Road shoes need to know…
Feb 17, 2022
4 minutes
01 Sole stiffness
Soles designed for two-bolt SPD systems are more flexible and offer better grip than the soles of dedicated road cycling shoes. The three-bolt system used by the likes of Look requires much stiffer soles to create an efficient pedalling platform, though the trade-off is that they’re much harder to walk in.
When it comes to determining the levels of stiffness of their soles, bike companies don’t make it easy for the consumer, with each brand seemingly having different scales: Specialized’s goes up to 15, Bontrager’s up to 14, Shimano’s 12! But from our experience, full-carbon soles tend to be noticeably stiffer than soles made from
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