700c, 27-Inch & 650c

The GP Attack benefits from its special version of Continental's Black Chili Compound that gives the streamlined 23mm front tire more grip with lower rolling resistance. The optimum front tire gets you quickly into the turns, feeling light and responsive while providing ample life. The GP Force is a powerful rear tire and with its 25mm section combined with a fast Black Chili Compound, it gives excellent traction and road handling that’s second to none. Both tires are made with Vectran puncture protection and show wear and tear levels via indicators in the tread, details that show professionals are at work. *Includes both Attack (front) and Force (rear) tires.

Many of the fastest riders in the world place their trust in these handmade German tubulars. The Competition is a world-class tire proven everywhere from the cobbles of Paris-Roubaix to your local crit series. The 180-thread-per-inch, 3-ply casing offers a velvety-smooth ride and the Vectran sub-tread provides exceptional puncture protection, reduced rolling resistance and a great road feel.

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 MXP Tubular combines a unique tread pattern with our innovative tubeless casing to create an amazing all-conditions tubular. It excels on grass, loose dirt, sand, moderate mud, hard pack and pavement. The MXP is named after the airport code for Milan, Italy, site of a World Cup cyclocross venue that calls for an all-conditions tire. The tread features a classic profile with several modern updates. Precise grooves in the central chevrons allow the tread to flex and more aggressive side knobs offer traction and control beyond what you might expect. If you could only have one cyclocross tire in your quiver, the MXP is the one to have. Size: - 700 x 33mm Weight: - 378 grams Type: - Tubular Part #: - D50010 Product Features: - Center chevrons and staggered side knobs for all-conditions. - 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

Limus means mud in Latin, which is exactly what Challenge's Limus 33 Tubular tire dominates. Its deep, aggressive and well-spaced knobs cut through muddy ground and grip great. You'll be zooming through the corners and off-camber sections thanks to its grippy side knobs, and powering up inclines with ease thanks to the tall center knobs. It's built on Challenge's light and supple 300tpi hand-made SuperPoly casing with polyester-reinforced sidewalls, and there's an anti-puncture strip under the tread. You also get a latex tube. Latex tubes are lighter, thinner and more flexible than butyl tubes, increasing your comfort, lowering rolling resistance, and helping to prevent flats, too.

Race it hard or just head off the beaten path. Challenge's Strada Bianca gravel tire urges you to take the road less traveled. Challenge is world-renowned for their tubular tires, and these are prime examples of their trade, with the smooth riding characteristics and flat resistance that pros and enthusiasts expect. At a gravel and chip seal-smoothing 30mm wide, these tires have the extra volume it takes to comfortably fly over less-than-perfect surfaces. With their supremely supple 260tpi casing, hand-laid, high-mileage rubber tread, Paris-Roubaix-proven chevron tread, and double puncture barrier, the Strada Bianca tires offer incredible levels of control, puncture resistance, and comfort.

Tough rides call for tough tires, so if you're hitting the cobbles you better have Challenge's Paris Roubaix Tubular glued on your wheels. It has a wide profile to take the sting out of rough pavement and dirt roads, and puncture protection under the tread. It's hand made on their light and supple 300tpi SuperPoly casing with polyester-reinforced sidewalls, and a durable tread compound that sticks to the road in the corners. These tires also use latex tubes which are lighter, thinner, and more flexible than butyl tubes, increasing your comfort, lowering rolling resistance, and helping to prevent flats, too.

Challenge's Criterium is the choice of the pros. Countless victories and podiums have been been won thanks to its supple, core-spun cotton casing. It makes the tires race-day light, fast, and strong. This exceptional tire has a center tread that rolls quickly with a grippy side tread for excellent cornering. There's puncture protection under the tread, too. These tires us latex tubes which are lighter, thinner and more flexible than butyl tubes, increasing your comfort, lowering rolling resistance, and helping to prevent flats.

