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


Bottom bracket and rear derailleur hanger
#1
Hi everyone, i got a new frame 2001 Specialized S-Works M4 hardtail and i'm going to build up but i need some help. Can someone tell me what size bottom bracket i need and the rear derailleur hanger size. oh if someone knows where i can find specifications about this frame? thanks appreciate
  Reply
#2
This should be what you need for a der hanger:
[Image: DerailleurHanger4271_d.jpg]
part no. 989-4271 or 989-4275

BB size depends a bit on whether you want to do standard (geared) build or do a single speed build.
  Reply
#3
hi awmeat thanks for you help with the rear derailleur. for the bb i'm going to do Standard geared 3 chain ring.
  Reply
#4
The BB thread should be BSA (British), the shell width is most probably 68mm you should measure this, though. The spindle length depends on the front derailleur / and crank you want to use.
  Reply
#5
thanks joe
  Reply


Possibly Related Threads...

Forum Jump:

[-]
10 Latest Posts
Andre leducq bike. Any idea on value
Today 08:59 AM
Newbie here, just introducing!
Today 08:53 AM
Can’t explain why, but night rides feel ...
Today 08:51 AM
Some mountian biking tips I've got from ...
Yesterday 11:23 PM
How new adventures begin..
09-08-2026 03:01 PM
Vintage (and mint) Torelli...unknown yea...
09-07-2026 06:32 PM
Hoping someone can help me identify this...
09-07-2026 05:42 PM
What bike is this
09-07-2026 05:22 PM
Shortness of breath.
09-07-2026 04:55 PM
trace - what used to take several apps a...
09-07-2026 03:16 AM

[-]
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. Flowrider
24 posts
no avatar 2. GirishH
19 posts
no avatar 3. SPINMAN
14 posts
no avatar 4. froze
11 posts
no avatar 5. Sidewinder
10 posts