Trek 1x Conversion
10-21-20, 07:04 AM
#1
Junior Member
Thread Starter
Join Date: Apr 2012
Posts: 17
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 9 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Trek 1x Conversion
Hello,
I am looking to upgrade my old mountain bike to a 1x setup. The first thing is finding a compatible bottom bracket, I will attach a picture of my current one. I would like a Shimano setup, doesn’t need to be anything too fancy. Any help finding these items would be great.
Thanks
I am looking to upgrade my old mountain bike to a 1x setup. The first thing is finding a compatible bottom bracket, I will attach a picture of my current one. I would like a Shimano setup, doesn’t need to be anything too fancy. Any help finding these items would be great.
Thanks
10-21-20, 08:12 AM
#2
Senior Member
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 5,925
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 1819 Post(s)
Liked 1,693 Times
in
974 Posts
Choose the bottom bracket after you choose the crank, not before. The crank you buy will determine the spindle length and type you need
Last edited by alcjphil; 10-21-20 at 08:31 AM.
Likes For alcjphil:
10-21-20, 09:22 AM
#3
I'm good to go!
Join Date: Jul 2017
Location: Mississippi
Posts: 14,985
Bikes: Tarmac Disc Comp Di2 - 2020
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 6193 Post(s)
Liked 4,808 Times
in
3,316 Posts
That BB tends to indicate that your shell is BSA threaded 1.37"x 24 tpi and 68mm wide. I'd verify the width by measuring the bb shell though.
Look for a groupset that has a crank you like that also has a BSA threaded BB as one of it's options. There are many of them. I prefer two piece cranks. But I've always used road bikes with road groups. But in mountain bike groups you'll be able to find plenty of 1x groups. If you can't go two piece crank, I'd at least get ISIS or Octalink. It'll leave you with less specs to worry yourself about than the square taper bb.
Look for a groupset that has a crank you like that also has a BSA threaded BB as one of it's options. There are many of them. I prefer two piece cranks. But I've always used road bikes with road groups. But in mountain bike groups you'll be able to find plenty of 1x groups. If you can't go two piece crank, I'd at least get ISIS or Octalink. It'll leave you with less specs to worry yourself about than the square taper bb.