Whether it's fondos or races, Challenge's Strada Tubular tires are the choice of pros and enthusiasts alike. At 25mm wide, these tires smooth out rough pavement and chip seal. The core-spun cotton casing is light, supple, and offers an unparalleled ride. Pair that with a latex tube and you've got tires that carve the corners and feature incredibly low rolling resistance. The chevron tread provides excellent traction whether it's wet or dry. A puncture-protection belt under the tread protects your tires from road debris and helps you knock out the miles.

Hard-Case Lite with polyamide synthetic fiber reinforcement add puncture protection and durability to the super supple and fast rolling tread design. Key features: - Excels in cobbles and rough roads where traction and confidence matter most - High grip tread and compound performs in wet and dry conditions - Super supple polyamide synthetic fiber reinforcement for added casing strength - Hard-Case Lite protects against punctures with lightweight, sub-tread material - 38mm valve length with valve extenders available separately

Bontrager's R4 Tubular's race performance gives unequaled road feel yet is extremely durable for a racing tubular thanks to Hard-Case Lite protection. • Lightweight 320 tpi racing tubular • Excellent for road and criterium racing • Super supple polyamide synthetic fiber reinforcement for added casing strength • Hard-Case Lite has lightweight sub-tread material protecting against punctures

Blow through the muck in your next 'cross adventure with the unbeatable traction of Challenge's Baby Limus tires. - Use: Cross Racing: Sticky Mud - Size: 28 - Tire Width: 33 mm - Rim Width: 15-19 mm - Weight: 425 gr - TPI: 300 - Casing: SuperPoly - Flat protection: PPS - BAR: 1.6-6 - PSI: 23-90 - Inner tube: latex

Muddy courses aren't a concern with Vittoria's Cross XL Pro. With an aggressive tread designed to race in the mud and much the Cross XL is a top-tier choice for 'cross season. - 320 TPI Corespun cotton casing - Minimum tire pressure: 25 psi - 440 grams

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.

The ultra-fast semi-slick tread makes the Podium TT the perfect partner when the finish is only seconds away. The time specialist scores with its lightweight while offering the benefits of superior puncture protection. A real competition tyre for time trial specialists and triathletes.

• 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

Glue yourself to technical turns and gain speed on the course with Challenge's Baby Limus Open tubulars. - Use: Cross Racing, Sticky Mud - Size: 700C - Tire Width: 33 mm - Rim Width: 15-19 mm - Weight: 360 gr - TPI: 300 - Bead: Aramid - Casing: SuperPoly - Flat protection: PPS - BAR: 2-6 - PSI: 30-90

- Hutchinson's pioneering tubeless technology eliminates tubes for a lighter, faster accelerating wheel that can be run at lower pressures - Larger volume tire for training and comfort on rough roads - Special bead compound and a thin layer of rubber inside the casing seals the tire - Thermoplastic reinforced compound for maximum wear - 127 tpi casing

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 - OneStar Compound

Even on bad roads, Challenge's Strada Open Clincher rides great because it has a rounder profile to take the sting out of rough pavement and dirt roads. It's hand made on their lightweight, supple 260tpi SuperPoly casing with tough polyester in the sidewalls, and a long-wearing and grippy tread compound for excellent performance. There's also a layer beneath the tread to help prevent flats.

The Sprinter GatorSkin inherits the best qualities of the ever-popular original Sprinter, namely the durable tread compound and effective puncture resistance. GatorSkin simply adds confidence-inspiring durability and the sidewall protection of DuraSkin to an already race-proven winner. Pro riders use a similar combination in their tires for Paris-Roubaix and other equipment-destroying classics in the springtime. If you want to get the miles in, but your streets aren't covered with the finest tarmac, this is your tubular.

