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


Crank bolt sizes
#1
Hi, bit of a newbie to bike repair. I'm looking to change the front gears on my mountain bike. I've got the correct crank pulling tool, unfortunately I don't have the correct socket to remove the crank bolt. The bolt is bigger than the 14mm socket but smaller than the 17mm. Are there standard sizes of crank bolts (this is a Shimano gear-set, bike bought in the Netherlands, roughly 5-10 years old)? If so what is the most likely size I'll need to buy?
  Reply
#2
OK, if the crank set is Shimano, then the removing tool will fit the cranks (but not necessarily the bolt... been there). The bolt could be 15mm or 16mm, a regular 16mm nut will not fit inside the hole in the crank. The tool to remove small spark plugs could fit (it is 16mm), it did for me. Some bike shops have 15mm and 16mm nuts that are turned down to fit inside the crank hole.
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
6,080
01-02-2022, 04:53 AM
Last Post: Jesper
 
36,048
07-19-2021, 12:00 AM
Last Post: rbx
 
4,020
06-24-2020, 04:13 PM
Last Post: CharleyFarley
 
25,518
12-13-2019, 09:53 PM
Last Post: RJD
 
16,513
03-21-2016, 02:29 PM
Last Post: budstutor
 
6,779
07-21-2014, 09:52 PM
Last Post: Painkiller
 
12,359
04-17-2014, 09:16 AM
Last Post: nfmisso
 
13,531
02-09-2014, 04:52 PM
Last Post: cny-man

Forum Jump:

[-]
10 Latest Posts
Safest bike helmets
Today 10:13 AM
Braking: What is your GoTo braking metho...
Today 09:54 AM
Tour de FRANCE 2025
Today 08:57 AM
Tubeless vs. tubes: What are the pros an...
Today 02:23 AM
Pros & Cons of presta valve vs schrader ...
Yesterday 11:58 AM
Raleigh Sports Serial Number
07-09-2025 11:10 AM
The great thing about trikes
07-09-2025 10:12 AM
Full Moon Ride - Sunshine Coast
07-08-2025 10:46 PM
Continued learnings from bikepacking
07-08-2025 10:40 PM
What are the pros and cons of using a 26...
07-08-2025 10:35 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. Flowrider
23 posts
no avatar 2. GirishH
22 posts
no avatar 3. meamoantonio
18 posts
no avatar 4. enkei
15 posts
no avatar 5. Jesper
14 posts