Good bottom bracket and was delivered on time…

At first I felt like it was a good quality BB, however feels completely shredded after less than 300 miles. Not sure what the standards are these days but it lasted less than the Shimano $15 comparable. Just my 5 cents.

worked great

I've purchased the sl55 before for both repairs and restoration upgrades. These have performed as well as "name brand" components.

creaking with not even 2 months of use but i don't foresee them failing anytime soon

great cheap BB. solid, silent, and smooth. used this to replace a super noisy origin8 BB.

This was exactly what I needed to replace the old fashioned axle and bearings on a 1980s Mongoose mountain bike. Installation was simple and now my bike pedals very smoothly.

Works well once I got it installed.I have an almost 30 year old mountain bike that had bad, old fashioned, bottom bracket bearings. I've had problems with the cups coming loose, and the bearings having grit in them among other things. I like the bike, and it still works well overall. I see no reason to get rid of it and get a new bike when I could fix this problem.The hardest thing for my was getting the pedal cranks pulled off the square taper shaft. I bought a puller, and got one side off easily, but the other refused to budge. It stripped the threads inside the crank opening. I managed to get a thin wrench in there and unscrew the bearing cup so I could remove the old shaft. I didn't want to replace the cranks as well, so I still had to get it off. I wound up supporting the crank and chain rings as best I could, and using a large punch and hitting it several times, pretty hard, with a hand sledge. It FINALLY came off.One problem I had with installing this was my frame is steel alloy, while the cups on this bracket are aluminum. Even though I thoroughly greased them with anti seize lube, it was almost impossible to get them to thread in straight. The aluminum threads on the bracket got damaged quite easily and I found myself with a small pile of fine aluminum shavings after a few attempts. I FINALLY got it in straight, and it screwed down solidly. The threads I had damaged were screwed well past the threads on the frame by the time I got it in, so I'm not worried about them now. Be aware if you have a steel frame bike that you might easily damage the threads on this bracket. I wish I could have gotten a steel cups version, but this was the only one of the right size I could get delivered in enough time to install before our vacation where we would be riding bikes a lot. I don't blame the bracket for this, but just be aware you might have problems like I did. I don't expect to ever have to change this one out. If I do, then it'll be time for a new bike.This bracket also wasn't quite centered in the same spot as my old one. The chain rings were a couple millimeters different distance from the frame than on the old one. I forget which way it was off now, but the chain wouldn't go onto the ring at one extreme, and would drop right off the ring at the other extreme. My front derailleur isn't indexed, so simply adjusting the travel limiting screws fixed this. On a bike with an indexed front derailleur, you'd probably also have to adjust the cable length a bit. I didn't have to because I had enough extra movement in my system to make up the difference.Make sure you are getting the right size of this for your bike. The 68 is the diameter of the tube in your frame this screws into (where the pedals are) in millimeters. The 127 is the length of the shaft from the tip of one square shaft to the other.