Rotor sizing
#1
Thread Starter
Junior Member
Joined: Apr 2017
Posts: 6
Likes: 0
From: Purdue University
Bikes: 2013 Specialized Rockhopper
Rotor sizing
Hey yall
I am putting a new shock on my ROckhopper 29 and am going to need an adaptor for my front rotor or a new rotor all together. Will dropping the size of my front rotor from 180 to 160 really make any difference I know that the back rotor is already a 160. Just curious of geometry here and trying to get a feel for average size of front rotors
I am putting a new shock on my ROckhopper 29 and am going to need an adaptor for my front rotor or a new rotor all together. Will dropping the size of my front rotor from 180 to 160 really make any difference I know that the back rotor is already a 160. Just curious of geometry here and trying to get a feel for average size of front rotors
#2
Senior Member

Joined: Dec 2004
Posts: 12,548
Likes: 797
From: Middle of da Mitten
Bikes: Trek 7500, RANS V-Rex, Optima Baron, Velokraft NoCom, M-5 Carbon Highracer, Catrike Speed
The 160 is the most common size, and works for most applications. Both of my lowracers use 160mm rotors on the front.





