Ridden to world records and U.S. national records, the Felt TK1 is a legendary performer in the track-racing world. The wind-tunnel developed and tested frame is the choice of for World Champion Sarah Hammer and Project London's Sprint Team among others. The new 2012 TK1 Sprint utilizes Felt's rigid UHC Advanced Aero Modular carbon fiber frameset that offers a super-strong and stiff platform for unmatched responsiveness and pedaling efficiency.