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Product Description Specifications:Application:RoadProduct Line:TEGround Conditions:asphaltType:folding tyreTubeless System:Tubeless ReadyTechnical Information:Rubber Compound:SmartprimeCarcass:350 tpiSidewall:Sealed Corespun CottonPuncture Protection:PPS GanzoCompatibility:rims with hooksFeatures:fast road bike tyre with cotton content and puncture protectionideal balance between speed, grip and durabilitygood damping and precise controlTubeless Ready, can be run with or without an inner tubelow rolling resistance thanks to Smartprime rubber compoundZylon tyre beadNote from the manufacturer:Challenge tyres should not be mounted on wheels that do not meet ETRTO and ISO standards. Non-compliant wheels could cut through the sidewall above the bead, causing the tyre to burst and possibly injuring the rider. Technology:Handmade Tubeless Ready Handmade TLR tyres are made from the same materials and using the same processes as Challenge's handmade tubular tyres, except that no inner tube is incorporated. The carcass is wrapped around an aramid bead so that the tyre can be mounted on a clincher rim. Handmade tubeless ready tyres impress with their flat shape, which allows for a natural deformation of the carcass on uneven ground and a lower rolling resistance. A tubeless set-up with sealant maintains the signature suppleness of handmade Challenge tyres. Sealed Corespun Cotton The sidewall containing cotton is protected by a waterproof coating that extends from bead to bead. This makes the sidewall light, soft and supple, the tyres last longer and also look good for longer. PPS Ganzo The Puncture Protection System (PPS) Ganzo is a tyre insert strip made of flexible, tightly woven multi-component fabric, which is used between the tread and the carcass of the tyre. Models:25-622 (700x25C): Dimensions:700 x 25cETRTO:25-622Air Pressure (max.):6.5 barsRecommended air pressure:4.5 - 6 barsManufacturer Number:00151 (black), 00150 (black-white) 27-622 (700x27C): Dimensions:700 x 27cETRTO:27-622Air Pressure (max.):6.5 barsRecommended air pressure:4.5 - 6 barsManufacturer Number:00153 (black), 00152 (black-white)Contents:1 x Challenge Criterium RS folding tyre Weight: black / white | 28 | 25 mm | 25-622: 225 g Manufacturer: Challenge Tires Via Montello 18 31050 Fregona (TV) Italy info@challenge-tyres.com