700c, 27-Inch & 650c

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 Power All Season provides exceptional grip, low rolling resistance, and outstanding puncture protection. - MICHELIN Grip compound rubber to provide low rolling resistance, and provide extra grip in wet and cold conditions - Triple layer 60 tpi casing with puncture-resistant crown ply for comfort and durability - Tread siping on shoulders to provide additional cornering traction - Aramid Protek + belt under tread and shoulders to provide puncture protection - Tread Wear Indicator molded into tire tread - Tire Bead: Folding - Tire Type: Clincher Weights: 700 x 23c (235g) 700 x 25c (270g) 700 x 28c (295g)

Gravel and dirt road racing tire - Dual-Compound for longevity - Gravel-specific tread pattern - Tubeless Ready (TR) Maxxis' first gravel-specific tire, the Rambler, is designed with the volume you need for comfort and the tread you need for speed and control. Tightly packed center knobs are ramped for rolling efficiency on hardpack roads, and spaced-out side knobs provide predictable cornering in varied terrain.

- The Cinturato Velo is designed around reliability in bad road conditions and heavy usage as priority and it still keeps Pirelli DNA thanks to its SmartNET Silica compound and confidence-inspiring handling. - Its patent pending Armour Tech construction combines a bead-to-bead high density layer to an aramid breaker and aramid fibers dispersed into the tread. - The SmartNET Silica compound coupled with Pirelli long experience in tread design, adds the safety and handling in any condition, whether it is wet or dry, Pirelli is already famous for.

The Zipp G40 XPLR is a wide (40mm) tire designed for control, which translates in the gravel world to higher overall speed. In developing this tire, Zipp began with a speed-carrying chevron center-tread pattern that transitions to an inverted soccer cleat design, then added XC-style knobs on the edges that offer the ability to dig in when you need it. And, amid all this, durability was crucial. The tire's casing and bead-to-bead puncture protection strip navigates the fine line between supple and stiff so that grip and performance do not suffer while making an incredibly durable gravel tire. The tire's 40mm width was carefully selected to be most effective with its tread pattern while also fulfilling riders' evolving preferences for wider tires during gravel events and off-pavement riding. It's just what you need for gnarly, all-day riding. It performs exceptionally well with Zipp's widest and most versatile 700c rim, the 303. - High-performance gravel and adventure tire - Aggressive cornering side knobs for excellent control - Fast-rolling center section - 30-65 psi - Tubeless Ready, tube compatible - Hookless compatible - ETRTO 40-622 (700x40c) - 120 TPI - Tan sidewall - Aramid bead-to-bead puncture protection that is very resistant to sidewall cuts - Hookless compatible - Weight: 480g

The Kenda Klondike is a great winter tire for cyclocross or trekking-commuter bikes in light snow. Carbide tipped studs provide traction on ice. - 100 polymer-body carbide tip studs

• Advanced tread profile and texture gives low rolling resistance with excellent cornering grip • Butyl-lined casing improves air retention for consistent tubeless ready performance • TLR - Tire is engineered for use with Bontrager TLR Sealant as the final step in a worry-free, tubeless setup • Hard-Case Lite - Lightweight sub-tread material protects against punctures

Continental's ultra-tough Gator Hardshell combines 3 flat-protection technologies into the ultimate distance and training tire. It features a flat-busting, bead-to-bead layer of DuraSkin and an extra-wide Poly-X Breaker anti-puncture strip. But Conti wasn't done yet. They added material in the tread to improve mileage and lend another level of puncture resistance. Plus, the folding bead keeps the weight low. Weight: 23c: 250 grams 25c: 270 grams 28c: 350 grams 32c: 385 grams

When there is mud on the course the Donnelly PDX is the tire of choice. It’s race-proven PDX tread and innovative tubeless design create the ultimate tubeless ready cyclocross tire. PDX is the airport code for Portland, Oregon, where frequent rains create some of the muddiest cyclocross courses you’ll find anywhere. Although the PDX excels in the mud, this tire is truly an all-conditions performer. The center knobs are aligned to give you a fast roll on hard pack and pavement, no matter what the weather conditions. Aggressive side knobs offer superior cornering, and the leading edge of the knob gives you extra traction for acceleration out of the corner. Whether it’s mud, loose dirt, snow or sand, the PDX can handle it all. Size: - 700 x 33mm Weight: - 426 grams Tire Type: - Tubeless Ready Part #: - D10012 Product Features: - Tall and widely spaced knobs for superior mud clearance and traction. - Center knobs are aligned for fast rolling. - Side knobs offer superior cornering. - Soft rubber compound provides extra grip and shock absorption. - Tubeless-ready design mounts easily to most tubeless ready rims. -Tubeless casing is reinforced for wear, features an Aramid bead. -Precision design creates a straight tire with no variances in size or alignment. - Can be used tubeless or with a tube.

