The Ghisallo is a wake-up call for weight-freak roadies dutifully switching everything (even water-bottle-cage spacers!) to carbon: There's another gravity-defying game in town. Weighing less than a box of Clif Bars, this all-titanium frame is not only the wispiest factory model available; it's the lightest complete bike we tested. Compulsively shaped tubing keeps the compact frame relatively stiff. "On climbs, you literally rocket upward without expending any extra energy," said one tester. If you're one to order the most expensive wine on the menu no matter what, you've found your next trophy.Bonus: The ProBuild kit serves up full Dura-Ace and Mavic Ksyrium SL wheels.Bummer: Big cyclists, or those with lots of torque, may find the slight frame flexy. 15.7 lbs, 56 cm; www.litespeed.com
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