Challenge Grifo Tubular Cyclocross TyreThe Challenge Grifo Tubular Cyclocross Tyre provides exceptional grip  and traction while its rolling performance is so fast its beyond competition  ready. The casing is produced with the latest technical materials like Corespun  (a cotton and polyester combination). Corespun is a thread process that  provides a supple and very strong casing while keeping weight low. The casings  have a high TPI count that can reach over 300 TPI. The production process  avoids any vulcanisation, which enables all materials to keep their suppleness  and flexibility.Features:  Use: Cyclocrosss, Mixed, Soft Pack  Type: Tubular  Puncture Protection: PPS  Casing: SuperPoly  TPI: 300  Inflation Pressure: 23 - 90 psi  Weight: 415gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Paris Roubaix Clincher Road TyreThe Challenge Paris Roubaix Clincher Tyre is perfect for riders racing over  road, cobble of gravel terrain, providing exceptional rolling performance,  superb grip and top-level reliability. Thanks to the Challenge PPS2 casing you  have two layers of dense puncture protection while keeping the weight very low.Features:  Use: Road, Cobble, Gravel  Type: Clincher  Puncture Protection: Double PPS  Casing: SuperPoly  Tyre Width: 27mm  TPI: 300  Inflation Pressure: 90 - 130  Weight: 285gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Strada Tubular Road TyreThe Challenge Strada Tubular Road Tyre provides fast-rolling efficiency and cornering in all riding conditions. Perfectly suited to long distance road riding, as it is to gravel riding and weekend racing. Constructed from high-end materials, featuring a PPS puncture protection layer and rolling on the superb SuperPoly rubber compound; this tyre is ready for any riding situation you present it with and will excel every mile of your journey.Features: Use: Road Racing / Big Rider / Rough Roads Size: 700 Tyre Width: 25mm Internal Rim Width:13-17mm TPI: 300 Casing: SuperPoly Flat Protection: PPS BAR: 6-12 PSI: 90-175 Inner Tube: Latex Weight: 285gTechnologies: Challenge Handmade Tubulars (HTU): Our Handmade Tubular (HTU) tires perform better than any tubeless system! Therefore, they are raced by all the top athletes and teams in every cycling segment. The latex inner tube we cradled inside the high-quality casing that is sewn shut, forming a soft protective layer for the delicate tube. A base tape is glued over the sewing for protection and to absorb the adhesive later applied to hold the tubular on the rim. The carcass is mounted on a rim, inflated and a special natural rubber tread is precisely glued on top. Puncture protection layers and sealants can be applied to the finished casing, depending on the tubular's use. Buy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

?Pneu/boyau ouvert de route Challenge Paris-RoubaixLe boyau Challenge Paris Roubaix est parfait pour les cyclistes sur route, graviers, offrant des performances de roulement exceptionnelles, une excellente adhérence et une fiabilité de haut niveau. Grâce au boîtier Challenge PPS2, vous disposez de deux couches de protection anticrevaison dense tout en maintenant un poids très faible.Caractéristiques :  Utilisation : route, pavé, gravier  Type : boyau  Protection anticrevaison : double PPS  Enveloppe : SuperPoly  Largeur du pneu : 27 mm  T.P.I : 300  Pression : 75 - 175 psi (1,5 à 6 bars environ)  Poids : 330 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Pneu/boyau ouvert de route Challenge Paris-RoubaixLe boyau Challenge Paris Roubaix est parfait pour les cyclistes sur route, graviers, offrant des performances de roulement exceptionnelles, une excellente adhérence et une fiabilité de haut niveau. Grâce au boîtier Challenge PPS2, vous disposez de deux couches de protection anticrevaison dense tout en maintenant un poids très faible.Caractéristiques :  Utilisation : route, pavé, gravier  Type : boyau  Protection anticrevaison : double PPS  Enveloppe : SuperPoly  Largeur du pneu : 27 mm  T.P.I : 300  Pression : 75 - 175 psi (1,5 à 6 bars environ)  Poids : 330 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Pneu/boyau ouvert de route Challenge Paris-RoubaixLe boyau Challenge Paris Roubaix est parfait pour les cyclistes sur route, graviers, offrant des performances de roulement exceptionnelles, une excellente adhérence et une fiabilité de haut niveau. Grâce au boîtier Challenge PPS2, vous disposez de deux couches de protection anticrevaison dense tout en maintenant un poids très faible.Caractéristiques :  Utilisation : route, pavé, gravier  Type : boyau  Protection anticrevaison : double PPS  Enveloppe : SuperPoly  Largeur du pneu : 27 mm  T.P.I : 300  Pression : 75 - 175 psi (1,5 à 6 bars environ)  Poids : 330 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

