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