Like, I will find terms like SM-BB52, BB-RS500, BB-MT501 BB-RS501… And something about "Italian"
Like, bro, I just want a 68mm bottom bracket because mine is wobbly, I don't want to have to go to college to figure this out 😩
by basedchad21
Like, I will find terms like SM-BB52, BB-RS500, BB-MT501 BB-RS501… And something about "Italian"
Like, bro, I just want a 68mm bottom bracket because mine is wobbly, I don't want to have to go to college to figure this out 😩
by basedchad21
5 Comments
Italian is the thread style
Rs501 is just a newer version of RS500, there’s no noticeable difference on the bike.
Other than that, pick one that matches your crank. An RS one if you have a road crank, the SM52 or MT501 if you have a MTB crank.
I was paralyzed by all of this fairly recently when trying to find a replacement crankset for my bike that had an existing square taper bottom bracket. I kept trying to find a crankset to fit the existing bottom bracket, and was paralyzed by all the possibilities. Then I realized I was going about it entirely the wrong way. What you want to do is pick the crankset first, **THEN** buy a new bottom bracket that fits the new crankset. In my case, it was an [english threaded BSA bottom bracket](https://a.co/d/guF4l2a). By initially trying to **NOT** replace the bottom bracket, I was making things too difficult to find a suitable crankset replacement. Once I let that notion go, it made things much easier.
I would advise you to take the same approach and start with the crankset, then find the BB that works.
No you just need a hollow tech 2 English thread. Can’t mess it up. The exact model does not matter they are all compatible.
If you go to a bike shop they can sort you out- do you have the appropriate tool for this or were you just planning on sending it with a set of channel locks? Once you have the right bit, make sure you note the handedness of the threads when installing- the drive side of the bottom bracket will be left hand thread for English BB.