wider link design adds rigidity to support more precise shifting performance.
Advanced Light Action
The light-action mechanism is designed to make shifting feel easier at the lever.
SMART CAGE
The compact cage design helps package the derailleur neatly while supporting the 7/8-speed drivetrain.
MegaPulley
The oversized pulley arrangement is designed to reduce noise and wear during operation.
Shimano is a Japanese component brand founded in 1921 in Sakai, Osaka. The company began with bicycle component manufacturing and has grown into a global business focused on bicycle components, fishing tackle and rowing equipment, while keeping its headquarters in Sakai.
In cycling, Shimano is best known for building complete component ecosystems that span road, mountain, gravel, commuting and e-bike use. Its range covers drivetrains, brakes, wheels, pedals, shoes and related parts, and the brand has had a long presence in Australia through a local business established in Sydney in 1992.