Challenge Pista Clincher Track TyreThe Challenge Pista Tubular Track Tyre is designed to provide exceptional performance on the Track/Velodrome and to perform to the highest level. Thanks to being optimised for rolling performance and enhanced rubber compound construction, it supplies superb rolling efficiency, grip and stability. Built for world-class performance, this tyre uses its aerodynamic handmade tubulars and clinchers to give you smooth performance on wooden indoor tracks.Features: Use: Track Racing Size: 700 Tyre Width: 23mm Internal Rim Width: 13-15mm TPI: 320 Bead: Aramid Casing: Corespun Cotton BAR: 8-12 PSI: 115-175 Weight: 170gTechnologies: Challenge Handmade Clinchers (HCL): These Handmade Clinchers are made from the same materials and processes as our handmade tubulars but instead of sewing an inner tube inside the casing is wrapped around an aramid bead to form a tyre that fits on a clincher rim. The HCL is moulded flat, not in a horseshoe like a TLR or VCL. This shape allows the casing to naturally deform over surface imperfections and minimize rolling resistance. A tubeless tire is moulded in a U-shape to make the sidewalls rigid, so the system does not “burp” or lose air when it deforms after it encounters a surface imperfection. The tubeless tire's stiff sidewall compromises its ability to equal a supple HCL with a latex inner tube.Buy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

?Boyau de piste Challenge PistaLe boyau pour piste Challenge Pista est spécialement conçu pour être utilisé sur la piste. Optimisé pour fournir des performances de roulement exceptionnelles avec une résistance minimale, il roule à une vitesse impressionnante. Le profil de la bande de roulement offre une excellente adhérence, ce qui offre une confiance exceptionnelle au cycliste lors des courses autour du vélodrome.Caractéristiques :  Utilisation : spécifique pour la piste  Type : boyau  Enveloppe : Super Poly  T.P.I : 300  Pression : 116 - 203 psi (3 à 9 bars environ  Poids : 190 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

