700c, 27-Inch & 650c

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 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 Schwalbe Durano Performance Line Tire is a true mile eater. This popular option sports a few outstanding qualities: extremely high mileage construction, dual compound for best grip - even training on wet winter roads. It has has a proven RaceGuard protection belt for extra security out on the road.

Pasela is Panaracer's standard all around touring or urban commuting tire. Its comprehensive size range ensures that you can find a Pasela for most any usage. Ride it and trust it. - Urban/Commuter tire - Steel (Wire) bead - 65-100 PSI

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 SS and SS+ feature an all-new tread pattern consisting of a smoother, diamond pattern center with more aggressive side lugs. - This tread pattern allows the rider to keep speed going into corners and maintain control throughout any transition a gravel ride could present. - The GravelKing SS incorporates a supple 126 TPI casing with a nylon puncture resistant belt and Panaracer's proprietary ZSG (Zero Slip Grip) compound. - The SS+ uses the same build as the SS but adds a bead-to-bead layer of Panaracer's ProTite puncture material for even more protection against tread and sidewall cuts for those extra demanding courses or rides with sharp flint rock.

Built on the same concept as our Gravelking and Gravelking SK models, the EXT version incorporates the same technology on top of a specially designed tread tailored to work best in muddy and sloppy conditions. - Ideal for gravel and dirt, mud and loose conditions - Available in Black Tread and Black or Brown Wall Colors - Folding (Aramid) Bead - Available in 700 C and a variety of widths - TLC in widths 33 mm and larger

- Perfect for commuting and training

The name Revolution explains it all: a tread design that rolls faster than a slick while providing traction in a range of conditions. Micro-effective edges form a staircase of grooves in the direction of cornering force and channel water away from the center. E-bike compliant Graphene compound rolls fast, and when used on an e-bike, extends battery life. Reflective sidewall stripe increases your visibility for oncoming motorists. The Solid Shielding puncture protection layer makes punctures a thing of the past. As with all Vittoria Tech Series tires, the mix of performance and durability add up to a great value. - Graphene compound is regulation compliant for e-bike use - Reflective sidewall stripe for safety

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.

If you are searching for excellent quality for intensive use, look no further than the Schwalbe Big Ben. The Big Ben has the same comfort as its elder sibling, the Big Apple, but the profile is more focused and sized down.

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

The Shakedown is a hybrid tire made for light gravel and touring. - Ideal replacement tire for casual touring, road or pavement use - Clincher design - 33 TPI

- Long-lasting and durable tread compound for wear life - Puncture-resistant belt all but eliminates flats - ECE-R75 (European Certification e-bikes)

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.

- All day protection and comfort for dirt and gravel - Super strong anti-flat casing

Schwalbe Pro One Road Tire is a fast, reliable, and light tire. the Pro One remains controllable at all times - on the fastest descents, in extreme cornering, in all conditions. - Minimal rolling resistance - All-around cut resistance and puncture protection - ISO Diameter: 622 / road / 29" - Tire Intended Use: Road - Tire Type: Clincher Tire - Type: Folding - Tire Diameter: 700c - Weight: 215g - Pressure: 6.0-10.0 Bar (85-145 psi) - Maximum load: 70 kg ADDIX Race Compound Offers tenacious grip at high cornering speeds and extensive durability in E-operation. Evolution Line The very best possible. Highest grade materials. Latest technology. V-Guard Extremely lightweight and cut-resistant high-tech fabric. Soupless Carcass Souplesse Carcass Construction Special turn-up construction for an exceptional riding experience in race tires.

The G-One Bite feels pretty good on the road, but its true strength comes through off-road. Constructed for more off-road use than its stablemates, the open tread design and strong outer blocks provide stability when cornering and deliver this G-One the perfect "Bite".

- Smart DualGuard Protection - Addix-E Compound - ECE-R75 certification makes the tires ready for E-Bikes of all classes

- Angled side knobs work together with the Super Race carcass to create the best cornering grip. - Super Race carcass (Souplesse construction) for a particularly smooth ride with low rolling resistance and high puncture protection. - New boomerang profile for the best uphill traction and ideal rolling behavior. Specs: - Tire Diameter/ISO: 700C/622 - 67 TPI - Bead: Folding - Tire Compound: Addix Race - Tire Technology: Super Race, TL Easy - Tire Type: Tubeless Ready - Tubeless Technology: Tubeless Easy

- Makes the perfect economical trekking tire - The Excel has a reflective stripe on the sidewall, keeping you visible at night for city riding - If getting a reliable, high-performance trekking tire at an economical price is what you're after, the Overdrive Excel is the tire for you.

