Bolt-on axle

Centered handle is vinyl dipped for comfort

SDG added our proven circular icon dampeners to disperse shock and vibrations

Compatible only with eTap AXS rear derailleurs

Built-in Insect Shield Protection repels mosquitos

SWIFTWICK Aspire Four Socks - 4 inch giant Bolt-on axleThe ASPIRE is engineered with firm compression and a thin profile for a responsive feel. Firm compression supports every contour of the foot to reduce fatigue during endurance activities. The Four height sits below the calf and it's double cuff construction provides extra support for cycling and trail running. Thin profile is designed to fit into any technical shoe with a barely there feel. Firmly hugs the contours of your feet to support the arch and