Tires/Tubes

Alloy air valve caps help prevent air loss

Alloy air valve caps help prevent air loss

Box One™ 120 TPI Folding Tires were engineered with a minimalist approach to hit lofty goals for weight, traction, rolling resistance, and rebound. At its heart is a super-supple 120TPI casing where we forced in as much rubber displacing nylon as possible. Skin walls are employed to reduce drag and further reduce weight. We flanked the high-density casing with a tightly packed hoop of aramid fibers. Finally, we draped this all with BMX race-specific tread that transitions from a center band with a large contact patch to unidirectional tactile knobbies on the sides. This aggressive combination allows for maximum traction out of the gate, immense adhesion in the corners, and low rolling resistance in the straights. A state-of-the-art mixture of compounds is used in various areas of the apex, wall, bead seat, and center – with higher silica content in the tread to again remove more weight. Note: Not a tubeless tire FEATURES: - 120 TPI High-Density Casing - Aramid Folding Bead - High-Traction Directional Grooves for Starting Gate Grip Point - Low Rolling Resistance Center Strip Chevrons - Countless Ramped Hexagonal Directional Knobbies

High-performance tubeless systems deserve high-performance tubeless sealant. The SMART Sealant was designed to work with both vulcanized and handmade TLR and Tubeless tires. This non-allergenic, ammonia-free formula can seal up to 6mm cuts, remains liquid in the tire for up to 6 months, doesn't coagulate with CO2 use, and doesn't damage rims or tires with extended use. Installation is straightforward using the application tip and there is no need to shake the bottle. Available in a 250ml/8.5oz bottle.

Challenge's S.C. Seamless Latex Cross Tube is hand made for the highest quality. Latex tubes are usually lighter and roll with less resistance than standard butyl tubes. They also resist punctures. The S.C. fits tires 28 to 35mm wide, and has a 47.5mm-long valve with a removable core. - 72 grams

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast-rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. This clincher with 120TPI nylon casing provides both performance and durability. PPS - The Puncture Protection Strip is a special fabric placed between a tire's tread and casing to increase resistance to punctures.

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast-rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. This TLR clincher with 120TPI nylon casing provides both performance, durability, and puncture protection when combined with the appropriate tubeless sealant.. TLR - TLR tires versions can be ridden tubeless with the addition of sealant but can also be run with an inner tube. - A bead-to-bead inner coating gives added puncture protection to these tubeless ready tires and greatly reduces gradual loss of air pressure. An aramid bead protection strip increases tire longevity and reduces rim chafing.

Race it hard or just head off the beaten path. The Strada Bianca wraps Challenge's proven herringbone tread pattern further around a large volume casing and adds a gravel specific construction to take you comfortably over less-than-perfect surfaces. This is your tire for rough roads, packed dirt, and most gravel surfaces. This TLR clincher with 120TPI nylon casing provides both performance, durability, and puncture protection when combined with the appropriate tubeless sealant.

The Strada is Challenge's go to tire for long days on the road. This all-condition tire combines a round profile that takes the sting out of rough pavement with a construction that provides maximum control and low rolling resistance. This handmade clincher combines a supple, 300TPI SuperPoly casing with natural rubber tread for long distance comfort, confident cornering, and quick handing. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures.

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. This handmade clincher combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo + PPS2, and a high mileage, grippy, natural SMARTplus tread compound. 260TPI SuperPoly casing.

Race it hard or just head off the beaten path. The Strada Bianca wraps Challenge's proven herringbone tread pattern further around a large volume casing and adds a gravel specific construction to take you comfortably over less-than-perfect surfaces. This is your tire for rough roads, packed dirt, and most gravel surfaces. This handmade clincher combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo + PPS2, and a high mileage, grippy, natural SMARTplus tread compound. 260TPI SuperPoly casing.

The Strada is Challenge's go to tire for long days on the road. This all-condition tire combines a round profile that takes the sting out of rough pavement with a construction that provides maximum control and low rolling resistance. This tire takes tubeless to a higher performance level by combining TLR's properties with a handmade construction for the ultimate in traction and ride quality. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

Race it hard or just head off the beaten path. The Strada Bianca takes the proven construction of the Paris-Roubaix and adds volume to take you comfortably over less-than-perfect surfaces. Challenge introduces STRADA BIANCA H-TLR 45. The staple herringbone-design tire proves its handmade performances on rougher terrain with a new gravel-specific construction and an added beefier new 45mm size. The STRADA BIANCA 45 is the tire designed to take you comfortably rolling over rough pavement, cobbles, sandy or hardpack fields, to literally floating over the more enduring dry, rocky terrains. It is the first 45mm tire in the Challenge range.

