700c, 27-Inch & 650c

The Espoir Sport is a reliable road tire that's ideal for ambitious training and high-mileage rides. It features a durable compound with low rolling resistance and plenty of grip. And with our BlackBelt X 2 flat protection, you also gain reliability and durability where it counts. - Casing: 60 TPI - Bead: Wire - Compound: 70a - Flat Protection: BlackBelt X 2 - 700 x 23mm, PSI 110-125, approximate weight 340g - 700 x 25mm, PSI 110-125, approximate weight 370g - 700 x 28mm, PSI 85-95, approximate weight 400g - 700 x 30mm, PSI 85-95, approximate weight 435g

45NRTH's Gravdal welcomes you to the world of high-performance commuter tires. 252 Studs are carefully positioned across the 700c x 38mm casing profile to yield a high level of confidence and safety. Siped tread lugs and oval-shaped stud groupings provide exceptional cornering, braking and acceleration traction. Run the Gravdal at minimum pressure for unmatched traction performance, and maximum pressure for a quieter and faster ride on clean roads.

Gravel road riding is all the rage at the moment. It's great for cyclists who want to leave sealed roads behind and enjoy the freedom of cycling on unpaved roads. Designed to suit diverse touring styles, the GravelKing uses a mixture of properties that also accommodate on-road cycling. Featuring ZSG Natural compound, anti-flat Casing, and Advanced Extra Alpha Cord. - Black multi-use gravel tread - Aramid (Kevlar) folding bead

Specialized's S-Works Turbo 2Bliss Ready tire sets the standard for how a modern day performance road tire should perform. It's fast, light, and supple, making it not only the fastest tire we've ever made, but also the fastest tire in the world. It features extremely low rolling resistance and superior cornering traction. And with its 2Bliss Ready design, you're able to run lower pressures for more grip and traction, while all but eliminating the risk of pinch flats. So no matter if you're climbing with the best of them or descending like a rider possessed, this is the tire for anyone who demands nothing short of the best. - Casing: 120 TPI - Bead: foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON - Flat Protection: BlackBelt - 700 x 28mm; psi 85-95; approximate weight 285g

Continental's Gatorskin combines 3 flat-protection technologies into one fast-riding, high-mileage racing and training tire. It features a super-fine 180 thread-per-inch casing, a bead-to-bead layer of DuraSkin, and is finished with a Kevlar-reinforced top layer. The result is a light tire that rolls and corners with the best of them while providing flat protection second to none. - Weight: 290/310/360/365/390 grams (23c/25c/28c/32c/27 x 1 1/4) - PolyX puncture protection - DuraSkin sidewall protection

There are routes covered with jagged flint rock, where the wind is unforgiving, and the destination is far beyond the horizon. For the toughest days of gravel, when winning looks like finishing, we created the Cannonball. We designed the Cannonball to accommodate modern gravel rigs whether you’re racing Dirty Kanza, Trans Iowa, or Mid-South… it’s conquered them all. The directional, tight-knit center tread efficiently decreases rolling resistance while the side knobs increase cornering traction. The center tread’s diamond pattern is optimized specifically for gravel riding and sheds dirt and gravel debris. - Light and Supple—When extra puncture protection isn’t necessary, our light and supple casing offers decreased weight and a comfortable, ultra-supple ride quality at lower pressures when set up tubeless. - Durable Sidewall—This construction consists of a robust woven nylon composite reinforcement between the outer rubber and the inner casing within the tire’s sidewalls to prevent tearing and abrasions.

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

Conquer ice, conquer snow, conquer winter riding! Commuting to work or school on ice just got faster and easier with 45NRTH's Xerxes. 140 steel-carbide studs provide unrivaled control and durability, while the ultra-narrow profile easily slices through snow to provide extreme traction in every winter condition.

The Pasela ProTire is available in a wide range of sizes. It incorporates ProTite technology for puncture protection and has two excellent all around tread patterns. A series renewal offering the same basic performance with enhanced puncture resistances. - Urban/Commuter tire - Steel (Wire) bead - 45-90 PSI

Serfas' Seca Wire Bead Road Tire is the ultimate training and commuting tire. Its center hard tread offers low rolling resistance and long life while its softer sides provide excellent cornering. This tire also boasts Serfas' superior flat protection.

