Left crank Shimano FC-M391 170 mm

Shimano 170 mm crank arm FC-M391: performance and durability for your drivetrain

When it comes to optimizing your MTB or hybrid bike’s drivetrain, choosing the right components is essential. The Shimano 170 mm crank arm FC-M391 stands out for its robustness and efficiency, making it an ideal choice for cyclists seeking reliability and performance. Discover its features and specifications to understand why it is a must-have component.

Features of the Shimano 170 mm crank arm FC-M391

The Shimano 170 mm FC-M391 crank arm belongs to the Alivio range, known for offering excellent value for money. Here are its main features:

• Crank arm length: 170 mm, a versatile format suitable for most cyclists.
• Material: aluminum, ensuring a good balance between lightness and durability.
• Compatibility: designed for 3x9-speed drivetrains, it integrates perfectly with Shimano Alivio groupsets and similar transmission systems.
• Mounting type: equipped with a square taper interface for a simple and secure installation.
• Compatible chainrings: 44-32-22 teeth, ideal for MTB and trekking riders looking for a wide gear range.
• Weight: approximately 900 g with chainrings, offering a well-balanced setup for versatile use.

Why choose the Shimano 170 mm FC-M391 crank arm?

1. Durable and resistant design

Made of high-quality aluminum, this Shimano 170 mm crank arm is resistant to impacts and wear while remaining lightweight. Its anodized coating enhances durability, reducing the effects of scratches and corrosion.

2. Smooth and precise drivetrain performance

Thanks to its optimized design, this crank arm provides smooth and efficient pedaling. The compatibility with a triple chainring setup allows for a wide gear range, ideal for varied terrains and long rides.

3. Easy installation and maintenance

The square taper system simplifies mounting and disassembly, making this crank arm accessible to cyclists who prefer to maintain their bikes themselves.

Who is this crank arm for ?

This Shimano 170 mm crank arm is ideal for:

• Mountain bikers looking for a reliable drivetrain for challenging rides.
• Trekking cyclists needing a broad gear range to tackle diverse terrains.
• Hybrid bike riders who want to combine performance and comfort.

Conclusion

The Shimano 170 mm crank arm FC-M391 is a must-have component for cyclists seeking a durable and high-performing solution. With its robust design, extensive compatibility, and smooth pedaling experience, it is an excellent choice for upgrading or replacing a worn-out crankset.

Whether you ride on rugged trails or smoother roads, this crank arm guarantees an optimized and enjoyable pedaling experience.