SHIMANO RC903 Road Shoes

Our Flagship Racing Shoe Evolved With Even Greater Comfort, Less Weight, And Sleeker Lines. Features: - Lightweight and breathable microfiber leather upper provides optimal fit and superior comfort throughout your ride. - Premium-finish heel cup with anti-twist stabilization secures optimal foot positioning for intense acceleration. - Sleek, low-profile crossover lacing pattern elegantly secures forefoot. - 360º surround wrapping upper creates a supremely engineered fit for all riders. - Dual low-profile BOA® Li2 dials allow quick and precise micro-adjustments. - Integrated seamless midsole and upper construction set a new level of fit, stability and lightweight performance. Specifications: - Cleat Type: Spd-Sl - Last Type: Shimano Dynalast - Stiffness Index: 12 - Best Match Pedal: Pd-R9100 - Wider Cleat Adjustment Range: Yes - Seamless Midsole Structure: Yes - Surround Wrapping Upper: Yes - Function Specific Zones: Yes - Anti-Twist Stabilizer Heel Cup: Yes - External Heel Cup: Yes - Replaceable Heel Pad: Yes - Hollow Channel: Yes - Carbon Sole/Mid Sole: Yes - Shimano Dynalast: Yes - Silvadur®: Yes - Closure: 2 Boa (Li2) - Upper Material: Microfiber Synthetic Leather+Mesh - Outsole Material: Tpu (Cover) - Midsole Material: Carbon Fiber Composite - Standard Insole: High Density Cup Insole With Adaptable Arch Pads - Men´s Actual Weight : 225 G Technology: - Streamlined Heel Cup: Smoothly integrated heel cup with anti-twist stabilization inside - Low-Profile Lace Guide: Sieek and slender lace guide provides a cleaner appearance on the top of the foot. - Airy Synthetic Leather: Thin and breathable synthetic leather upper shaves even more grams for pro-fiding performance. - Sleek Closure Configuration: Low-profile BOA® Fit System Li2 dials allow fast and precise micro-adjustments and quick release. - Dynalast Profile: Well-established last shape provides thee pro-proven fit you know and love. - 360 Surround-Wrapping Upper: Our 360 surrounding upper wraps the foot in a supportive cocoon to provide a supremely engineered fit, unparalleled stability and lightweight performance for all riders. - Shimano´s Stiffest Sole: Dynalast Carbon fiber sole with level 12 stiffness. Spdsl: - Born of the pro tour demand for optimal power and endurance, the low-profile pedal technology has expanded to a wide range of cyclists, including competitors at all levels, sport, club and recreational riders. SPD-SL is a road pedal platform systematically engineered with SHIMANO footwear to transfer more power from your body to your bike. For pro riders the extra-wide, low-profile cleat distributes energy more evenly over a wider surface and transfers it more efficiently to the bike, under the most extreme pedaling loads. No wasted movement. No loss to flex, voids or mismatched shoe/pedal designs. It’s a core advantage that helps win races. The same energy efficiency that powers pro riders to the podium enhances the experience of other rider categories. Increased endurance for longer rides. More comfort and fun! System-engineered. Rider-tuned. You choose. Power transfer efficiency: - SPD-SL is the road specific refinement of the system. This pedal platform was designed specifically for the needs of world-class road racers. The seamless pedal and cleat interface for a more efficient power transfer under the extreme pedaling loads encountered in race competitions. Shimano Dynalast: - Optimized Shoe Last: The toe-spring section of a cycling shoe plays a key role in supporting efficient pedaling. Too high, and it causes increased tension in the plantar, calf, and hamstring muscles. Too low, and you get a bowlegged, inefficient pedaling form. Extensive research by Shimano´s R&D experts has produced a superior shoe last design with an optimized toe-spring section that promotes a smoother, more energy-efficient upstroke. Built based on feedback from pro riders, Shimano Dynalast helps reduce energy loss on long rides, letting you keep more in the tank for that final sprint to the line. Upper Technology: - The construction of our uppers and closure systems are customized to the characteristics of each rider’s foot. Our Surround Wrapping Upper surrounds the whole foot with a seamless piece of leather, which creates a better fit with fewer gaps between shoes and feet.