A unique piece made with extremely fine carbon, an integrated monocoque aesthetically opposite to the RB1K but with the same absolute performance on road. It is the perfect bike for climbing thanking its utmost lightness combined to outstanding reactivity. Likewise it has an excellent performance on flat terrain and it is convenient for those who ride long. The new, sturdier and more compact central movement, allows to fully transfer power to the ground. A detail that makes this frame, together with the RB1K, the top racing frame currently available on the market.