Shimano 105 Di2, 50-34 chainrings with 11-34 cassette. The RS1 3.5, speed and comfort are assured. With the bike, everybody can enjoy cycling in Tenerife. You can cycle up to El Teide, Los gigantes, Vilaflor. Get the most out of your holiday and explore the Island on a different way, get the Olmo bike. The BH RS1 3.5 racing bike is the ideal bike if you are looking for performance, power, and efficiency. In the end, the rider is faced with a machine with incredible lateral stiffness, total stability, and optimal efficiency of the watts produced with each pedal stroke. The bike is equipped with the newest Shimano 105 Di2 12sp. The RS1 features the Kamm Tail design in its tubes to achieve a completely aerodynamic cross-section. More, the ultimate lateral stiffness, total stability, and complete efficiency in terms of watts on each pedal stroke. The new RS1 frame features the ACR system allowing 100% internal cabling for a clean and cable-free frame.