MIDSOLE TECHNOLOGY
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
Lasting board + Outsole Seamless Midsole Structure Lasting board RP5 9.8 mm RC5 6.5 mm -3.3 mm
For Road
Research conducted by the SHIMANO DYNAMICS LAB found that reducing stack height (the distance between the sole and pedal axis) stabilizes pedaling strokes and increases power transmission efficiency, especially when applying high levels of downward force on the pedals. With the S-PHYRE RC9, we leveraged our manufacturing strengths to create a process for producing a midsole with minimal stack height. In order to share the benefits of a shorter stack height to a wider range of riders, we also adopted this midsole structure in our RC5 shoe.
Midsole Structure
1. ADJUST
TIGHTNESS 2. PULLS UP
THE MIDSOLE 2. 3. FOOT MAINTAINS CLOSE
CONTACT WITH MIDSOLE
Stack height
| Shoes | Sole thickness(mm) |
Midsole Structure | |
|---|---|---|---|
| Sole bottom to Upper inside |
|||
| SPD-SL | RC901 | 4.7 | X |
| RP901 | 6.6 | ||
| RC701 | 8.8 | ||
| RC500 | 6.5 | X | |
| RP501 | 9.8 | ||
| RP400 | 10.0 | ||
| RP301 | 10.0 | ||
| RP201 | 10.0 | ||
| RP100 | 8.8 | ||
For Mountain
Since MTB shoes with a shorter stack height also provide improved pedaling efficiency and bike control, we also use a seamless midsole structure in our MTB shoes to provide a stack height that is as low as our Road shoes.
Midsole Structure
Stack height
| Shoes | Sole thickness(mm) |
|
|---|---|---|
| Sole bottom to Upper inside |
||
| SPD Midsole |
XC901 | 5.9 |
| XC701 | 5.9 | |
| XC501 | 5.9 | |
| ME701 | 5.8 | |
| ME501 | 5.8 | |