Designing a midsole that also connects to the leather upper helps keep riders’ feet closer to the sole.
This minimizes stack height, improves fit, and keeps the foot securely in place while pedaling.
It also reduces power loss and prevents fault-induced failure.
SEAMLESS MIDSOLE STRUCTURE
Conventional Structure Seamless Midsole Structure Lasting board Lower stack
LOWER STACK HEIGHT STABILIZES PEDALING STROKES AND MAXIMIZES EFFICIENCY.
SHIMANO engineers and researchers discovered reducing stack height, the distance between the sole and pedal axis, stabilizes pedaling strokes and increases power transmission efficiency. A lower stack height is especially important when applying high levels of downward force on the pedals.
Our mid to high-end RC shoes and TR501 Triathlon shoes now share the same S-PHYRE seamless midsole structure first introduced in our pro-level RC9 series shoes.
TIGHTNESS 2.MIDSOLE LIFTS 2. 3.FOOT MAINTAINS CLOSE
CONTACT WITH MIDSOLE
On-road shoes: Stack height
|Sole bottom to
MTB shoes with a lower stack height also benefit from improved pedaling efficiency and bike control.
All of our MTB racing shoes have an original midsole structure that provides more stable and efficient pedaling to riders of all levels.
Off-road shoes: Stack height
|Sole bottom to
Our RC702 competitive road racing shoes feature a newly optimized midsole structure that further enhances stability and comfort. It has a flattened area under the ball of the foot that more comfortably and efficiently transfers pedaling power. Small, strategically-placed ventilation and drainage ducts keep feet drier for more comfortable performance, rain or shine.