Shimano Altus RD-M370 rear derailleur 9s

Shimano Altus RD-M370 9-speed: a reliable rear derailleur for smooth shifting

When it comes to upgrading your bike’s drivetrain, the choice of rear derailleur plays a key role. Among the most popular models for casual riders as well as regular cyclists, the Shimano Altus RD-M370 9-speed stands out for its efficiency, durability, and excellent value for money. Often compared to the Shimano Alivio 9-speed, it occupies a strategic place in Shimano’s lineup, offering the perfect balance between performance and affordability.

A derailleur built for precision

The main purpose of a rear derailleur is to ensure smooth and precise gear changes. With the Shimano Altus RD-M370, your transmission gains in comfort and reliability:

• Compatibility: designed for 9-speed cassettes (11-32, 11-34, or 11-36 teeth).

• Total capacity: 45 teeth, suitable for both triple and double cranksets.

• Long cage (SGS): ideal for trekking bikes, mountain bikes, or hybrid bikes.

• Shimano Index System (SIS): each click of the shifter corresponds to a crisp, accurate gear change.

Shimano Altus RD-M370 9-Speed Technical Features

• Type: rear derailleur for MTB / trekking.

• Speeds: compatible with 9-speed drivetrains.

• Weight: approx. 320 g.

• Construction: steel and aluminum for enhanced strength.

• High-quality pulley bearings to reduce friction and improve longevity.

Advantages of this rear derailleur

The Shimano Altus RD-M370 9-speed is known for its reliability. It delivers consistent shifting performance, even in tough conditions such as rocky trails, muddy tracks, or long road rides. Key benefits include:

• Greater durability than other entry-level models.

• Versatility, making it suitable for MTB and touring bikes.

• Compatibility with other Shimano components, especially Acera and Alivio.

Shimano Altus RD-M370 vs Shimano Alivio 9-Speed

The comparison between the Shimano Altus and the Shimano Alivio 9-speed is a common one:

• The Altus RD-M370 is designed for leisure and trekking use, with solid resistance.

• The Shimano Alivio 9-speed, on the other hand, is geared toward more regular cyclists looking for extra precision and lighter weight.

In short: the Altus is an excellent entry-level option to improve your bike’s drivetrain, while the Alivio 9-speed represents the next step up, with better finishing and higher performance.

Conclusion

The Shimano Altus RD-M370 9-speed is a reliable, solid, and affordable rear derailleur, perfect for riders who want to maintain or upgrade their drivetrain without overspending. Versatile and compatible with many setups, it’s a smart alternative to the Shimano Alivio 9-speed, while remaining easy to adjust and maintain.

Whether you ride a mountain bike, a touring bike, or a hybrid, this derailleur ensures precise, smooth, and dependable shifting.