Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.


Specialized Tarmac
#1
Hello all,

I was looking to replace the BB on my 2010 Specialized Tarmac. I found some description on the BB that reads BC1.37x24. All I know is its a BB30 external bearing type. I wanted to install a ceramic BB from first components but not sure what size to order. Going to pair it up a Shimano Ultegra 6700 Crank. Any help would be great.
  Reply
#2
MAybe this will guide you in the right direction!
http://www.bikeforums.net/archive/index.php/t-298772.html
http://weightweenies.starbike.com/forum/viewtopic.php?t=41819
Good maintenance to your Bike, can make it like the wheels are, true and smooth!
  Reply
#3
Hi - did you ever figure out if its Enlish and what the measurement is (68mm vs 73mm)?

Thank you.


(04-08-2011, 07:54 AM)Groovejet Wrote:  Hello all,

I was looking to replace the BB on my 2010 Specialized Tarmac. I found some description on the BB that reads BC1.37x24. All I know is its a BB30 external bearing type. I wanted to install a ceramic BB from first components but not sure what size to order. Going to pair it up a Shimano Ultegra 6700 Crank. Any help would be great.
  Reply
#4
English thread for sure, it's a Specialized!!!

30mm x 42mm x 7mm i what your looking for... Usually BB30 bearing is a 6806 you gant order at any bearing shop...
  Reply


Forum Jump:

[-]
10 Latest Posts
How I used to clean my bike
Today 10:43 AM
Continued learnings from bikepacking
Today 04:50 AM
What are the pros and cons of using a 26...
Today 04:46 AM
I got new Tioga FASTR X Tires (Ask Me An...
Today 01:31 AM
Cassette shifting Problem
Today 01:06 AM
Attack // Force tire style narrow front ...
Today 12:55 AM
Gandolfi "Super" model 1985-86 racing bi...
Yesterday 01:10 PM
The great thing about trikes
Yesterday 11:10 AM
Doctors are Prescribing Cycling
Yesterday 10:40 AM
How to improve cycling endurance? I've h...
06-30-2025 06:27 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. GirishH
21 posts
no avatar 2. Flowrider
20 posts
no avatar 3. meamoantonio
14 posts
no avatar 4. rydabent
12 posts
no avatar 5. Jesper
11 posts