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Crankbrothers M13 multi-tool review

A good trailside companion

Our rating 
4.0 out of 5 star rating 4.0
GBP £26.00 RRP | USD $26.00 | AUD $50.00
Best bike multi-tool

Our review

A solid, useful tool, but you’ll need to spend a little more if you want one with a chain breaker
Pros: Sturdy and well-made; all the useful Allen and Torx keys; tyre plug kit is a great addition
Cons: No chain breaker; it’d be great to be able to lock the tyre plug tool in place when in use
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I’m a fan of Crankbrothers’ sturdy, robust multi-tools, and this latest version, the M13 multi-tool, includes a handy tyre plug tool, along with some tyre plugs.


These are stashed in a case that snaps onto the sidebars of the M13, and there’s a dedicated space inside for spare chain links.

All the main Allen key sizes are taken care of (2, 2.5, 3, 4, 5, 6, 8mm) and the 8mm is a dedicated bit rather than a push-on extra. There are also T10 and T25 Torx keys, plus two Phillips and one flat-headed screwdriver.

It’s a shame there’s no chain tool, though (if you want that and the tyre plug kit, you need the £39.99 M20).

The 85mm length of the body gives a decent amount of leverage. I struggled to loosen 8mm crank bolts (no major surprise) but had no issues when nipping up 5 or 6mm pivot bolts.

The bits are a decent length, too, and I had no problems reaching trickier parts of the bike.

There are five tyre plugs, which is enough to get you out of a bind or two. The tyre plug tool, a two-pronged fork, works well enough, although I prefer the conical style.

Because the tool can’t be locked straight or at an angle, I found it liable to rotate when trying hard to wedge a plug into a tyre.


Crankbrothers M13 multi-tool bottom line

I know Crank’s tools last, and it comes with a lifetime warranty, and the tyre plug kit is a handy addition, too.

Product Specifications


Price AUD $50.00GBP £26.00USD $26.00
Weight 164g
Brand Crankbrothers


Features Tools include: 2, 2.5, 3, 4, 5, 6, 8mm Allen keys, 2 Phillips and 1 flathead screwdrivers, Tyre plug