Challenge Dune Pro folding tyre

Super-fast tyre for sand and ice: The Challenge Dune offers confidence through excellent handling.

The cross tyre for sandy and dry terrain. With 300 TPI, it rolls particularly smoothly and is puncture-resistant. The folding tyre features a 300 TPI nylon carcass. The Challenge Open Series tyres ride almost as well as tubular tyres, but are designed for standard clincher rims and fitting with an inner tube.

Challenge Duno Pro technology:

• Road bike tyre 33 mm x 622, foldable
• Casing: 300 TPI SuperPoly
• Puncture Protection Strip
• Tyre pressure: 3.5–5 bar
• Weight: 355 grams

Pro Handmade Clincher with SuperPoly casing

• Handmade tyres combine a variety of outstanding features to offer maximum comfort and minimal rolling resistance. Carefully selected materials are used in the various tyre grades depending on performance requirements. Soft, supple casings quickly adapt to the shape of the ground when rolling and cornering. This increases ground contact and grip and improves shock absorption on poor road surfaces. Soft, natural rubber treads are combined with lightweight, flexible puncture protection.
• Polyester is the most cost-effective of all hand-built casings. It is a synthetic fabric that is very strong and waterproof, offering significantly greater flexibility and durability than comparable nylon materials. Challenge uses high-quality polyester or SuperPoly polyester with a higher TPI rating to produce cost-effective pro-level tyres.

Hand-crafted natural rubber – Smart hardness

• Challenge’s hand-built natural rubber compounds are formulated to offer the perfect balance of durability without compromising performance, comfort and control. Although Challenge tyres wear out 10–20 per cent faster than the competition, they deliver significantly improved performance and a noticeably better riding experience throughout their entire lifespan. Depending on requirements, the tyres are fitted with rubber compounds of varying softness.

Puncture Protection System (PPS)

• The PPS Puncture Protection System consists of one or more layers of fabric between the tread and the tyre carcass. PPS significantly increases the tyre’s resistance to punctures, thereby offering maximum reliability.

Herstellerinformation: Challenge, Via Gattamela 41, 20149 Milan, Italy, https://www.challengetires.com