Originally Posted by
jignall
i have a 2008 trek 520 with V-brakes - i'm over them. it looks like the frame is drilled for caliper brakes but i don't know which reach i should be getting? maybe someone out there knows? if not, how would i go about measuring the reach i need?
Take a caliper or divider and measure from the mounting hole in the fork and the rear brake bridge to the centre of the brake track on the rim.
Since it comes stock with stock 32mm tires, I'm guessing it will take at least a medium reach brake, probably around 57mm.