Challenge Stradabianca Road TyreThe Challenge Stradabianca Road Tyre is designed for Gravel racing. Featuring a proven Paris-Roubaix tread pattern and a PPS-2 double puncture protection strip. It provides a low rolling resistance with increased casing volume; it achieves a new level of control, stability, rolling performance, puncture resistance and comfort. Giving you fast rolling and cornering, this world-class tyre is a perfect upgrade for riders who want maximum control in all riding conditions. Features: Use: Rough Road, Cobbles, Big Riders, Hard Packed Dirt Size: 700 Tyre Width: 36mm Internal Rim Width: 17-23mm TPI: 260 Bead: Aramid Casing: SuperPoly Flat Protection: Double PPS BAR: 3-6 PSI: 45-90 Weight: 375g Technologies: Challenge Handmade Clinchers (HCL): Our Handmade Clinchers are made from the same materials and processes as our handmade tubulars but instead of sewing an inner tube inside the casing is wrapped around an aramid bead to form a tire that fits on a clincher rim. The HCL is moulded flat, not in a horseshoe like a TLR or VCL. This shape allows the casing to naturally deform over surface imperfections and minimize rolling resistance. A tubeless tire is moulded in a U-shape to make the sidewalls rigid, so the system does not “burp” or lose air when it deforms after it encounters a surface imperfection. The tubeless tire's stiff sidewall compromises its ability to equal a supple HCL with a latex inner tube. Buy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Stradabianca Road TyreThe Challenge Stradabianca Road Tyre is designed for Gravel racing. Featuring a proven Paris-Roubaix tread pattern and a PPS-2 double puncture protection strip. It provides a low rolling resistance with increased casing volume; it achieves a new level of control, stability, rolling performance, puncture resistance and comfort. Giving you fast rolling and cornering, this world-class tyre is a perfect upgrade for riders who want maximum control in all riding conditions. Features: Use: Rough Road, Cobbles, Big Riders, Hard Packed Dirt Size: 700 Tyre Width: 36mm Internal Rim Width: 17-23mm TPI: 260 Bead: Aramid Casing: SuperPoly Flat Protection: Double PPS BAR: 3-6 PSI: 45-90 Weight: 375g Technologies: Challenge Handmade Clinchers (HCL): Our Handmade Clinchers are made from the same materials and processes as our handmade tubulars but instead of sewing an inner tube inside the casing is wrapped around an aramid bead to form a tire that fits on a clincher rim. The HCL is moulded flat, not in a horseshoe like a TLR or VCL. This shape allows the casing to naturally deform over surface imperfections and minimize rolling resistance. A tubeless tire is moulded in a U-shape to make the sidewalls rigid, so the system does not “burp” or lose air when it deforms after it encounters a surface imperfection. The tubeless tire's stiff sidewall compromises its ability to equal a supple HCL with a latex inner tube. Buy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Almanzo Tubular TyreThe Challenge Almanzo Tubular MTB Tyre brings the rolling performance  and traction benefits of the tubular tyre system to mountain bikes. Featuring  two layers of puncture protection, a supple and tough SuperPoly tread compound  and a reinforced 260 TPI casing; this tyre provides exceptional rider  confidence thanks to the its grip and traction qualities, which enables you to  rider faster over gravel terrain.Features:  Use: Gravel  Type: Tubular  Puncture Protection: Double PPS  Casing: SuperPoly  TPI: 260  Inflation Pressure: 60 - 130 psi  Weight: 385gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Dune Tubular Cyclocross TyreThe Challenge Dune Tubular Cyclocross Tyre is a fast rolling, high  traction tyre designed to withstand the rigours of cyclocross riding. Featuring  a corespun cotton casing with a 320 TPI construction for ultimate performance  and reliability. It features a pyramid tread formation across the centre of the  tyre tread to ensure rolling performance and straight-line stability. The  side-lugs on the tyre tread are aggressive and pronounced to ensure that when  cornering you have more than enough grip, and so that ultimately you can lay  off the brakes and keep your speed up.Features:  Use: Cyclocross, Gravel, Road  Type: Tubular  Puncture Protection: PPS  Casing: Corespun Cotton  TPI: 320  Inflation Pressure: 23 - 90  Weight: 400gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Almanzo Tubular TyreThe Challenge Almanzo Tubular MTB Tyre brings the rolling performance  and traction benefits of the tubular tyre system to mountain bikes. Featuring  two layers of puncture protection, a supple and tough SuperPoly tread compound  and a reinforced 260 TPI casing; this tyre provides exceptional rider  confidence thanks to the its grip and traction qualities, which enables you to  rider faster over gravel terrain.Features:  Use: Gravel  Type: Tubular  Puncture Protection: Double PPS  Casing: SuperPoly  TPI: 260  Inflation Pressure: 60 - 130 psi  Weight: 385gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Strada Clincher Road TyreThe Challenge Strada Clincher Road Tyre provides exceptional rolling  performance, superb traction and grip while being excellently puncture  protected. Featuring a high-quality construction thanks to the premium material  used to create it. This tyre is a fantastic all-rounder, suited to long  distance riding, is light enough to race and is also features a high-end grippy tread compound to efficiently traverse gravel sections.Features:  Use: Road, Training, Race, Gravel  Type: Clincher  Puncture Protection: PPS  Casing: SuperPoly  TPI: 300  Inflation Pressure: 100 - 145  Weight: 240gBuy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

Challenge Elite Tubular Road TyreThe Challenge Elite Tubular Road Tyre features a herringbone tread  pattern on a Poly compound; it's designed to provide exceptional rolling performance, traction, grip and superb reliability on both dry and wet terrain  conditions. This tyre provides fantastic cornering traction, ensuring complete  rider confidence at high speed while providing generous shock absorbing as it  soaks up the chatter and bumps on the road surface. Engineered for durability, this tyre is perfect for both training and racing, as it handles all the challenges that are associated with riding on rough roads in the winter and in the spring. Features: Use: Road, Training Size: 700 Tyre Width: 25mm Internal Rim Width: 13-15mm TPI: 220 Casing: Poly Flat Protection: PPS BAR: 7-12 PSI: 100-175 Inner Tube: Butyl Weight: 295gTechnologies: Challenge Handmade Tubulars (HTU): These Handmade Tubular (HTU) tyres perform better than any tubeless system! Therefore, they are raced by all the top athletes and teams in every cycling segment. The latex inner tube we cradled inside the high-quality casing that is sewn shut, forming a soft protective layer for the delicate tube. A base tape is glued over the sewing for protection and to absorb the adhesive later applied to hold the tubular on the rim. The carcass is mounted on a rim, inflated and a special natural rubber tread is precisely glued on top. Puncture protection layers and sealants can be applied to the finished casing, depending on the tubular's use.Buy Challenge Wheels & Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.

