Shimano Dura Ace 9 speed Triple chainset. Crank length - 170 mm. C / ring sizes - 30.Requires Octalink 118mm bb (NOT SUPPLIED - 6500 or 7700 series). The item "Shimano Dura Ace 7703 9-speed bicycle chainset 170mm 30.39.53 / NOS" is in sale since Tuesday, May 22, 2018. This item is in the category "Sporting Goods\Cycling\Bike Components & Parts\Chainsets & Cranks". The seller is "bikeparts1139417" and is located in Welwyn Garden City. This item can be shipped worldwide.