Konaman Posted March 20, 2010 Share If i use the Shimano XTR 975 front brake caliper on the rear end of the bike, does it require a 140mm rotor? I would like to use a 140mm rotor on the rear post mount of my bike. pls advise! Link to comment Share on other sites More sharing options...
techguy Posted March 23, 2010 Share If you are using the IS mount then yes you can use the front caliper on the rear with a 140 rotor, there is printing on the caliper stating that the caliper is 160F/140R...if its a post mount then it won't be a problem either, just get the adapter braket for a 140 rotor... Link to comment Share on other sites More sharing options...
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