Want some Dura-Ace brake action without a Dura-Ace price? Using Dura-Ace's pro-level technology with a very slight weight sacrifice, Shimano's Ultegra BR-6800 brakes use a symmetrical dual pivot design so that each arm travels the same amount when the lever is squeezed. Couple the resulting efficiency and superior modulation with Shimano's exclusive new pad compound, and the result is a powerful brake that won't grab, won't overslow at critical race moments, and will stop when you say stop.
BR-6800 has 10% more power in the caliper than their 6700 counterparts
equal tension to both arms equals predictable, smooth modulation
aesthetic makeover makes Ultegra look Dura-ace good