Shimano Altus RD-M310 7/8Speed

Refined Shifting. Overbuilt Durability.

The Shimano RD-M310 stands out with its Wide Link design, which increases the rigidity of the derailleur body. This extra stiffness resists flexing during shifts, resulting in a more immediate and accurate response at the cassette. Whether you’re downshifting for a sudden incline or sprinting away from a stoplight, the Altus M310 ensures your chain lands exactly where it needs to be.

Why the RD-M310 is the Right 7/8Speed Option:

• Wide Link Geometry: The broadened pivot links increase structural stiffness, reducing "vague" shifting and ensuring long-term pivot durability compared to narrower, budget models.

• Oversized 13/15Tooth Pulleys: Features a massive 15T tension pulley and a 13T guide pulley. These larger wheels reduce chain friction and noise while significantly extending the life of the pulley bearings.

• Low-Profile "Smart" Design: The compact cage and body geometry provide better clearance from trail obstacles, reducing the risk of rock strikes or snagging on debris.

• MegaRange Compatibility: Fully optimized for Shimano’s "MegaRange" cassettes, easily handling up to a 34T low gear for effortless climbing on steep terrain.

• Light Action Spring: Engineered with a refined spring tension that reduces the effort required at the shifter, making it an excellent choice for riders who prefer a "light" and fast shifting feel.

• All-Metal Primary Construction: Built with high-quality alloy and steel components for a robust feel that stays in adjustment even after months of heavy use.

Technical Specifications:

• Speeds: 7 / 8Speed

• Max Low Sprocket: 34T

• Min Low Sprocket: 28T

• Top Sprocket: 11T

• Total Capacity: 43T

• Construction: Aluminum/Steel

• Weight: Performance Balanced (approx. 310g)

The Alegro Perspective: In the shop, we call the RD-M310 the "Great Reliable." If you’re looking to replace a basic Tourney derailleur or a generic unbranded unit, this is the first "real" performance jump in the Shimano lineup. The oversized 15T pulley is a game-changer for drivetrain noise. It runs noticeably quieter and smoother than almost anything else in this price bracket. It’s the "smart money" choice for a reliable bike build.

Crisp Response. Rugged Reliability. Solve your Drivetrain with Shimano Altus.