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Shimano · Crank arm tool
The simple little tool you need to install or remove Shimano HOLLOWTECH II crank arm fixing bolts properly.
$14.99
PriceIn stock, ready to ship
If you're fitting, servicing or removing a Shimano HOLLOWTECH II crank, this is the dedicated tool for the preload cap/fixing bolt job. It's compact, inexpensive and gives you the right fit on the cap so you can set bearing preload cleanly without slipping or chewing up the bolt.
Sold by Ashburton Cycles
Verified store
Price
$14.99
Tool type
HOLLOWTECH II crank arm tool
Usage
HOLLOWTECH II/2-PIECE CRANKSET crank arm fixing bolt
Compatibility
HOLLOWTECH II
The Shimano HOLLOWTECH II crank arm tool is the small dedicated tool for installing and removing the crank arm fixing bolt / preload cap used on Shimano HOLLOWTECH II and 2-PIECE CRANKSET systems. If you're servicing a Shimano crank, changing a bottom bracket or swapping cranksets, this is the right tool for that specific step rather than trying to improvise with pliers or a coin.
In practice, this tool is used to set bearing preload before the left crank arm pinch bolts are tightened. That matters because the cap is only there to take out play in the system; once preload is set, the pinch bolts do the real clamping work. Using the proper tool helps you engage the cap evenly, avoid damage to the plastic bolt, and makes it much easier to remove a cap that has been snugged down properly.
For most home mechanics, this is one of those small workshop essentials that saves hassle every time a Shimano two-piece crank comes off. It's also tiny enough to keep in a toolbox or travel kit. If your bike runs a Shimano HOLLOWTECH II crankset across road, MTB, gravel or many e-bike applications, this is the straightforward tool that matches the job.
Ideal for home mechanics, travelling riders and workshop users servicing Shimano HOLLOWTECH II or 2-piece cranksets.

Dedicated HOLLOWTECH II fit
Made for Shimano HOLLOWTECH II and 2-PIECE CRANKSET crank arm fixing bolts, so you get the correct interface for installation and removal.
Sets preload correctly
Lets you adjust the crank cap to remove side play before tightening the left crank arm pinch bolts.
Helps protect the fixing bolt
A proper full-engagement fit reduces the chance of slipping, marking or damaging the preload cap compared with improvised tools.
Useful across Shimano categories
Widely used with Shimano road, MTB, gravel and many e-bike HOLLOWTECH II cranksets, so one small tool covers plenty of bikes.
Compact workshop essential
Tiny and easy to store, making it a practical addition to a home bench, toolbox or ride-support kit.
Low-torque hand use
This job only needs light preload, so the tool is designed for a simple hand-tight adjustment rather than heavy force.
The Best Tool For Shimano Cranks! BCS Hollowtech II Tool
sebibuchs
Every detail as listed by the manufacturer.

Shimano is a Japanese component brand founded in 1921 in Sakai, Osaka. The company began with bicycle component manufacturing and has grown into a global business focused on bicycle components, fishing tackle and rowing equipment, while keeping its headquarters in Sakai. In cycling, Shimano is best known for building complete component ecosystems that span road, mountain, gravel, commuting and e-bike use. Its range covers drivetrains, brakes, wheels, pedals, shoes and related parts, and the brand has had a long presence in Australia through a local business established in Sydney in 1992.
Shimano · Crank arm tool

The simple little tool you need to install or remove Shimano HOLLOWTECH II crank arm fixing bolts properly.
$14.99
In stockTool type
HOLLOWTECH II crank arm tool
Usage
HOLLOWTECH II/2-PIECE CRANKSET crank arm fixing bolt
Compatibility
HOLLOWTECH II
Compatibility
2-PIECE CRANKSET
If you're fitting, servicing or removing a Shimano HOLLOWTECH II crank, this is the dedicated tool for the preload cap/fixing bolt job. It's compact, inexpensive and gives you the right fit on the cap so you can set bearing preload cleanly without slipping or chewing up the bolt.
The Shimano HOLLOWTECH II crank arm tool is the small dedicated tool for installing and removing the crank arm fixing bolt / preload cap used on Shimano HOLLOWTECH II and 2-PIECE CRANKSET systems. If you're servicing a Shimano crank, changing a bottom bracket or swapping cranksets, this is the right tool for that specific step rather than trying to improvise with pliers or a coin.
In practice, this tool is used to set bearing preload before the left crank arm pinch bolts are tightened. That matters because the cap is only there to take out play in the system; once preload is set, the pinch bolts do the real clamping work. Using the proper tool helps you engage the cap evenly, avoid damage to the plastic bolt, and makes it much easier to remove a cap that has been snugged down properly.
For most home mechanics, this is one of those small workshop essentials that saves hassle every time a Shimano two-piece crank comes off. It's also tiny enough to keep in a toolbox or travel kit. If your bike runs a Shimano HOLLOWTECH II crankset across road, MTB, gravel or many e-bike applications, this is the straightforward tool that matches the job.
Ideal for home mechanics, travelling riders and workshop users servicing Shimano HOLLOWTECH II or 2-piece cranksets.
Dedicated HOLLOWTECH II fit
Made for Shimano HOLLOWTECH II and 2-PIECE CRANKSET crank arm fixing bolts, so you get the correct interface for installation and removal.
Sets preload correctly
Lets you adjust the crank cap to remove side play before tightening the left crank arm pinch bolts.
Helps protect the fixing bolt
A proper full-engagement fit reduces the chance of slipping, marking or damaging the preload cap compared with improvised tools.
Useful across Shimano categories
Widely used with Shimano road, MTB, gravel and many e-bike HOLLOWTECH II cranksets, so one small tool covers plenty of bikes.
Compact workshop essential
Tiny and easy to store, making it a practical addition to a home bench, toolbox or ride-support kit.
Low-torque hand use
This job only needs light preload, so the tool is designed for a simple hand-tight adjustment rather than heavy force.
The Best Tool For Shimano Cranks! BCS Hollowtech II Tool
sebibuchs