- An adventure tire designed for mixed conditions - Smooth-rolling center knobs and aggressive shoulder lugs - The combination of smooth-rolling center knobs and aggressive shoulder lugs provide great traction and durability for gravel roads, trails, cyclocross, urban assault and even pavement - The MSO will fit on your cyclocross or gravel bike, commuter, or touring rig - MSO is the airport code for Missoula, Montana, home of the Adventure Cycling Association and the inspiration for countless cycling journeys - Designed to bridge the gap between pavement and blazing your own trail

Puncture protection and mileage are the strengths of Hardshell-ProTection. A wider PolyX Breaker, the specialist against punctures under the tread center and shoulders, provides for great reliability. The three-ply—each layer with 60 TPI—carcass covers the entire tire and makes it a real bastion against urban detritus. The outer sidewalls of the tire are reinforced with DuraSkin fabric, providing even more reliability due to the casing being so well protected. Hardshell tires are the puncture-resistant flagship amongst racing tires—produced exclusively in Germany. - Ideal when it comes to extremely long service life, for the next tour or the commute. - Made for rough surfaces and rugged tarmac.

The Corsa Control tackles greasy cobbles and rough roads with all the confidence of the Vitttoria's classic Corsa. This chevron tread pattern adds dynamic performance to the Corsa Control tread, allowing for increased grip on slippery surfaces, as well as added durability. - 4 separate Graphene compounds deliver speed, suppleness, durability, and reliability - Corsa level confidence for rough roads - Reinforced Corespun-K casing for increased sidewall protection

Premium tire for cold seasons Full control on slippery, snowy roads and dank surfaces thanks to its grippy lamellar tread pattern. Riders of this tire benefit from our know-how as a leading manufacturer of winter tires for cars and trucks. - Vectran breaker for lightweight puncture protection with minimal effect on ride quality - ECE-R75-certified: Recommended for e-bikes up to 50km/h.

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—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.

Bontrager's R4 Aero Tire is all about making you faster and more efficient. Its 220tpi casing creates less drag and provides a supple road feel you'll love, while the tread minimizes rolling resistance and grips great in the corners. The R4 Aero also features integrated flat-tire protection. Plus, this amazing tire has Bontrager's unique aero wing design that saves you energy mile after mile. In fact, it has been tested to save over three minutes in the bike leg of the Ironman Triathlon! No wonder Keith Bontrager himself calls the R4, "the World's Fastest Tire."

The Schwalbe One family provides the right tire for the latest gravel bike trend. The smooth rolling G-One profile and Tubeless Easy technology make it a pleasure to ride over forest paths and rolling fields. - MicroSkin Casing

Push past punctures on the R3 Tubeless Ready. These tires feature a durable, yet fast, tubeless ready design so you can run lower tire pressures for increased traction, comfort, and control. - Low rolling resistance with excellent cornering grip - Butyl-lined casing improves air retention for consistent tubeless ready performance - Tubeless Ready (TLR) tire is engineered for easy tubeless setup and puncture protection - Hard-Case Lite protects against punctures with lightweight, sub-tread material

The Corsa has been the race-day choice of pros for years and is now better than ever with 4C Graphene compound technology! The latest Corsa is an evolution of the brand and brings multiple industry-first technologies to market. Starting with our supple yet durable 320 TPI Corespun-K reinforced casing and adding a proprietary mix of 4 different Graphene compounds, the new Corsa achieves the holy grail of performance: speed, suppleness, durability, and reliability. Whether winning a Grand Tour or a local crit, the Corsa family delivers world-class performance. - 4 separate Graphene compounds deliver speed, suppleness, durability, and reliability - Reinforced Corespun-K casing for increased sidewall protection - Folding bead