Ceepo Viper — ($4,800 Frameset, $6,307-$8,160 Complete)
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The Viper provides a stiff, aggressive ride with an unexpected level of comfort. Its ultra-deep section seat tube improves aerodynamic airflow around the rear wheel, with a tight tolerance wheel cut-out to smooth airflow over the rear wheel. It leads the industry in its high aspect ratio 26mm thin seat tube and downtube, and it includes a fully frame-integrated aero seat post. Ceepo.com