?Pneu VTT Challenge Gravel GrinderLe Challenge Gravel Grinder est un pneu de hors-piste d'exception. Il est fabriqué à partir de composé SuperPoly agressif et fiable pour assurer une exceptionnelle performance de roulement et une bonne traction quelles que soient les conditions de course. Afin d'assurer une fiabilité complète, ce pneu est doté d'une protection anticrevaison Double PPS et d'une enveloppe de 120 filets par pouce (TPI). Il est idéal pour toutes vos aventures de cross-country.Caractéristiques :  Utilisation : cross-country, compétition  Type : à tringle  Protection anticrevaison : double PPS  Enveloppe : SuperPoly  Largeur de pneu : 36c  Filets par pouce (TPI) : 120  Pression : 43 - 130 psi (3 à 9 bars environ  Poids : 499 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Pneu VTT Challenge Gravel GrinderLe Challenge Gravel Grinder est un pneu de hors-piste d'exception. Il est fabriqué à partir de composé SuperPoly agressif et fiable pour assurer une exceptionnelle performance de roulement et une bonne traction quelles que soient les conditions de course. Afin d'assurer une fiabilité complète, ce pneu est doté d'une protection anticrevaison Double PPS et d'une enveloppe de 120 filets par pouce (TPI). Il est idéal pour toutes vos aventures de cross-country.Caractéristiques :  Utilisation : cross-country, compétition  Type : à tringle  Protection anticrevaison : double PPS  Enveloppe : SuperPoly  Largeur de pneu : 36c  Filets par pouce (TPI) : 120  Pression : 43 - 130 psi (3 à 9 bars environ  Poids : 499 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Pneu Challenge Grifo Vulcanised (tubeless)Le pneu Challenge Grifo est un pneu tout usage exceptionnel conçu pour offrir une excellente adhérence lorsque le terrain est lâche, mais aussi pour rouler vite lorsque c'est indispensable. Avec un profil de bande de roulement incliné central pour vous assurer une accélération optimale, des crampons latéraux agressifs, une adhérence exceptionnelle est activée lorsque vous vous penchez dans les virages ou lorsque vous abordez des sections de sentiers techniques. Ce pneu est conçu pour être robuste et fiable- le Grifo est un ajout précieux à votre arsenal de course / entraînement.Caractéristiques : Utilisation : Cyclocross, GravelLargeur d'inflation : 33 mmEnveloppe : nylon, 60 TPIPression maximale recommandée : 40-75 psiTringle : aramideConditions : tout usage, soft packPoids : 350 gAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Prolongateurs de valve (alliage, paire, avec outils)Ces prolongateurs de valve en alliage comprend deux prolongateurs et un outil de serrage spécifique pour les monter avec la plus grande précision. Ces prolongateurs de valve sont extrêmement utiles si vous utilisez des roues à section profonde/jantes à profil haut.Caractéristiques : Prolongateurs de valve Challenge de haute qualitéLe kit comprend : 2 x prolongateurs de valve, 1 x outil de valveAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.

?Prolongateurs de valve (alliage, paire, avec outils)Ces prolongateurs de valve en alliage comprend deux prolongateurs et un outil de serrage spécifique pour les monter avec la plus grande précision. Ces prolongateurs de valve sont extrêmement utiles si vous utilisez des roues à section profonde/jantes à profil haut.Caractéristiques : Prolongateurs de valve Challenge de haute qualitéLe kit comprend : 2 x prolongateurs de valve, 1 x outil de valveAchetez vos roues et pneus Challenge sur Chain Reaction Cycles, le plus grand magasin de vélo en ligne au monde.