calzini castelli fast feet 4 2026 Color:White Fork Suntour X1 32 RL-R

Fork Suntour X1 32 RL-R / Coil Spring Tapered Steerer / Reb

Each version of the Michelin Magi-X compound is specifically adapted to the individual requirements of a product to guarantee the tire's required performance

which also allows cable integration at the front of the bike

isolates vibrations

it effectively seals small holes and air leaks

calzini castelli fast feet 4 2026 Color:White Fork Suntour X1 32 RL-RCastelli Fast Feet socks have been developed and tested to deserve the "aerodynamic" label. There are many so called "aerodynamic socks" available on the market. But only Castelli Fast Feet 4 socks have been developed and tested to truly deserve this name. The few socks tested were probably evaluated under static conditions, without movement because its easier. But the foot is always moving, which is why a model was created to replicate the movement