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Decathlon Btwin Hollowtech II Bottom Bracket Tool

Sale price: $6.00 Regular price: $19.99

An excellent crank arm thanks to its 11" length, the key benefit of this Hollowtech bottom bracket is that it surrounds your entire bracket for better support and prevents the bracket from deforming.

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Sale price: $6.00 Regular price: $19.99

Free shipping over $49

Final Sale: No returns or exchanges

Free returns

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8402079

Product Features

A photo of the Decathlon Btwin Hollowtech II Bottom Bracket Tool in use
A photo of the Decathlon Btwin Hollowtech II Bottom Bracket Tool in use

Decathlon Btwin Hollowtech II Bottom Bracket Tool | We've designed this tool for removing and fitting Shimano Hollowtech II bottom brackets and similar with 16 external notches.

An excellent crank arm thanks to its 11" length, the key benefit of this Hollowtech bottom bracket is that it surrounds your entire bracket for better support and prevents the bracket from deforming.

Compatibility

For Shimano® Hollowtech II-type bottom brackets.

Easy to use

11” crank

Durability

Holds the entire bottom bracket at 360°, limiting damage.

Weight

Weight: 11.7 oz.

Questions & Answers

Product Customer Reviews

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308 Reviews
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Useful tool

Useful tool

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flawless

works perfectly and at a good price

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for pedalboard but perfect…

for pedalboard but perfect for disk center look nuts, you simply have to cut a few centimeters of the plastic covering of the key so that it remains parallel to the disk

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The wrench is quite wide, when tightening the centerlock discs, you need to keep the wrench as close to the disc as possible very precisely, and due to its thickness, this is not easy.

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👍

👍

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Ideal product for dismantling…

Ideal product for dismantling cranksets, regarding the center lock discs, I followed other advice in the comments which said to cut the plastic of the handle.

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A little too thick...

A little too thick too bad

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Pay attention to compatibility!

Excellent tool but as mentioned in other comments, if you want to use it for the center lock nuts of certain brake discs, you realize that the thickness of the handle prevents you from correctly positioning the tool on the impression ... Not much is missing but that makes the operation impossible without damaging the equipment. So, this tool only works for bottom bracket cups as is. We must therefore hope for a finer corrected version to correct the problem. For my part, rather than roughly trimming the handle with a cutter, I preferred to buy a second very fine tool on the internet…

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Hollowtech 2 bottom bracket key

Does the job and practical ergonomic handle

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OK

What I needed, everything OK

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Good value for money

top

In the top

In the top

Not suitable for centerlock discs

The rubber handle creates an extra thickness preventing the key from being positioned parallel to the ring. Result only 1/3 of the teeth is in good contact with the notches…. For a 40Nm fixing, forget it... I slipped 3 times and damaged the ring 🥲 With the key purchased from a bike shop: no problem!... Design error for a standard Hollowtech key supposed to work for cranksets AND centerlock discs

Good key with Good…

Good key with good grip

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Practical but not in all situations

I used it to disassemble a Hollowtech II bottom bracket and then to reassemble a new one. Fits well in this situation. On the other hand, a small downside if you just want to tighten the bottom bracket, the fact that the tool is "closed" means you have to dismantle the cranks. If the tool were "open" like a wrench, there would be no need to disassemble the cranks. Second downside, for the assembly or disassembly of a hollowtech standard lock ring which places a pinion or a brake disc, the plastic which covers the handle rises too high and prevents the key from being properly placed around the lock ring.

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Additional Product Information

Composition

Structure: 100.0% Steel ; Handle: 100.0% Polypropylene

Dimensions:

Length: 280 mm.Weight: 11.7 oz.

Compatibility:

Shimano® Hollowtech IICampagnolo® Ultra Torque and Power TorqueRace Face X-typeFSA Mega-ExoTruvativ® GXP, Sram®, GXP and similar with 16 external notches.

Origin

Imported

 

Size Guide Visual

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