The Knard is a tire that just makes sense. With its tightly-spaced, low-block tread pattern, it provides the perfect ratio of traction and low rolling resistance. It grips well on all sorts of different surfaces and will haul some sausage on hardpack terrain or groomed trails. If you want a tire that has a little less bite and a bit more speed but don’t want to sacrifice traction, look no further. With sizes ranging from a svelte 41mm all the way up to a hefty 4.8”, there’s a Knard to solve all your fast-rolling needs. - Folding bead - Casing: 60 TPI - Max pressure: 75psi - Weight: 660g

When you’re out on a ride the last thing you want is to be limited by your tires in any way. Our ExtraTerrestrial Tires were designed to let you ride without limits by simply following the only tenets we have for tire design: they’re high volume and they kick ass. The ExtraTerrestrial tire was meant to serve as a heavy-duty off-road touring tire that shines on hardpack surfaces. It uses a nylon breaker in the sidewalls for cut protection, a molded pattern for anti-cut propagation, and a Kevlar cap under the tread to protect against flats. The ET Tire uses a distinctly directional tread pattern and its width yields more traction than you might expect from a tire with such little rolling resistance. The tread is low profile with a file tread in between tread blocks. The ExtraTerrestrial tire has enough width and traction for the soft stuff and won’t bog you down on smooth or hard surfaces. - Folding bead - Casing: 60 TPI

- The SS and SS+ feature an all-new tread pattern consisting of a smoother, diamond pattern center with more aggressive side lugs. - This tread pattern allows the rider to keep speed going into corners and maintain control throughout any transition a gravel ride could present. - The GravelKing SS incorporates a supple 126 TPI casing with a nylon puncture resistant belt and Panaracer's proprietary ZSG (Zero Slip Grip) compound. - The SS+ uses the same build as the SS but adds a bead-to-bead layer of Panaracer's ProTite puncture material for even more protection against tread and sidewall cuts for those extra demanding courses or rides with sharp flint rock.

AW3 is the set-it-and-forget-it tire for road riders and commuters. It rolls fast and keeps the flats away with improved Hard-Case Lite puncture protection. Plus, it's made with a proprietary TR-Endure rubber compound and a lightly treaded design for confidence and traction. - Leading puncture protection with traction for confidence in all conditions - Improved Hard-Case Lite puncture protection provides best-in-class defense against flats - Proprietary TR-Endure compound delivers long lasting-traction in all conditions - Smooth-rolling, lightly treaded design with siping channels for traction and all-weather confidence

- Never before has an entry-level model from Schwalbe been so good! - This update was really worth it. - The K-Guard puncture protection, a smooth 50-EPI carcass and the improved Silica compound give the Lugano II impressive race performance at an excellent price.

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.

This new version of the proven, fast-rolling Randonneur tire features new 1c compound construction. - Hard-working, hard-wearing tire built for racking up big mileage - The ideal tire for city riding and touring, even in semi-wet conditions - ECE-R75 (European Certification e-bikes)

Speed and reliability for riders pursuing a new performance level Corsa N.EXT is the exciting new addition to the Corsa family. Designed to satisfy the requirements of enthusiast cyclists who clock up the miles on long and demanding weekly rides, Corsa N.EXT combines Vittoria's peerless knowledge of racing performance with the durability of a long-lasting nylon casing that uses a unique Silica and Graphene compound for improved rolling efficiency, grip and longer wear-life. To increase puncture protection, the central section of the casing features 3 layers of nylon as well as an additional puncture protection belt. Corsa N.EXT is the first road racing tire to feature a QR Code—printed on the tire hot patch—for easy access to useful technical information about the tire. Racing inspired speed and feel, with the everyday durability of nylon construction - New combination of Silica and Graphene compound for improved rolling efficiency, grip and longer wear-life - Nylon casing provides durability, for daily racers who want to raise the bar of their performance relying on a long-lasting tyre - Proven tread design used by Vittoria teams in the World Tour

Designed for intensive training, it is equally suitable for racing events. The Rubino Pro builds on the standard Rubino platform, utilizing the same exclusive 3C Graphene compound structure, long service life, puncture protection, and sharp handling traits, but substitutes a folding bead material for reduced weight. The Rubino Pro has long been a favorite for both training and racing, and with the addition of Graphene technology compounds, is more versatile than ever! - Graphene rubber compounds

For finding your way off-road. For more comfort. For the adventure. Be it the long tour or the shortcut on your way home, the Terra gravel series by Continental gets you there over rough and smooth. Choose another road, choose Terra. - A user-optimized tubeless system is specifically designed for road cycling demands. Easy to install and reliable in use. - ProTection technology gives our tires the perfect mix of fast rolling, grip, and puncture protection. Four plies under the tread and three in the sidewalls result in greater resilience and less vulnerability to damage. - A specifically developed tubeless bead seals through its unique shape and provides a stable fit on the rim.

