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Your cart is empty. Use the trusty Shimano/ISIS Bottom Bracket Tool to service or replace your ISIS bottom brackets without screaming or needing the assistance of your local mechanic.
Product Features
- Material:
- Compatibility:
- Other Tools:
- Weight:
- Recommended Use: working on your bike
- Manufacturer Warranty:
David Vick Jr.
Reviewed in the United States on March 5, 2025
Great machining. Thank You
gunther
Reviewed in the United States on February 2, 2025
Park quality
Roland N
Reviewed in France on December 3, 2024
Outil indispensable si vous entretenez et réparez vous-même votre vélo. La qualité est bonne pour un usage domestique. Pour un usage professionnel, je n'en sais rien, mais la robustesse semble rassurante.
Vanessa Bell-Cortinaz
Reviewed in the United States on December 23, 2024
Special tool for bikes are hard to find at any tool store. Special tool! Special order! Thanks AMAZON PRIME!😮💨
Boneshaker
Reviewed in the United States on October 21, 2024
There's not a whole lot I need to say about this. It's solid, it doesn't strip, it doesn't slip, it is a solid metal tool that as soon as you hold it you can tell it is better than anything else out there. It's not 3D printed, it's not made of some crap alloy, it is solid and you would have a hard time breaking it. Right now on Amazon Park Tool is one of the few companies that you can say all of that about their tools almost all the time. Did you get that Amazon tool sellers? Step it up!
Edward McDonald
Reviewed in the United States on January 12, 2024
Item was sent out quickly, the next day, but that's not what make me glad that I purchased this item. The other tools I purchased as a combo was not up to par and I couldn't get the bottom shaft out as it couldn't grip the gear. This tool was deep seated and able to turn the gear shaft with no problem. Definitely worth the extra coins to have the right tool for the job.
James S.
Reviewed in the United States on December 5, 2023
Well, I broke the first one. The Bottom Bracket was really tight and I did not bolt the tool to the BB Axle using the Crank retaining Holes. The tool slipped, broke out the plastic BB retainer on the non drive side, and the tool cracked. I managed to get that side out after bolting the tool to the crank Axel and using a 1" deepwell socket and a 1/2" drive ratchet. The tool disentegtated while trying to remove the Drive side BB retainer. So I ordered a new Tool. This time I bolted it down, used the 1" deepwell socket and added a 30" breaker bar. I also took the Bike out of the maintenance stand and set it on it's wheels. The retainer came loose,reluctantly, and the tool survived. Also make sure to clean the dirt out of the splines on the retainers. Also remember, as the bike is sitting on the ground the right side turns clockwise to remove it. On the left side of the bike turn it counter clockwise to remove it. Suggest that you watch a few videos if you are a rookie.
Norwegian Wood
Reviewed in the United Kingdom on September 30, 2018
After over 10 years! it was finally time to (well overdue) to change the bottom bracket on my spare GT hybrid bike.After reading reviews, and also previous experience with ParkTool I went for this tool. Now I did not read the description well enough, and was expecting that it had a 1/2" driver for my wrench. I do not have a 3/8" driver, nor a 1" socket. Luckily I have a ParkTool chainwhip, which I ended up using. Lots of lubricant. Boy...that was tight. I ended up using a hammer as a a last resort, which worked!.Same method applied on other side. And I did get the old rusty Truvativ bracket out. Slight bending of pins in the bottom bracket, but the tool appear absolutely fine.I guess it is quite expensive compared to alternative brands which I have not tried. Bought this anyway as I would have been more annoyed with myself if a low quality tool had damaged the fittings.Now to get a new bottom bracket, fit it, and chances are that the tool will end up in my toolbox never to be used again...
Claudio
Reviewed in Italy on May 23, 2017
Poco da dire, fa il suo lavoro e si spera che sia di materiale buono da non rovinarsi col tempo: purtroppo (o per fortuna) l'uso è saltuario, quindi ci vorranno anni prima di saperlo :-)
s-rainer
Reviewed in Germany on November 8, 2017
Das Konstrukt ist an sich sehr gut, ist ja auch ParkTool. Ohne ein solches Teil ist die Demontageeines Innenlagers nicht möglich. Positiv ist der kurze Hals. Dadurch kann besser Druck aufdas Lager gebracht werden. Man rutsch nicht so leicht ab, da die Kraftübertragung dicht am Lagererfolgt. Auch mit diesem Schlüssel sollte das Lager bei demontierten Kurbeln über 1, besser 2 Tagemit einem guten Kriechöl eingespüht werden. Dies ist wirklich hilfreich.Leider empfinde ich das Material, zumindest im Bereich des Kranzes, als etwas weich.Es hat bislang 3 Lager überlebt.
Dragan Celan
Reviewed in Canada on June 18, 2015
I installed my new Shimano sealed cartridge bottom bracket today and the tool worked like a charm. It doesn't show in the picture but it says in the description, you don't even need a wrench or a socket. You can simply used a 3/8" drive ratchet to use the tool. Doesn't get any better than that.
L. Dyer
Reviewed in the United States on August 16, 2013
I used Park Bottom Bracket tool to replace the square taper sealed cartridge type bottom bracket on my Mercier Galaxy SC1 14-speed road bike that began making creaking sounds when I pedaled after just 3,000 miles. The park BB tool offers a wide variety of turning options. The end of the tool has a slot for a standard 3/8" socket driver and it can also be turned using a 32mm or a 1" socket or wrench. The 32mm or 1" ends are ideal to use with a 1/2" breaker bar and socket for added leverage when removing difficult bottom brackets. The larger ends placed near the head makes it easier to center the tool while turning it and applies torque to the head of the tool instead where it's needed, instead of the end. The 3/8" slot can be used to tighten it with a torque wrench to avoid stripping the threads and ensure the bottom bracket is torqued to the proper spec. The teeth on the Park tool did begin to slightly show wear after just one use. I'm not sure it will live up to the 'shop quality' claim in the description, but it should be durable enough for occasional home repairs.
Two Wheels
Reviewed in the United States on June 15, 2009
Park Tool is widely regarded as the best bicycle-specific tool maker. This bottom bracket tool, essentially the socket end of a 1/2" drive socket wrench, makes it easy to see why. It's splined to fit Shimano sealed cartridge bottom brackets, just like a very similar socket I have from another manufacturer. The crucial differences are two: fit and contour. The tool snaps very precisely on to the bottom bracket, making easier work of a removal job that can be difficult due to overtightening or seized threads. Just as importantly, the top of the socket is contoured so that if the drive handle is providing insufficient leverage to do the job, one can fit a box end or open end wrench over the hex-shaped top of the socket. This makes possible the "desperation method," in which the socket must actually be bolted to the spindle of the bottom bracket and then turned a little at a time (often with much swearing, cheater pipes, etc). In the "seriously desperate" version of the desperation method, the tool can be bolted to the bottom bracket spindle and then clamped into a vice, with the entire frame being turned as a lever to move the seized threads. The shape of this tool makes that clamping possible.If you have to do this, make sure to treat yourself to a beer or similar reward afterward. But with this tool, you can! If you're blessed not to need that method, this tool will work exactly as it should anyway, and for years to come.
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