How to Trim a Brake
Hydraulic brakes are the best way to slow your bike on the trail; however, they’re intimidating for many riders who insist that cable-actuated brakes are more reliable and
easier to work on. In reality, hydraulic brakes are more reliable
and easier to work on than any cable-actuated brake system.
Nearly every new bike comes with hoses that are longer than
what’s actually needed. While hydraulic brakes don’t necessarily
need to be trimmed to function properly, there’s no reason to have
loops of excess brake line hanging off your bike, waiting to snag
on branches and send you promptly to the ground. It’s an easy
procedure to trim your lines down, and the steps are nearly the
same on every major brand of brakes out there. We’ll show you in
this month’s “Garage Files” why there’s no excuse for riding with an
extra “squirrel snare” of brake line hanging off the front of your bike.
We’re going to shorten the rear brake hose on our Intense Recluse
bike, which uses SRAM Guide RS brakes. It should be noted that
before you try this procedure, it must be done cleanly, or your
brakes will need to be bled afterwards. Take caution if you have
little or no experience with hydraulic brakes.
Use an 8-millimeter open-ended wrench to loosen the
compression nut. This should not be a very tight nut and should
break free relatively easily.
Once broken free, you can use your fingers to spin the nut
completely free. Once completely unthreaded, slide it down the
hose and out of the way with the rubber cover.
Begin by removing the rubber piece that covers the brake-hose
compression nut, and slide it down the hose and out of the way.