Shimano SLX FC-M580 crankset

Shimano SLX crankset: focus on the Deore LX FC-M580 9-speed model

In the world of MTB drivetrains, the Shimano SLX crankset is often praised for its excellent balance between performance and affordability. However, if we look back a bit in Shimano’s range, we find robust and still very capable models like the Shimano Deore LX FC-M580 9-speed crankset. Ideal for both amateur and experienced mountain bikers, this crankset continues to impress with its reliability, compatibility, and long-lasting performance.

A key component of the MTB drivetrain

The crankset is a crucial part of your bike’s drivetrain. It transforms your pedaling power into forward motion by driving the chain, which in turn rotates the cassette. The Shimano Deore LX FC-M580 does this with efficiency and precision. Designed for versatile MTB use, it offers excellent stiffness, smooth pedaling, and precise gear changes.

Shimano Deore LX FC-M580 technical specs

Here are the specifications of this 9-speed MTB crankset:

• Chainring setup: Triple – 44/32/22 teeth

• Crank arm lengths: Available in 170 mm or 175 mm

• Compatibility: Shimano 9-speed drivetrains

• Integrated spindle: Hollowtech II technology for improved stiffness and power transfer

• Pedal thread: Standard 9/16"

• Weight: Approx. 950 g including bottom bracket

• Material: Forged aluminum – lightweight and strong

• Compatible bottom brackets: Shimano BB-ES25 or BB-ES51 (depending on version)

This crankset works in perfect harmony with the rest of the Shimano drivetrain, including front and rear derailleurs, Rapidfire shifters, and HG chains.

Why choose this crankset over a modern SLX ?

Today’s Shimano SLX cranksets are top-tier components for modern 1x12 or 2x11-speed setups. But the FC-M580 still stands out for its versatility, especially for riders who prefer triple chainring configurations. It's a great choice for bike touring, long-distance rides, and climbing-heavy terrain where a wider gear range is crucial.

In addition, it’s easy to maintain. The chainrings are individually replaceable, and its compatibility with older Shimano components makes it a cost-effective solution.

Compatibility and installation

This crankset is compatible with most MTB frames using a BSA threaded bottom bracket. Thanks to the Hollowtech II integrated spindle, installation is straightforward and delivers excellent rigidity. It pairs best with a 9-speed chain, and performs reliably even in tough conditions like mud, sand, or rain.

In summary

The Shimano Deore LX FC-M580 9-speed crankset is still an excellent option for riders looking for a smooth, durable, and versatile drivetrain for their MTB. While it's from an earlier generation than today’s Shimano SLX cranksets, it holds its own in terms of build quality and on-trail performance. For cyclists who value reliability and mechanical simplicity, this crankset remains a solid and proven choice.