- 120tpi casing with Aramid TechBELT puncture protection - SmartEVO compound

- P Zero Velo TUB brings the handling and cornering behavior Pirelli is famous for to the finest handmade tubular construction. - It was developed on the fields of World Tour racing and in its debut year it already is a winner of a grand tour. Now available for your own. - Corespun 320tpi w/aramid reinforced casing. - Anti-puncture belt under the tread. - Latex inner tube for better weight, rolling and anti-puncture. - Soft yellow compund for racing usage. - Designed for modern wide tubular rims. - 48 mm RVC valve.

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

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.

The Overide is the tire for Gravel usage, whether occasional or intensive. Classic roads, degraded, paths or tracks, the Overide is the ideal mounting for versatile and improvised outings. The 700x35 version adopts an adapted semi slick profile favoring performance and comfort. The 700x38 version has had more work on its central part to bring adhesion and rideability. In construction tube-type (with inner tube), you will be convinced by its incredible versatility. In its Road Tubeless Ready version, its bead to bead reinforcement coupled to a lower pressure will blow away all the amateurs of transverse routes and long course journeys.

- Smooth-rolling tread pattern for street use - Deep grooves help sipe water away in wet weather

The Kenda Kwest Hybrid Tire is a road tire designed with a smooth rounded tread with large water dispersion grooves. - Kenda endorses the use of fluid based sealants only in specifically designated Kenda sealant compatible tire

Do endless miles of dirt road call to you? Are you looking for a boost to your speed in the next gravel grinder? Or, maybe you are planning a cross-country trek and want the quickest and most durable tire possible; look no further than the Alluvium Pro. The Kenda Alluvium Pro is an all-new gravel and adventure tire that is as capable on pavement as it is on hard-conditions singletrack. Featuring a tread design optimized for speed, with low profile knobs to aid in reducing rolling resistance combined with a new single tread rubber compound, the Alluvium offers both speed and grip. The GCT casing wraps the tire from bead to bead with a secondary casing layer acting as a shield against punctures and sidewall slashes. Seating the tubeless bead is made even easier with the GCT casing. A reflective hot patch on the tire adds visibility in low-light situations.

- Urban/recreational tire with shallow, grooved tread for multiple conditions - Size: 28 x 1 1/2 - ISO 635

Born in the hills of Kansas, the Flintridge takes its name from the local sharp jagged rocks. A smooth centerline tread pattern that is equally at home on pavement and hard pack. The Flintridge shifts from the fast rolling center to the grippy transition and shoulder knobs for control in loose rock and even mud. The KSCT casing does double duty, reinforcing the sidewalls of the tire with a woven shield to prevent slashes and abrasions while optimizing the casing for fast and easy tubeless conversion. - DTC Dual Tread Compound: Kenda's L3R PRO compound (60 shore A durometer) in the center and the cornering knobs have STICK-E compound (50 shore A durometer) - The benefits are increased center tread life plus cornering control and grip - KSCT casing for tubeless conversion and sidewall reinforcement

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.

Built for unfaltering speed through a wide range of conditions, the Riddler delivers added gusto for the rider who places equal priority on traction and efficiency. The Riddler 37 keeps your legs on their game for hours on end and provides tenacious grip in the corners. Incredibly versatile, the Riddler 45 expands the horizons of gravel riding and accommodates longer dirt tours with ease. Equally at home on your local CX course or gravel B-roads - what else do you need? SG2 PUNCTURE PROTECTION: These tires are available with our all-new SG2 Puncture Protection, which is a lightweight nylon insert that provides bead-to-bead coverage and ensures every area of the tire is defended against slashes and punctures. As events become progressively rougher and cyclists pedal farther, gravel gets tougher. It only makes sense for gravel tires to become tougher as well. - Nylon fibers have a flat profile, which reduces the amount of rubber needed to fill the gaps between fibers and minimizes weight. - Protected SG2 gravel tires feature a 120tpi casing, which improves suppleness compared to a traditional 60tpi tire. - SG2 was specifically designed to be a puncture protection layer, but it also improves air retention and eliminates seeping at the sidewall. FEATURES: - Aggressive cornering knobs meet a low-profile center tread. - Riddler 37 is an excellent choice for gravel grinding or dry cyclocross courses. - Riddler 45 is excellent for gravel exploration or drop bar bikepacking - Available with black or tan sidewalls.

Kenda Piedmont tires feature a multiple use pattern design allows riders ultimate grip in various conditions. - Durable and fast tire ideal for gravel and pavement riding - Stylish tread looks good and offers great traction

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

GravelKing SK Plus has a semi-knobby tread pattern with a super-tough puncture belt for aggressive gravel roads. GravelKing SK Plus has side reinforcement with Protite and a bead-to-bead nylon puncture belt, resulting in a 4-ply, super-tough casing.

