When it came to hydraulic and disc brakes for cross we were hold outs for sure! To offer a hydraulic system we had to be convinced and the TRP Hylex RS has proven itself over and over. TRP is a small company compared to the likes of Shimano and SRAM but they also specialize in braking unlike the big guys and it shows! TRP Hylex are just a better brake and that is why they are used to build this system. Smarter design The master cylinders for this system are self contained units that are nestled inside the brake lever bodies. If you should crash out a lever chances are the master cylinder will be undamaged. This makes so much sense we just can't comprehend why the other companies don't offer the same level of design. With this in mind we are able to provide a crash service of just $84 per side. No matter how badly you crash, smash, wallop and destroy these units we will get you up and running again for a maximum of $84. That covers the whole unit right down to the caliper. Upgradable Running 10 speed now but might upgrade to 11 speed down the road? No worries as this system is part of our GX shifting system the shift levers can be swapped out to do just that! Flat mount version compatible with Shimano K02S/K04S pads