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Item # CRN000K

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Item # CRN000K

Fix the little stuff

How many times have you thought about putting a multi-tool in your seatbag, tried to shove it in, and then basically given up in frustration? You don't want to buy a bigger seatbag, as that would ruin the aesthetics of your bike, but having been stuck making "that phone call home" on more than one occasion, you know that you need to carry something. Crank Brothers' b8 Multi Tool is one of the smallest around, and has everything to make adjustments to get you back home. 

Crank Brothers crafts its tools from stainless steel — durable, beautiful and resistant to rust, which is important if your seat bag gets splashed by rain during your fall and spring rides. The b8 includes hex bits in sizes: 2.5, 3, 4, 5, and 6, a t-25 torx, size 1 phillips and flathead screwdrivers, and a magnetized bit socket driver. It is very compact and at 144grams, it won't weight your bag down.

The Crank Brothers b8 Multi tool is available in One size and in Stainless Steel.

Tech Specs

stainless steel
1- flathead, 1-phillips
Wire Cutter:
Wood Saw:
Bottle Opener:
Can Opener:
Other Tools:
hex bits: 2.5, 3, 4, 5, 6, torx: t-25, magnetized bit socket driver
Sheath Included:
Claimed Weight:
144 g
Recommended Use:
Manufacturer Warranty:
5 years

Reviews & Community


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Could be great

  • Familiarity: I've put it through the wringer

This tool is very sturdy and has a great feel in your hand. I love the amount of bits that come with it. I ride with a small chain tool so appreciate that this one come without a chain tool, but still has most of what you would need. I really wanted to love this tool and use it long-term. My main complaint is that the rubber piece that holds the bits while not using them is not very tight so the bits have a tendency to fall out. I lost the 4mm this way when I pulled the tool out on the trail to make an adjustment and didn't realize the 4mm fell out. Then I got home and realized it was gone for good. Now that I know they easily fall out, I always make sure I have them all after use. I am usually picking up one or two off the ground each time I use it. It would be nice if the rubber was a tighter fit, or if each bit was held in with a small magnet. That would make it a bit heavier, but would keep everything intact. If you do decide to get this, I would recommend keeping it in a plastic bag in your pack or else you will be searching the depths of your pack for the bit you need.