Race level road cycling shoes built on Shimano Dynalast Technology for improved energy transfer and efficiency over long distances. The R170 features a hollow channel carbon sole for stiffness and lightness and a supple, ventilated syntheic/mesh upper.
The R170 Upper features a low profile micro-metric buckle closure for secure fitting and adjustment even when riding. Dual offset velcro straps ensure an even fit without abrasion or pressure points. The upper is constructed from a supple and stretch resistant synthetic leather and 3d moisture control mesh for freshness in hot riding conditions.
Shimano Dynalast Technology focuses on maximizing energy transfer from the very beginning; the pedal stroke. The newly developed last shape optimizes the toe spring angle and secures your foot in the ideal pedaling position. This helps reduce the loss of power at the end of the upstroke stage. It reduces tension in the Plantar, Calf and Hamstring muscles, leading to smoother hip rotation and cumulative gains over long distances.
The Carbon Sole features hollow channels to increase surface area, adding strength and rigidity while reducing weight. It also adds an extra 11mm of cleat adjustment to help you find your perfect position on the pedal.
Finally a one-piece, carbon reinforced Nylon heel cup provides better hold, stability and power on sprints and climbs. Each element of Dynalast technology is designed to work in harmony for increased performance on endurance road cycling events and long distance training.