Geology

Big Kahuna

Administrator
Joined
Jan 14, 2006
Likes
7,294
Location
Tuscaloosa, AL
#8
MCR and SIR were the same bike only the SIR bottom bracket was set up for the eccentric bottom bracket for adjusting chain tension. you can convert the SIR to geared.
 

CD155MX

Squirrel!!!
Joined
Jun 10, 2006
Likes
695
Location
Moreno Valley, CA
#9
Anybody looking for a Medium Sir 9 currently setup w/ 2X9? Should really sell it rather than letting it collect dust in the garage. Was wifes old bike, but now she is rocking full squish.
 
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