2012 Tarmac SL4 Pro Ui2 Mid-Compact

Whether it's winning the Tour de France or a city-limit sprint, the next generation of Tarmac—the SL4—was born to race, with head-snapping acceleration and razor-sharp handling. The Pro model has even higher stiffness-to-weight than last year's industry- leading SL3 frame, and features new Ui2 electronic shifting for immediate, spot-on shifting, plus Roval Fusée SL wheels.

• Ride like the pros on the new SL4 FACT IS 10r carbon frame with uniqely shaped, tapered head tube and OSBB: now even stiffer and lighter for pure, unbridled speed and power

• Full monocoque FACT carbon fork with a tapered carbon steerer is super light with great torsional rigidity for high-speed handling

• Roval Fusee SL wheelset combines our super-light alloy rims with aero features for a fast and compliant ride for everyday training and racing

• Specialized Pro FACT carbon crankset with OSBB and removable spider has outstanding strength-to-weight ratio for superior power transfer, plus new Shimano Ultegra Di2 electronic group for state-of-the-art performance

• 1-1/8" to 1-3/8" steel headset with Cr-Mo cartridge bearings is low-maintenance, smooth, and durable, plus 8mm carbon cone and 20mm of carbon spacers

• Pro FACT carbon seatpost is super light and stiff for optimal power transfer during all-out seated efforts

• Adjustable four-position oversized alloy stem with 31.8mm bar clamp for strength and versatile positioning

• Body Geometry Romin Expert saddle with hollow Ti rails is built for racing fast with a contoured profile that keeps the rider in an optimal power-transfer position