MIDSOLE TECHNOLOGY

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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 mmSEAMLESS MIDSOLE STRUCTURE

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
For Road

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

For Road

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