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SHIMANO "DUAL PIVOT" SIDE-PULL BRAKES - An OverviewIn Shimano's Dura-Ace, Ultegra, and 105 SC series brakes, there exists a "Dual Pivot Brake". It's a side-pull brake. These brakes have three arms that form the caliper. The arm nearest the bike (1) which is held in place by the pivot bolt serves as a mounting for the arm farthest from the bike (3). Between these two is another arm (2) held in place by the pivot bolt. Arm 2 works just the way the short pivot arm has always worked. Arm 3, holding the brake pad, has a pivot bolt half way between the traditional brake and the brake pad, which is fixed to arm 1. Using the dual pivot system Shimano has shortened the travel on the long arm. The brakes respond faster, remain centered, and require fewer adjustments. SHIMANO DURA-ACE 7402 SIDE-PULL BRAKESETThis is a precisely built, highly polished, brake set using conventional side-pull calipers. The calipers have a thrust bearing installed to reduce friction at the pivot bolt. There is a rotating cam quick release so the brakes can still be used if the wheel goes out of true while on a ride. It uses low profile brake shoes, the pad holder has a tire guide for quick wheel installation. The convenience adjusters have rubber grippers on them. Weight of the brakeset (according to Shimano, we didn't have a set available to weigh) is 616 grams, and comes with calipers, levers (Black or White), cables, cable shrouds, and installation instructions. Only in short reach. Color - BK-W
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