Whether you're training for a new personal record or fighting for a podium place at the next race, the SHIMANO RC503 will support you with the performance, comfort and functional features of a race shoe.
- BOA® Fit System with L6C twist lock and SHIMANO-developed lacing profile
- Carbon fiber reinforced nylon midsole for efficient power transfer
- Seamless integration of midsole and upper for optimal fit and stability
- Toe box and midsole made from 23% recycled material (by weight)
- Slim upper shoe made of perforated synthetic leather with new closure profile
BOA System
The Boa® system offers infinitely variable adjustment for the perfect fit. Flying one-hand adjustment, secure tightening and quick release.
| Size | US | CM | ACTUAL insoles length in: mm |
|---|---|---|---|
| 43 | 8,9 | 27,2 | 281 |
NOTE! To avoid unnecessary exchanges or returns of purchased footwear - when choosing the size you are ordering, PLEASE stick to the following rules:
A. The insole lengths in mm given in the last column are the ACTUAL, total lengths measured by ourselves.
B. PLEASE CHOOSE a size whose insole is 5mm to 10mm longer than the actual length of your bare foot (ROAD shoes closer to 5mm, MTB / GRAVEL / ENDURO shoes closer to 10mm).
C. How to measure your foot?
- Place the heel against a wall or e.g. furniture, and place something rigid, such as a book, perpendicular to the toes
- Measure the distance between the wall and the book.
- You should check both feet, because quite often one is longer :)






