WITH THEIR AERO WHEELS AND SLEEK DESIGN, tri bikestime-trial models favored by dedicated triathleteswill get any cyclist salivating. No surprise they're one of the industry's fastest-growing categories. Unique geometry improves power delivery and creates a better drop position, while the forward seating engages your hamstrings, keeping your quads fresh for that end-of-race run. Unlike road bikes, which are designed for more control while riding in a pack, these purebreds are built for one thingto make you faster on those long, hard solo rides.
CERVÉLO P3 CARBON / $4,500, 18.4 lbs
Why It's Cool: This Canadian-built Tour de France stage winner is lighter on the wallet than other high-end carbons.
The Ride: When American Dave Zabriskie beat Lance Armstrong in the 2005 Tour de France prologue, triathletes took note: Zabriskie rode to victory on a P3 Carbon. Equally impressive, the 2006 frame is nearly half a pound lighter than last year's, and still makes diehards swoon, with luscious curves, one-piece carbon layup, and Cervélo's distinctive rear-wheel cutout. The P3 comes spec'd with Shimano Dura-Ace, VisionTech aero bars, a bladed front fork, and a dual-setting seatpost that adjusts for different riding positions. The P3's shallow Mid-V Easton Vista rims are fine for training, but to make this thoroughbred nearly unbeatable, invest in a higher-profile pair of rims.
Right Bike If: You spend more time at triathlons than on vacation. Sizes: 48 (650c wheels), 51, 54 (tested), 56, 58, and 61 cm; www.cervelo.com