Shimano DEORE FCMT520 – Crankset for 12-Speed Boost Drivetrains
The Shimano DEORE FCMT520 crankset is a crankset specifically designed for mountain bikes with 1x drivetrains. It is compatible with 12-speed cassettes and Boost mounting width, providing reliable power transfer on demanding trails.
The 30-tooth chainring offers a balanced gear ratio for long climbs and smooth off-road riding.
The 165 mm crank arm length ensures optimal leg clearance and efficient power transfer.
Direct-mount chainring makes replacement easy without special tools.
Boost compatibility (55 mm chainline) fits modern mountain bike frames.
The 24-month manufacturer warranty provides peace of mind for long-lasting use.
What sets the Shimano DEORE FCMT520 apart
The Shimano DEORE groupset offers reliable performance. The FCMT520 crankset uses the proven Hollowtech-II technology for stiffness and weight reduction. Precision engineering ensures durable, low-wear shifting.
Ideal for...
This crankset is aimed at mountain bikers using a 1x drivetrain with a 12-speed cassette. It is especially suitable for trail and enduro riding where robustness and a wide gear range are required. It also fits e-MTBs with the Boost standard.
How to install the crankset
Remove the old crankset using a crank puller.
Clean the bottom bracket shell and grease the threads.
Install the new bottom bracket (if needed) and tighten to the specified torque.
Mount the crank arms and tighten the crank bolts (12–14 Nm).
Attach the chainring to the crank and fit the chain.
Check chain tension and adjust the derailleur if necessary.
Shimano is a Japanese manufacturer of bicycle components, fishing tackle, and rowing equipment. The company is known for high-quality drivetrain components such as derailleurs, cranks, and chains. The DEORE groupset is aimed at mountain bikers and offers reliable performance for demanding trails.
The Shimano DEORE FCMT520 crankset is the crankset for mountain bikes with 1x drivetrains and 12-speed cassettes. It includes a direct-mount 30-tooth chainring and a 165 mm crank arm.
The crankset is designed for Boost mounting width (55 mm chainline) and a 24 mm axle. It requires a bottom bracket with 24 mm inner diameter, e.g., Shimano SM-BB52 or SM-BBMT500. The cranks are compatible with 12-speed chains.
Crank arm length: 165 mm, Chainring: 30 teeth, Chainline: 55 mm, Compatible mounting width: Boost, Axle diameter: 24 mm, Bolt circle: Direct Mount, Weight: approx. 1.27 kg.
The delivery includes the crankset with the chainring mounted. The bottom bracket is not included. Required tools: crank puller, torque wrench, 8 mm hex key.
The crankset is low-maintenance. Occasional cleaning and regreasing of the crank bolts is recommended. A 24-month manufacturer warranty applies.
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