700c, 27-Inch & 650c

Challenge's Grifo 33 Seta Extra Tubular boasts a tread that excels in snow, mud, grass and firm dirt. It's also built on their light and supple 260tpi hand-made silk casing for an awesome ride quality. Plus, there's an anti-puncture strip under the tread and polyester in the sidewalls for extra durability. 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.

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.

Continental's Attack Comp is designed for use as a front tire. It's hand made in Germany and features their Black Chili rubber compound for excellent performance, their Vectran Breaker puncture protection, and a supple 3-ply, 110 thread-per-inch casing for sweet compliance to smooth every ride. It also boasts Conti's TirePositioningSystem (TPS) to maximize its aerodynamics and cornering.

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 the local crit. 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.

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.

Take one of the fastest tires out there, dial it in for all-out speed events, and you have Vittoria’s Corsa Speed G+. Profiled to take advantage of wider modern rims, it reduces wind drag while remaining fast-rolling. Rolling resistance is dropped even further by Vittoria’s G+ graphene rubber compound, a groundbreaking technological advance that creates a tire with ultra low rolling resistance on straightaways and tenacious traction under braking, acceleration, and cornering, giving you the best of both worlds in a single race-ready tubular. When speed is all that matters, Corsa Speed is the only tire that matters.

- MXP is the airport code for Milan, Italy, a World Cup venue that calls for an all-conditions tire that excels in loose dirt, sand, moderate mud, hard pack, snow, grass, and pavement - Tubular version features a durable rubber coating to prevent deterioration from water, mud, and dirt - Based on the classic Grifo, with updated central chevrons to allow the tread to flex, and more aggressive side knobs - Weight: 366 grams

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

The Corsa has been the race-day choice of pros for years, and is now better than ever with 4C G+ 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 ISOtech 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. - The world’s best tire just got even better! - 4 separate Graphene G+ ISOtech compounds deliver speed, suppleness, durability, and reliability - Reinforced Corespun-K casing for increased sidewall protection - World Class performance for the world's best athletes

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.

For the ultimate in road feel and confidence, ride Maxxis' tubeless Padrone TR tire. Going tubeless, you not only remove the weight of the tube, but pinch flats are a thing of the past. Also, the tire conforms to the road better for a ride quality that once felt, you'll never want to go back. This tire goes from long training rides to fast races easily with its dual compound that provides enhanced wear life and improved cornering control. It also uses their Silkworm material for puncture protection, along with a high-strength carbon fiber bead to keep the weight down.

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.

Maxxis brings radial construction to a bike tire for a ride you have to feel to believe. The tubeless-ready Radiale smooths rough pavement by allowing the sidewall to bend and flex with ease. Its 120TPI casing delivers a supple road feel with fast-accelerating low weight. Maxxis adds their 3C Triple Compound Technology with a fast-rolling center section and softer sides for sure-steering in the corners. Plus, Silkworm puncture protection from bead to bead wards off flats. - Folding bead - Weight: 280g (700 x 22c), 305g (700 x 24c)

When you roll up to the starting line, you know you've got an aero advantage if your wheels are wrapped in Zipp's Tangente SL Speed Tubular Tire. The 320 TPI cotton casing is tough enough to tackle the ugliest stretches of blacktop, while the puncture-resistant belt keeps you inflated and rolling through the finish line. Zipp focused on improving leading edge airflow to get you that aero advantage, and the low rolling resistance saves power so you go faster longer. They even formulated rubber specifically tailored for grip and acceleration you'll notice as you're sprinting for the line. Your tires link you to the pavement; make that link as efficient as possible with the Tangente.

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

• 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

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.

- 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 next evolutionary step. Anyone who wants to exploit the potential of modern tire technology wholeheartedly rides Tubeless. Tubeless tires guarantee the lowest rolling resistance while maintaining a very high puncture resistance. Now all sizes of Marathon Almotion are equipped for tubeless operation. The patented Microskin construction tires are also significantly lighter. Of course, a normal tube can also be used. - V-Guard - OneStar

Schwalbe's Marathon Mondial is the ultimate touring tire ready to travel the world if you want. Handling is great thanks to their TravelStar rubber compound, and their Double Defense technology keeps it relatively light and high-performance while maintaining excellent puncture protection. 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 Mondial is in it for the long haul.

- For a safer journey. You have full control on icy roads with the Marathon Winter Plus. - For best possible puncture protection, it comes with a SmartGuard layer. - Spikes work best on ice at the minimum pressure - At max pressure, noise is reduced to a minimum on ice-free roads.

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.