Faster and safer: the PRO4 Service Course has better grip on wet roads; It reaches a speed 16% higher than that of its predecessor PRO3 Race. Improved mileage and puncture resistance compared to the PRO3 Race Technical Details . Two-component tread: a rubber mixture optimized against wear in the middle. Sharper profile, with tread optimized for more agility. FILTER: ROAD FILTER: 700 FILTER: 25 FILTER: FOLDABLE