Triathlon and time trial specialists
Every second counts. Every watt precious. Nothing gets between you and a PR. The R4 Aero road tyre is your tyre. With it's aerodynamic profile, Aero Wings and 220TPI casing, this tyre lives up to its name as the world's fastest tyre.
- Unique tread profile improves aerodynamics and saves 37 seconds over 40km
- Unique Aero Wing bead eliminates gap between rim and tyre for aero advantage
- Hard-Case Lite protects against punctures with superior, lightweight, sub-tread material