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Can you use a 203 mm disc brake with a Rocky Mountain Trailhead mountain bike?

I was wondering if i could use a 203 mm disc brake caliper like the Avid BB7 203 mm with the Rocky Mountain Trailhead bike:

http://www.bikes.com/main+en+01_102+TRAILHEAD.html?BIKE=913&CATID=1&SCATID=2&Y=2011

The front suspension fork is a RockShox Tora TK coil.

Thanks in advance.
Sorry, I meant to say brake rotor not caliper.

The caliper is the same for any size rotor, it is the adapter that changes. The bike you have chosen does not need a 203 mm rotor unless you are thinking of using it as a downhill bike and if you do so you will void all manufacturers’ warranties and not be covered if something breaks. Stick with the standard size rotors if you don’t want to break things

BB7 Road Disc Brake Test


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