Castelli Fast Feet 4 Socks Rear Derailleur

Castelli Fast Feet 4 Socks Rear DerailleurThere are many so called aero socks out there. But the Castelli Fast Feet 4 sock has the development and test results to prove that it lives up to its name. HIGHLIGHTS There are many so called aero socks out there. But the Castelli Fast Feet 4 sock has the development and test results to prove that it lives up to its name. The few socks that have been tested were likely evaluated using a static test while at rest, because thats easier. But since a

When Swiss Side's aero expertise

Once you’ve selected your route

The wider toe box gives your feet a more natural fit and platform

Caffeine can help to maintain physical performance in this situation

powerful riders

before and after excercise and for fasted training

One Key System compatible: Yes

Approx weight in KG

R: 12x148mm

or everyday cycling

The fit range is reduced with the smaller wing so this item is suited to riders utilizing a narrow armrest

We took our smoothest and quietest brake track and gave it the lightest aluminum carrier we’ve made yet