Review of Shimano BB-ES25 Octalink V2 Bottom Bracket

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I had to replace the bottom bracket on my 2010 Hardrock because it was creaking, so I got this one, which is what came stock on my bike.

Well, it worked fine for maybe a month before it started creaking like the old one.

If you are thinking about replacing your bikes bottom bracket by yourself and are thinking about this one, don't get it. Save time and money and invest in a good external bottom bracket, and possibly a new crankset.

I thought replacing mine with this one would last at least a year. Nope. It really is that bad.

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Needed a bb for an old alivio octalink crankset that was going on a bike with a smaller bb shell. Not a huge fan of octalink, too heavy but much better than square tapers.

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Bearings started to squeak in the first month. Now they are so loud I can't concentrate when I ride. Unfortunately I can't find the same size in any other model so I have to buy another one hoping it won't cheap bearing like my last one.

Update:I am an idiot. Played the odds hoping I would get a good one. Third time is not a charm. These ES25's are junk. The third one started to creak on the first ride. I don't want to drop another $50 to change crank styles so I am going to try the ES51. If this fails I will never use Shimano crap ever again. SRAM is the way to go. I have converted all my other components to SRAM accept the crank and BB. Shimano Sucks.

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this was replacement from old BB only reason decided to replace it was due to new crank. nonetheless unit went in w/out any problems on my Mongoose Otero Pro., crank mated w/ out any problems. so far been enjoying the set up.

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This thing is awesome!! I'm about 4000 thousand miles in with this BB and it's still going strong..I ride a 52 tooth chainring and hang out in the 18th,19th teeth out back and I generate alot of torque and this BB has taken everything I've given it..This is my first experience with a splined BB and so far no complaints whatsoeva and for the short money this thing costs,how can you beat it??? Highly recommend