Bike Computer Review

If our Summer Buyer’s Guide preview of electronic shifting systems for road bikes filled your head with dreams of the future, I’m happy to tell you that the future is now. After years of gossip, spy photos, and not-so-stealth testing under some of the world’s top pros, Shimano has announced that it will begin offering electronic shifting under its top-tier Dura-Ace brand in January 2009. Officially dubbed Dura-Ace 7970 Di2, the offering includes front and rear deraillieurs, integrated “Dual

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