This pre-bled brake system is ready to install with Shimano XT M785 Servo Wave levers, hydraulic lines, and M785 disc calipers. The XT M785 disc brake levers offer improved ergonomics, quicker engagement, and 20% more stopping power. Separate reach adjustment and free stroke adjustment allow you to customize levers for hand size and comfort. The XT M785 disc brake calipers get upgraded with Shimano's Ice technology, featuring radiator backed metal pads and oversized 22mm ceramic pistons. Sold as front or rear. Rotors not included.