- Versatile tread pattern suitable for a broad range of conditions - Medium-height center knobs are ramped to reduce rolling resistance and are staggered to provide a consistent feel across the profile of the tire - Side knobs are fairly aggressive and provide excellent cornering grip - Available with a wire bead or folding bead with EPS puncture protection

Serfas' Vida Hybrid is the perfect tire for commuting, touring and everyday riding thanks to Serfas' Flat-Protection System, a durable rubber compound for long life, and a grippy tread for excellent all-around handling on all surfaces.

Specialized's Turbo Pro tire is a competitive clincher that utilizes many of the same features found in their S-Works version. After all, competitive riders need a fast, light, and tough tire, and the Turbo Pro is all three. With its flawless tread, supple casing, and unrivaled GRIPTON compound, it features an extremely low rolling resistance and superior cornering traction. Put it all together, and you'll be climbing and descending with confidence and speed. - Casing: 60 TPI - Bead: Foldable - Compound: GRIPTON - Flat Protection: BlackBelt - 700 x 24mm, PSI 100-125, approximate weight 240g - 700 x 26mm, PSI 100-125, approximate weight 250g - 700 x 28mm, PSI 85-95, approximate weight 280g

This race-day specific weapon has raised the bar on tire technology. The Corsa Speed uses a proprietary Graphene compound, which is then paired with an ultra-fine Corespun-T casing. The end result is a tire that maintains the lowest rolling resistance, while still providing the trademark Corsa suppleness, and outstanding wet weather grip - 320 TPI Corespun cotton casing - Proprietary Graphene compound - Lightweight, flexible latex inner tube

BOS is the airport code for Boston, Massachusetts, the original hotbed of North American ‘cross and home to some of the harshest weather and the toughest courses. If you’re pinning on a number in New England you better be ready for rain, roots, ruts and mud. And, you better have a set of Donnelly BOS tubulars in your quiver. This tire is even more aggressive than our mud-proven PDX. It features buttressed side-knobs for outstanding traction in super muddy corners and off-cambers, and a center tread pattern that is all bite when it comes down to a tractor pull. Size: - 700 x 33mm Weight: - 386 grams Type: - Tubular Part #: - D50030 Product Features: - Buttressed side-knobs for superior cornering traction. - Unique center knob pattern designed for maximum traction when you need it most. - Soft rubber compound provides extra grip and shock absorption. - Tubeless design means an airtight casing with no inner tube to puncture. - Rubber-coated sidewalls are extremely durable and prevent deterioration from water, mud and dirt. - No additional sidewall coating necessary. - All in one construction means tread will not peel away from the tubular casing. - Precision design creates a straight tire with no variances in size or alignment. - The tire and base tape are consistently straight making it easy to glue and install to your wheel. - A removable valve core allows for valve extenders installation as well as insertion of tire sealant. - Liquid sealant can be used with all Donnelly tubulars to prevent or repair typical punctures.

The MICHELIN Protek Max provides excellent grip on wet and slippery surfaces thanks to its rubber compound and progressive siping with more grooves on the shoulders. Protek Max tires feature MICHELIN's Protek tread design, with a uniform center pattern, that provides improved comfort and performance. A super-durable 5mm puncture protection layer helps to ward off punctures. - Smooth, siped tread rolls fast and grips the road well in wet conditions - 5mm puncture protection ply underneath tread - Reflective strip on sidewalls to provide added low light visibility - Long wearing tread compound Weights: 26 x 1.4 (750g) 26 x 1.85 (1235g) 700 x 28c (725g) 700 X 32c (740g) 700 x 35c (850g) 700 x 38c (950g)

Designed for race day, the Tangente Speed is optimized for aerodynamics, rolling resistance and road feel with clincher convenience. - Rubber formulated for grip and acceleration - 220 TPI nylon casing - New aero tread pattern - Intended use: racing - Very low rolling resistance to save power - Optimized for dry road conditions - Sidewalls designed for supple and compliant ride feel

Schwalbe's Marathon Plus is legendary for durability and protection. Their nearly impenetrable 5mm-thick SmartGuard layer almost eliminates flats over the course of the tire's excellent, long life. Whether you're setting out on a cross-country bike tour, cruising on a tandem, or just want peace of mind during your daily commute, the Marathon Supreme is in it for the long haul.

