FC-7800C has been developed with Shimano’s proven HOLLOWTECH II technology with an integrated bottom bracket. It uses identical bottom bracket bearing cups as FC-7800. The left crank arm features the same installation technology as current Shimano XTR to save some weight and to make installation even easier.
This state-of-the-art crankset will be available in gear combinations 53/39T and 52/39T in crank arm lengths 170, 172.5 and 175mm.
Shimano has twenty years of experience in the development of carbon fiber products, by using it in our high end fishing tackle range and also more recently for bicycle components such as Dura-Ace rims and shoe soles. We did not use it in cranksets before, since our tests showed over and over again that by using carbon alone, in general the weight goes down but also the rigidity decreases. By using an aluminum core however, Shimano has managed now to develop a crankset that is lighter and more rigid at the same time.
Michael Boogerd (Team Rabobank) and Markus Fothen (Team Gerolsteiner) have taken this crankset already to the ultimate test: the Tour de France. They were pleased with the combination of lighter weight, optimal rigidity and an attractive design.
tags: dura-ace, crank, fixie, fixied gear