This precision-engineered bike crank arm cap removal tool is designed specifically for SRAM DUB/BB30 and Shimano XTR M9100 systems. Featuring an 11-notch design machined from durable aluminum with a striking blue anodized finish, this specialized tool ensures proper grip and torque application when removing or installing crank arm caps. The tool's ergonomic design prevents slippage during use, while its compact size makes it perfect for both home mechanics and professional bike shops. Compatible with modern crankset systems, this essential maintenance tool helps protect your valuable components during service. The clearly marked directional arrows ensure correct installation and removal, preventing potential damage to your bike's components. Keep your bicycle running smoothly with this professional-grade workshop tool that's built to last.

Kevin –
Nice specialized bike tool for anyone with SRAM cranks
Is this a must have bike tool, probably not, but boy does it make life a lot easier. I’ve removed my SRAM BB30 cranks from my MTB numerous times without a specialize tool and it works ok with a standard adjustable spanner wrench if you can find one with small enough pins; but you definitely need to be careful while doing it since you only engage with 2 of the 4 holes on the cap. This tool is so much more user friendly to use while servicing your BB. The 4 pins engage securely with the cap and I love that I can now use a 3/8 ratchet with the tool and properly torque the cap as part of my service (I’ve lost one of these on the trail before!).
TimR –
If you have DUB and ever take the cap off, you need this. Not just once
In my experience, the DUB crank bolt removing caps never stay tight if they ever come off (and sometimes just because). Having the right tool handy is critical to keep it on.Do keep in mind that the torque goes through tiny little pins. I’m sure they won’t survive excessive force. But most of these work that way.
Amazon Customer (comprador verificado) –
Verify fit for SRAM crank
Self self-extracting cap on SRAM cranks is curved so the tool does not sit flush and slips. Pins bent easily and scratched the crank and cap.
mark cunningham (comprador verificado) –
Does not work on Shimano
Does not fit Shimano pin or star caps
Michael D. Yaeger (comprador verificado) –
Great
Excellent quality and fit
chase (comprador verificado) –
Pins Too Short For SRAM DUB
Pins are too short and will scratch the surface of your crank. DO NOT USE THIS TOOL ON A SRAM DUB BB
Miguel G. (comprador verificado) –
Find Another Tool
First use and two of the four pins bent. I was able to still use it but the quality is not good. I would recommend looking for another tool instead.
JM (comprador verificado) –
Don’t buy weak all teeth will break.
Poor quality. it needs to be made of steel. Aluminum with such short contact surface will just failk.it can’t handle the torque this the cap requires. not the shimano nor the DUB sram.
Panda –
The best version of this tool with very one minor flaw
RISK did an absolutely fantastic job with the design of this tool. I have only one complain, which I’ll address first: it’s aluminum, and not at all magnetic! As such, it can’t go on my magnetic trays along with my other cap and cassette removal adapters. I’ve stuck it on my socket adapter set for now, but the solution may be to grind down one side and attach an earth magnet using epoxy. I can understand why they went with aluminum to keep weight down and for anodizing/markings.The two removal sides just work. What’s surprising is how they managed to make BOTH orientations compatible with either a 6mm Allen key or a 3/8″ anvil. Yes, the anvil does seat on the 4-pin side without any extensions. Someone clearly thought out the design for this, and deserves a raise, because this is one of the better designed adapters I’ve ever seen.
Amazon Customer (comprador verificado) –
Tried to sell me a used and defective item. Waste of time.
The item shipped to me has obviously been used. Complete waste of my time. Plastic package was open, pins are bent and anodizing is scraped off where ratchet drive goes in.