Shimano Deore XT M8100 Left Front Hydraulic Disc Brake Set model xdurofullsevenrx Wheel on trainers are simple to Wheel on trainers are simple to set up and the Flow’s foldable frame has a small storage footprint Highly puncture resistant casing with Duraskin sidewall protection High mileage carbon black tread compound Continental has changed the name of the Ultra Gatorskin to Gatorskin Brakes are pre bled BL M8100 features a stiffer brake lever design that provides added support for aggressive riding Servo Wave Action technology means quicker brake engagement with shorter free stroke The BR M8100 2 piston brake caliper is optimized for cross country riding styles Includes metal pads and hose The Deore XT M8100 hydraulic disc brake is designed to provide high performance braking for a variety of MTB riding styles