The Urbano blends time-proven tread design concepts with modern elegance, enhancing both performance and style. The timeless v-groove shape increases grip when leaning the bike into turns, improves wet weather performance, and reduces rolling resistance. Designed for longevity, Urbano provides dependability for the long haul. Offered in a range of widths, there is sure to be an Urbano that is right for you. - Designed for long life and dependability - Interlocking groove pattern - Modern urban style

A training or racing tubular for 650c-sized wheels built on a cotton casing and featuring a traditional file and herringbone tread. - Durable cotton casing for extended training life - Rubber compound provides performance and longevity - File pattern center tread - Herringbone shoulder tread

Designed for intensive training, the Rubino Pro is equally suitable for racing events. This tire builds on the standard Rubino platform, utilizing the same exclusive 3C Graphene compound structure, long service life, puncture protection, and sharp handling traits, but substitutes a folding bead material for reduced weight. The Rubino Pro has long been a favorite for both training and racing, and with the addition of Graphene technology compounds, is more versatile than ever. - 150 TPI Nylon casing for high mileage - 3 compounds in the tread (3C) for increased wear life and better rolling - All-rounder for any condition - Functionalized GRAPHENE 2.0 compound allows for increased wet grip

The ultimate wet weather weapon Many a battle has been lost due to a lack of preparation. In Gravel and Cyclocross racing, having the right tires is often the critical difference between winning and learning the hard way. When developing the Terreno Wet tread, we worked with the top athletes to gather their wish-list of performance traits that would make the ultimate wet weather weapon. Versatility was the common thread. It had to roll like a race tire, corner on rails, and be virtually clog-proof. A tall order by any measure. The final product is a tread that performs unlike any other. With the open alternating-lugged design and full siping, the Terreno Wet delivers pro performance in a range of soft terrain. - Alternating center ridge rolls fast and provides forward traction - Full knob siping keeps the tread flexible on slick surfaces - TNT tire bead

The e-bike specific version of our popular city and touring tire maximizes range and extends battery life while delivering the dependable performance you expect. Reflective sidewall stripe increases your visibility for oncoming motorists, while the reinforced casing eliminates punctures. - Hard-working, hard-wearing tire built for racking up big mileage - The ideal tire for city riding and touring, even in semi-wet conditions - Graphene 2.0 compound reduces rolling resistance, increasing range and battery life

- The SS and SS+ feature an all-new tread pattern consisting of a smoother, diamond pattern center with more aggressive side lugs. - This tread pattern allows the rider to keep speed going into corners and maintain control throughout any transition a gravel ride could present. - The GravelKing SS incorporates a supple 126 TPI casing with a nylon puncture resistant belt and Panaracer’s proprietary ZSG (Zero Slip Grip) compound. - The SS+ uses the same build as the SS but adds a bead-to-bead layer of Panaracer’s ProTite puncture material for even more protection against tread and sidewall cuts for those extra demanding courses or rides with sharp flint rock.

- Ultimate XC Racing tire with lots of speed and grip - Well suited for a variety of riding conditions. - Fast accelerating, hard-pack cross-country tire - Numerous knobs provide multiple contact points with the ground

The industry standard in performance training tires is back with a refreshed design and increased performance! The subtle center grooves and shoulder texture retain the secure feel of the Zaffiros of the past while streamlining the look and feel for the future. The alternating slick profile and Graphene compound mimic the feel of the Zaffiro's higher-end siblings while adding durability and a more approachable price point. - Extremely durable tires for performance training - Graphene 2.0 compound and folding bead increase performance - Modern tread design for long-lasting durability

The Terreno Dry bridges the gap between file treads, and traditional all-conditions treads. The key to this is the unique angled "fish scale" design, that allows the center tread to roll extremely fast, yet offer traction when loaded in cornering and braking. Add the transitional height mid and side tread, and the Terreno Dry transitions as smoothly as it rolls. The exclusive 3C Graphene compound structure places 3 unique compounds where you need them most, adding to the performance. From gravel grinding to medium conditions cross racing, the Terreno Dry offers consistent performance. - Center scales are ramped, providing a fast rolling leading edge, yet sharp effective braking and cornering edges - Exclusive 3C compound construction featuring Graphene compound technology - File-tread Gravel and Cyclocross race tire, designed for a range of conditions

Smart Sam goes well on any terrain and even on the road it rolls effortlessly. It will roll over just about anything in the Double Defense version.

- Urban/commuter tire with thick siped tread for all-weather traction with low rolling resistance - CB - Cable Bead, type of bead found on economically friendly folding tires that provides a durable, easy-to-install tire bead - 30 TPI

- Hybrid tire for street or light trail use - Wire bead

- Street tire - Grooved tread with directional siping - Wire bead

- Slightly knobby tire for light trail use - Wire bead - 700 x 41c - ISO 622