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


What is the difference between 11r, 10r, 8r, etc. carbon used on different Specialize
#1
What is the difference between 11r, 10r, 8r, etc. carbon used on different Specialized bikes.
  Reply
#2
Jumping into an old post. I was this week googling for an answer to the same question, so here is what I have understood from Specialized website. Perhaps this will help for some other fellow google-cyclists in the future Smile

R level = "level of modulus of the carbon fibers". R value refers to the "stiffness of individual fibers within the carbon matrix", so it the higher R the stiffer and more efficient is the particular carbon material. So, when the level is higher (R11 > R8), they can utilize less material in order to create a Specialized bike frame of the same or higher stiffness. Compared to the frames with less modulus carbon fibers.

Bottom line
Each level or R of the carbon frame takes off 100 to 150, to even 200 grams of weight (11R lighter than 10R or 8R) and at the same time the ride will be either a little bit stiffer or more vibration-absorbing, depending on the type of bike (Tarmac/Roubaix).
  Reply


Forum Jump:

[-]
10 Latest Posts
Doctors are Prescribing Cycling
Yesterday 09:31 PM
How to improve cycling endurance? I've h...
Yesterday 06:27 PM
Hot Weather Safety
Yesterday 06:05 PM
Variation in Conti GP5000 sizing?
Yesterday 05:42 PM
Budget Gravel Bikes - useful YouTube vid...
Yesterday 03:43 PM
Continued learnings from bikepacking
Yesterday 08:37 AM
Cleats idea. What do you think?
Yesterday 08:28 AM
Has anyone tried one of these portable e...
Yesterday 06:43 AM
2007 Trek Pilot S.P.A. 5.2
06-29-2025 09:08 PM
First long distance ride..
06-29-2025 09:45 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. GirishH
21 posts
no avatar 2. Flowrider
19 posts
no avatar 3. meamoantonio
13 posts
no avatar 4. rydabent
12 posts
no avatar 5. enkei
10 posts