Schwalbe's Marathon is the archetypal touring tire. Their highly elastic, 3mm India rubber GreenGuard layer almost eliminates flats over the course of the tire's excellent, long life. Whether you're setting out on a cross-country bike tour, cruising on a tandem, or just want peace of mind during your daily commute, the Marathon Supreme is in it for the long haul.

The Pasela ProTire is available in a wide range of sizes. It incorporates ProTite technology for puncture protection and has two excellent all around tread patterns. A series renewal offering the same basic performance with enhanced puncture resistances. - Urban/Commuter tire - Aramid (Kevlar) folding bead - 40-90 PSI

It’s all in the name, ThickSlick. Made with a burly casing designed to withstand the roughest urban conditions, while the no-nonsense, slick design provides the bite you need in the concrete jungle. Need more rubber? The nearly indestructible Flat Guard level, with its Urban Armor Casing and added rubber everywhere, provides optimal protection to contend with any city streets. It's no one wonder why this tire has a cult following among couriers, those not wanting to deal with flats, and value-conscious consumers. ThickSlick Benefits: - Puncture Protection: The thicker a tire, the harder it is for glass, pins, staples, and other urban unpleasantries to worm their way in. - 2x the Rubber: Twice the rubber tread equates to twice the lifespan of a tire. This means your price is 50% off the competition. - Smoother Ride Quality: Twice the rubber makes for a smoother ride through the natural absorption qualities of rubber. - Usage: Urban, Recreation, Utility - Conditions: Road

Based on Specialized's World-Cup-winning Renegade mountain bike tire, the Tracer Sport is a great all-around tread. Its well-spaced, low-profile knobs zip over hardpack and still have enough bite to provide outstanding braking and sensational grip in the corners.

The Slick is the tire for those year-round, all-weather commuters. The Slick utilizes a smooth center for rolling efficiency and deep outer grooves for enhanced control in wet conditions. - Usage: Trekking / Comfort - Conditions: Dry to Wet / Pavement - Compound: Distance - Casing: Durable - Bead: Wire - 26": 540g - 29": 979g - 700c: 505g

The RiBMo is the essence of what a good urban tire is. A perfect blend of weight to strength and riding comfort with the proprietary ProTite Tech puncture material. - Urban/Commuter tire - Aramid (Kevlar) folding bead - 60-95 PSI

- The Eddy Current's solid appearance comes from the stable blocks, more rubber and the big widths. - It allows uncompromising riding even uphill, takes fierce acceleration as well as technical riding on the trails. - Blocks up to 20% more massive than other Enduro/All Mountain profiles. - Aggressive arrangement, open design and concise V-Grooves in the center and side blocks for direct, precise steering characteristics and perfect transmission of engine power to the ground, with extreme durability.

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, a Puncture Protection System placed between the tread and casing to increase resistance to punctures. Handmade - Handmade tires combine many attributes to create the most comfortable and lowest rolling resistance tires. PPS - The Puncture Protection Strip is a special fabric placed between a tire's tread and casing to increase resistance to punctures.

Limus means mud in Latin, which is exactly what Challenge's Limus Open tire excels in. Its deep, aggressive, and well-spaced knobs cut through muddy ground to grip great. And, you'll be zooming through the corners and off-camber sections, too, thanks to its side knobs, while you'll power up inclines with ease thanks to the tall center knobs. The Limus is built on the same supple 300tpi hand-made casing as their renown tubulars, and there's an anti-puncture strip under the tread and polyester in the sidewalls for excellent durability. Handmade - Handmade tires combine many attributes to create the most comfortable and lowest rolling resistance tires. PPS - The Puncture Protection Strip is a special fabric placed between a tire's tread and casing to increase resistance to punctures.

Every watt, every bit of energy counts whether you're racing or training; make sure you're getting the biggest aero advantage with Zipp's Tangente Course Tire. It takes advantage of Firecrest technology to reduce rolling resistance and increase airflow over the leading edge of the tire, meaning you work less to go faster. The rubber used in the Tangente tire is formulated for grip and acceleration, particularly in dry conditions, and the 120 TPI casing features a nylon puncture protection strip so you get as many miles as possible out of this rugged tire. It's light too, complementing your already feathery race day rig.

- 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

The Energizer Plus has an ultramodern, dynamic touring profile with a smooth center section and strong diamond sides. It rolls easily on the road and has good grip, even on unpaved ground. The newly created Addix E-Compound is specially optimized for maximum durability, low rolling resistance and exceptional grip even at high speeds.