Going balls to the wall is fun until you take a corner too fast and end up limping home, resembling a zombie movie extra. To save you from looking like a card carrying member of the undead hordes, Shimano redesigned the Ultegra 6800 Brake Calipers, with plenty of inspiration from the industry leading Dura Ace, to offer improved stopping power, more sensitivity, and smooth, easy action. Traditionally, Shimano's brakes have used a single pivot design, but the Ultegra 6800 uses a dual pivot, which allows the caliper to be placed symmetrically over the tire. Combined with a cable that runs directly out of the middle of the caliper, this gives the 6800 balanced tension, so braking forces are distributed evenly to both sides of the caliper for smoother, more reliable braking. The arms feature a friction reducing twin bearing system that allows them to pivot extremely smoothly, so you get instant and sensitive feedback from even light touches to your brake levers. Shimano also designed the Ultegra 6800's arms to lie closer to the rim, which provides more sensitivity with less effort. Feathering your brakes will be a silky smooth experience, and hard braking won't require the grip strength of a gorilla. Even the new brake cables have smooth low friction design. The Ultegra 6800 is also set up to accommodate thin brake pads, perfect for riders rocking wider 28mm tires.