RS1

The RS1 was BH's attempt to synthesise two worlds that road cyclists argued were incompatible: aerodynamic tube shapes and endurance comfort. By applying Kamm Tail profiles — tubes with a teardrop cross-section truncated at the back — BH matched the aerodynamic properties of their dedicated aero G8 race bike while keeping weight and compliance acceptable for long days. The ACR system, hiding all cables internally, was a practical innovation that also improved aerodynamics by eliminating exposed housing. Riders get a 32 mm tire clearance that no pure aero race bike of its era offered.