Shimano Altus RD-M310 Rear Derailleur

Description

Maximum Precise Shifting Performance

When navigating technical singletrack, conquering steep fire-road climbs, or keeping pace with everyday city traffic, your rear derailleur defines your shifting accuracy and drive efficiency. The Shimano Altus RD-M310 Rear Derailleur is engineered explicitly for riders who demand crisp, reliable gear changes and want to completely eliminate hesitation and chain slack on 7 and 8-speed multi-surface drivetrains.

Boasting Shimano’s advanced light-action construction paired with a high-rigidity Wide Link design, this derailleur optimizes gear transitions by reducing body flex during heavy pedaling loads. Beneath its clean profile, the system features a unique oversized 13-tooth guide pulley and a 15-tooth tension pulley. This larger setup significantly reduces friction, shortens the required cage profile for greater ground clearance, and wraps chain slack silently. To isolate your drivetrain from rattling chain noise and unexpected skipping, Teflon-coated link bushings smooth out every swing across the gear range, keeping you in comfortable control much more effectively than standard, budget-tier rear mechanisms.

Technical Highlights

High Rigidity Wide Link: Advanced light-action body geometry holds a tight, uniform alignment to deliver fast, highly repeatable shifting without lag.

Oversized Pulley System: Features 13T upper and 15T lower wheels that minimize internal chain articulation friction and maximize structural longevity.

All-Weather Resilience: Painted steel and high-impact composite link construction shrug off mud pack-up, trail dust, and rain, protecting the adjusting hardware from corrosion over long seasons.

Specifications