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ShimanoSLX FC-M7120 1x Crank Arms


Item # SHIU1D4

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  • Black, 175mm ($102.99)
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Item # SHIU1D4

Why We Like The SLX FC-M7120 1x Crank Arms

In the world of Shimano, trickle-down tech means these SLX FC-M7120 Crank Arms are the beneficiary of years of testing on higher-end drivetrains. Built tough for years of use, these SLX Cranks use the exact same chain retention system and technology as its higher-end cousin, but at a fraction of the cost. We’ll put these on our bikes and forget about them year after year of top-quality drivetrain performance.

  • Durable crank arm loaded with trickle-down tech
  • Cinch chainrings install easily and are hassle-free
  • Upgraded crank arms for the 12sp Shimano family
  • Hollowtech II+ is lightweight and ultra-durable
  • Dynamic Chain Engagement keeps 1x chains on the chainring

Tech Specs
Arm Materialaluminum
Arm Length165mm, 170mm, 175mm, 180mm
Bolt Circle Diameterdirect mount
Q Factor178mm

Actual Weight

Black, 175mm

Claimed Weight

Claimed weights are provided by the vendor.

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[30t] 1lb 6.6oz (641g), [32t] 1lb 6.5oz (638g), [34t] 1lb 8oz
641g), [32t] 1lb 6.5oz (638g), [34t] 1lb 8oz (653g

Actual weights are measured in-house by the Competitive Cyclist team.

Have questions? Chat with a Gearhead

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