How do I know if my Shimano crankset needs this tool?

Name: Shimano Crankarm Cap Tool
Brand: Shimano
SKU: SHIMANO-CRANKARM-CAP-TOOL
Price: 7.99 USD
Availability: InStock
Rating: 5.00 (1 reviews)

Thanks for the great question! Shimano’s transitioned to Hollowtech II in the mid-2000s. These cranksets use a small preload cap on the left crank arm and this tool is used to remove and install it. If you see two small pinch bolts your left crank arm, it’s a Hollowtech II system and you'll need this tool.

Shimano Tools

Shimano Crankarm Cap Tool

Josh Matthew August 21, 2025

MPN: Y13009220

5.00 out of 5 based on 1 customer rating

(1 customer review)

$7.99

For the instillation or removal of Shimano Hollowtech II cranks

Only 2 left in stock – Ships today! (Friday)

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Shimano Crankarm Cap Tool

The Shimano Crankarm Cap Tool is used when installing or removing Shimano Hollowtech II left crank arms. The tool simply inserts into the outboard crank cap and allows you to loosen or tighten the cap as necessary.

1 review for Shimano Crankarm Cap Tool

Rated 5 out of 5

Barry (verified owner) – February 20, 2021

Perfect fit, easy to use.
- Power Meter City – February 24, 2021
  
  Hi Barry. Thanks for this! Let us know if there is anything else we can do!