Softer: A proprietary softer compound rubber in the tread improves traction providing more grip on climbs and descents while increasing confidence in corners.
Suppler: This new softer compound allows Challenge to tune the tread’s base rubber to both reduce weight and further improve tread flexibility. Combined with 320 TPI Corespun Cotton casing and a seamless latex inner tube, the whole tire deforms to create the largest tire patch possible, absorbing every trail imperfection, maximizing traction and eliminating bounce to minimize rolling resistance.
Sealed: Also included is a special, latex formulated, tread-to-base tape sidewall coating that is applied in a thin coat that improves casing flexibility, prevents water absorption and maintains a brighter appearance.
The new tires include all the above changes with no sacrifice in durability. The factory-applied sealant binds and seals each cotton thread to keep the entire casing clean and dry, maintaining the lightest weight; a shiny white appearance; improving UV protection; saving you time and money hand-treating the sidewalls with a messy, unhealthy, solvent-based sealant and providing you the longest possible tire life – protecting your investment.
All these improvements make the tire fast in every condition giving the rider confidence to push to their limit.
Construction type: tubular tire | handmade
Material: casing: Corespun cotton
inner tube: latex
Weight: approx. 410 gram (manufacturer information)
Tire pressure: 1,6-6 bar / 23-90 psi
Carcass density (TPI/EPI): 320