SHIMANOShimano Shimano

I have been keeping my 2009 GT Expert Road Bike with a Shimano Ultegra 6600 Drive Train going for a long time now. I ride 20 miles a day (weather permitting). I have had to replace most of the common maintenance items. The bottom bracket has lasted a good 10 years now, but it finally went out. I noticed the crank arm was loose when pedaling. Confirmed upon removal, one of the bearings was dried out. It was a actually very easy job. I pushed out the old bearings with a socket and extension. Then I pressed fit them in with this inexpensive tool I bought here at Amazon. https://www.amazon.com/dp/B0BFCXG7HX?psc=1&ref=ppx_yo2ov_dt_b_product_detailsAnyway, I thought I'd share what little info I have regarding this item and what the specs of the actual product I received are. The questions & answers section makes this VERY confusing. Some say it is for a Mountain Bike and others say a Road bike. The BB-92A is the mountain bike and the BB-92B is the road bike. Since they are both 24mm crank diameter, they can be exchanged if you have the old tube.The SM-BB92-41B is for an 86mm frame width ROAD BIKE. (I previously used the SM-BB91-41B so I know it also works the same and is probably it's predecessor.)ACTUAL SPECS24mm diameter where the crank pushes in.41mm frame hole diameter86mm frame width pedal to pedalI took pics of my old one with a digital caliper just to show what is being measured. Hopefully it helps someone who was as confused with listing as I was.

It works fine, I had looked at several options and when I chose this one I thought I was getting a packet with a few in it. For the price there are better deals. You get one with this. No issues receiving or with the product.

Sturdy and perfect fit

They were the authentic replacements for what I needed to do with altering the length of a set of hydraulic brake cables. And by altering I mean shortening. Easy to fit, snug connection, no leaks so far.Happy.

Great buy