Originally Posted by
The Golden Boy
Aside from being a 'Trek purist,' which, I guess I sorta am...
Is this a good idea?
I mean, the bike is engineered for the braking force to be applied and distributed at the brake bridge, not one seat stay.
The fork would need to be designed with disc brakes in mind. This would mean either an aftermarket fork (if you can find a disc-capable fork with a 1" steer tube; I've never looked), or a new, custom fork designed to take a disc brake.
The rear brake takes far less load than the front, and the rear triangle could be gusseted to reinforce it for the disc brake.