The Grifo is Challenge's most versatile cyclocross tubular; it performs consistently and predictably in virtually all condition from fast and dry to wet and sloppy.
Features:
- Corespun silk "Seta" casing
All Challenge tires are completely hand-madeAnti-puncture strip included in tire casingTread is hand-glued onto an inflated tire body; this process yields a neutral state for the tread when the tire is in use and eliminate tread deformities at full-inflationFeatures seamless latex inner-tubeRecommended pressure range: 30-90psi