The Getaway is the latest gravel tread designed to take you beyond where the pavement ends to where the terrain is less maintained. Its design includes a tightly packed, fast rolling center for straight line control and speed, open transition knobs for sandy and wet terrain, and more aggressive shoulder knobs for controlled cornering and stability in loose conditions. This tire takes tubeless to a higher performance level by combining TLR's properties with a handmade construction for the ultimate in traction and ride quality. This tire combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo, and a high mileage, grippy, natural SMARTplus compound. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

Make your mark on the gravel scene with the Gravel Grinder. This tire combines a fast rolling diamond center with aggressive shoulder knobs that only hook-up when the terrain gets soft, muddy, or a bit sketchy. This tire takes tubeless to a higher performance level by combining TLR's properties with a handmade construction for the ultimate in traction and ride quality. This tire combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo, and a high mileage, grippy, natural SMARTplus compound. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

The Strada is Challenge's go to tire for long days on the road. This all-condition tire combines a round profile that takes the sting out of rough pavement with a construction that provides maximum control and low rolling resistance. This handmade tubular combines a supple, 300TPI SuperPoly casing with natural rubber tread, and a seamless latex inner tube for improved comfort, confident cornering, and quick handing. The latex tube is lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats. The tube also includes a removable core Presta valve. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures.

Continental tubes are made of seamless butyl rubber and are individually tested for top quality.

Continental tubes are made of seamless butyl rubber and are individually tested for top quality.

Continental tubes are made of seamless butyl rubber and are individually tested for top quality.

The Grand Prix 5000 is the best all-rounder in the field, brought to a whole new performance level. Ride faster, more comfortably, and with increased puncture protection. Its Active Comfort Technology absorbs vibrations and smooths your ride. Lazer Grip technology, designed to make you one with the road, features a lasered micro profile structure that expands over the tire’s shoulder and provides outstanding cornering. The Vectran Breaker is lighter, more flexible and protects more effectively against cuts than comparable nylon. With incredible tear resistance at a very low weight, it possesses exactly the right properties to be a premium puncture protection insert, while not adversely affecting rolling resistance. The Grand Prix 5000 Tubeless—made to make you better. With Continental's unique and legendary BlackChili tread compound, produced only in Germany, they have revolutionized the sport of cycling. This compound answers the eternal question of the best balance of grip and rolling resistance for cycling. Regular test wins confirm the measurable and noticeable advantages for cyclists, established in both the lab and on the road. The latest polymers, as well as specially developed carbon black particles and filler materials, guarantee ultimate performance.

CushCore tubeless air valves are specially designed to work with a CushCore tire insert. The air passageway is T-shaped, rather than a simple through-hole, which prevents the insert from obstructing air flow through the valve. - Made from CNC machined from 6061 T-6 aluminum, anodized black - Tapered rubber collar permanently bonded at the sealing interface - The valve core can be removed to add tire sealant - Valve locknut with o-ring seal and valve cap are included - Sold as a set

CushCore tubeless air valves are specially designed to work with a CushCore tire insert. The air passageway is T-shaped, rather than a simple through-hole, which prevents the insert from obstructing air flow through the valve. - Made from CNC machined from 6061 T-6 aluminum, anodized black - Tapered rubber collar permanently bonded at the sealing interface - The valve core can be removed to add tire sealant - Valve locknut with o-ring seal and valve cap are included - Sold as a set

- 44mm alloy valves with quality nitrile rubber seal. - Valve core tool included.

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 2.1 – 2.6" and rims with internal width 22 – 35mm Includes - 1 CushCore Insert - 1 CushCore Tubeless Air Valve - Installation Instructions

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 33mm to 46mm and inner rim widths 19mm to 26mm Includes - 1 CushCore Insert - 1 CushCore Tubeless Air Valve - Installation Instructions

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 2.6 – 3.0" and rims with internal width 32 – 45mm Includes - 1 CushCore Insert - 1 CushCore Tubeless Air Valve - Installation Instructions

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 1.8" to 2.4" and inner rim widths 22mm to 32mm Includes - 1 CushCore Insert - 1 CushCore Tubeless Air Valve - Installation Instructions

CushCore E-MTB is specifically designed for the increased weight and forces of an E-mountain bike. With maximum impact protection and durability, you’ll ride more laps, with less fatigue, and less worry. As our customers say, “It’s a no-brainer for E-MTBs.”

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - A specially designed tubeless air valve is included with each insert; allowing air to move through the valve without becoming obstructed by the insert - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 2.6 – 3.0" and rims with internal width 32 – 45mm Includes - 2 CushCore Inserts - 2 CushCore Tubeless Air Valves - 4 Rim Stickers - Installation Instructions

CushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration, and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. - The system is designed to be used with tubeless-ready or tubeless converted rims and tires and is compatible with tubeless tire sealants - A specially designed tubeless air valve is included with each insert, allowing air to move through the valve without becoming obstructed by the insert - The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim - Fits tire widths 1.8" to 2.4" and inner rim widths 22mm to 32mm Includes - 2 CushCore Inserts - 2 CushCore Tubeless Air Valves - 4 Rim Stickers - Installation Instructions