Shimano r785 805 hydraulic di2 disc brake this high quality disc brake set is specifically engineered for road use as it gives you smooth and reliable stopping power. It features some of the best technologies around, so you can tackle whatever obstacles come your way when navigating around the urban landscape. Using free stroke technology, it allows you to adjust the distance from the initial lever position to the pad contact point for a natural hand position. Its advantageous hood position lets you apply higher braking power with less effort, making it ideal for cyclocross riding. This hydraulic model is an excellent choice of upgrade for riders who want to stay at the top of their game. Features   use cyclocross, road   speed 11 speed   versatile and effortless operation   fits any hand size   reach adjust   weight 500g pair approxtechnologies   shimano electronic intelligent system the seis innovative shift technology is still based on the shimano index system sis that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics.    servo wave action when you pull a servo wave brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad to rim contact so more of the lever stroke is used to apply greater braking power with improved control.   free stroke the distance from the initial lever position to pad contact point can be adjusted to suit any hand size, type of riding and individual rider preferences.    reach adjust brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences. A 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.