Proven WTB performance now expanded to high-end road that won’t fall apart when taken past the traditional tarmac. The all-new, multilayered construction of the tubeless Supple Casing delivers a soothingly smooth ride quality without deteriorating under varied conditions. Elite-level road meets renowned tubeless simplicity in sizes that accommodate exploration while digging deep on lonesome roads. Exposure tires are available in 30, 32 and 34mm for the ultimate versatility in road tires...meaning big days and few boundaries. Usage: Endurance Road / Mixed Terrain / Gravel Race Conditions: Pavement / Light Gravel Compound: Distance+ Casing: Supple - 700 x 30c: 310g - 700 x 32c: 315g - 700 x 34c: 370g

Challenges Gravel Grinder Open Tubular is the tire you need to make your mark in the gravel racing scene. It pairs Challenge's supple 260tpi tire casing with a smooth-rolling center tread and aggressive shoulder knobs for great riding characteristics, high speeds, and excellent cornering traction.

Challenge's Almanzo is a wide-profile, versatile, multi-surface tire that excels when the road is less than perfect. It's great on dirt and in situations where you just don't know what the next mile will throw at you. The center tread rolls fast, while the shoulder knobs corner great. It's hand made on Challenge's supple and light 260tpi SuperPoly casing with double puncture protection, tough polyester in the sidewalls, and a durable tread compound that sticks to the road in the corners.

- Proven Paris-Roubaix tread pattern with lower wearing tread - Handmade with a latex inner tube and hand glued natural rubber makes this tire super supple and fast - Double puncture protection offers the highest level of protection against punctures - Use: Rough Road, Cobbles, Big Riders, Hard Packed Dirt - Size: 28" - Tire Width: 36 mm - Internal Rim Width: 17-23 mm - Weight: 355 gr - TPI: 260 - Bead: Aramid - Casing: SuperPoly - Flat protection: Double PPS - BAR: 3-6 - PSI: 45-90

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

The R4 clincher's race performance gives unparalleled road feel yet is extremely durable for a racing clincher, thanks to Hard-Case Lite protection. The Hard-Case Lite sub tread material protects against punctures in the peloton and up the hardest and sketchiest road climbs. - Lightweight, 320TPI, hand-built clincher - Excellent for road and criterium racing - Super supple polyamide synthetic fiber reinforcement for added casing strength - Hard-Case Lite protects against punctures with superior, lightweight, sub-tread material - Clincher tire made using the same handmade process as tubulars to maintain suppleness and ride quality

Bontrager's R4 clincher gives unequaled road feel and racing performance in an extremely durable hand-built tire thanks to Hard-Case Lite protection. • Lightweight 320 tpi hand-built clincher • Excellent for road and criterium racing • Super supple polyamide synthetic fiber reinforcement for added casing strength • Hard-Case Lite has lightweight sub-tread material protecting against punctures

A hand-built road tire with a supple, lightly treaded design that offers uncompromising speed, traction, and confidence. Confidence at speed The cobbles of Paris-Roubaix were the inspiration for the R4 Classics tire. Confident traction and a fast-rolling yet grippy tread give this hand-made road tire uncompromising performance and road feel, and Hard-Case Lite with polyamide synthetic fiber reinforcement adds puncture protection and durability. - Fast rolling road race tire for when traction and confidence matter most - High grip tread and compound performs in wet and dry conditions - Super supple polyamide synthetic fiber reinforcement provides added casing strength - Hard-Case Lite protects against punctures with lightweight, sub-tread material - Super supple 320TPI casing rolls fast with great ride feel - Clincher tire made using the same handmade process as tubulars to maintain suppleness and ride quality

Your search for an intermediate, all-conditions 'cross tire is over! Challenge's Chicane can tackle it all, whether the course is dry and fast, or thick with mud. The grippy side knobs ensure you stay upright in every technical turn, and the center file tread rolls fast and smooth. It's built on Challenge's light and supple 300tpi hand-made SuperPoly casing with polyester-reinforced sidewalls, and there's an anti-puncture strip under the tread. Open tubular tires feature many benefits of traditional tubular tires, but with the low maintenance and ease of installation of clincher tires.