Tires

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.

Volume, speed, and consistency. The Cross Boss’ even center tread shelf provides smooth and fast acceleration while more open side knobs help clear muck. A rounded, high-volume profile designed ground-up for tubeless usage provides plenty of room to modulate tire pressure while dual compound, Dual DNA rubber and defined cornering channels keep riders grinning for more turns. From singletrack to the circuit, the Cross Boss is here to bring it. Usage: Cyclocross Conditions: Dry to Damp / Hardpack to Loam - Weight: 400g - Compound: Dual DNA

FAAAASSSTT! The Nano 40c is built for speed, and let’s just politely say it delivers. A 40mm, rounded profile and an elevated centerline provide enough volume for lower tire pressures and a smoother ride while still reducing drag and rolling resistance. This makes for an all out gravel destroyer that can still appease those clamoring for a truly big cyclocross tire. Winner? We think so. So does everybody else. Don't believe us? Just ask. Everybody's irrefutable favorite, 'nough said. Usage: Gravel / Cyclocross Conditions: Dry to Damp / Hardpack to Sand - TCS Light/Fast Rolling: 530g, Dual DNA compound - Race Tube-Type: 470g, DNA compound - Comp Tube-Type: 550g, DNA compound

Nano 40 is built for speed. A nearly uninterrupted centerline provides swift efficiency on hardpack terrain while staggered outer knobs allow you to stay on the gas while hammering up chunky climbs or hanging on through loose gravel corners. The high-volume 40mm casing allows for lower tire pressures and a smoother ride while still reducing drag and rolling resistance. This makes for an all-out gravel destroyer that still appeases those clamoring for a truly big cyclocross tire. Everybody's irrefutable favorite, 'nough said. SG2 PUNCTURE PROTECTION: This tire is 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: - Minimal rolling resistance due to raised, consistent centerline tread. - Long, staggered knobs provide steadfast traction without cutting down on speed. - TCS Light/Fast Rolling versions of the Nano 40 tire provide ultimate tubeless reliability for gravel or cyclocross racing. - Race and Comp level tires are designed to provide optimal performance at a competitive weight but must be used with inner tubes. Race and Comp level tires are not tubeless compatible.

Speaking for itself, Raddler is the radder version of our famed Riddler tread pattern. It combines the expeditious efficiency of a short-knob centerline with get-rad traction of chunky outer knobs. Let's call it a semi-slick, but one designed to increase confidence while you're pushing the limits of gravel. Raddler is an excellent choice for loose terrain where traction takes priority, but efficiency is never far behind. Lean it over, take the inside line, brake late, and stay pinned with the Raddler. 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: - Short-knob center tread cuts down on rolling resistance while still providing enough bite for out-of-the-saddle traction. - Center and intermediate knobs on the Raddler are slightly taller than those of the original Riddler, thereby increasing tire lifespan without negatively affecting rolling efficiency. - Tall, toothy outer lugs ensure your favorite gravel descent doesn't unravel in the final corner. - Single-ply 60tpi casing provides dependable protection at a minimal weight. - Available with black or tan sidewalls in 40mm and 44mm widths. - All Raddler tires are TCS tubeless compatible.

The second generation of the legendary High Roller - Easily clears debris - Open tread design - Wide trail (WT) casing specs are optimized for 30-35mm inner width rims An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability. A square profile provides a solid, consistent feel across the knobs. Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces. An excellent choice for technical, loose terrain.

Before the Pika, gaining traction on gravel roads was a true feat. Now, it’s child’s play. Ramped center knobs roll fast on loose gravel, and U-shaped shoulder knobs dig in on the turns. The Pika is equipped with dual compound tread, EPS protection, and wire bead.

The Maxxis Rekon Race is a semi-slick XC race tire that features the lowest profile tread in our XC line. It is a great choice for dry XC trails and short track racing.

The all new Hillbilly GRID 2Bliss Ready tire is a perfect option for front tire use when the course features intermediate to soft terrain. When the terrain is changing from hard to soft, the small blocks penetrate the ground surface and better connect you to the trail. Small surface center knobs also increase the load on the ground and help surface penetration, while the shoulder knob row provides support in fast turns on all surfaces. Our GRIPTON compound, meanwhile, improves high frequency damping, better attaching the tire to the ground over small bumps and rough sections alike. This also means that the low frequencies of the rolling tire deflections pass through unfiltered, leaving no energy to be absorbed and keeping your speed high. Please note that we recommend GRID tires for anyone seeking the utmost in flat and sidewall protection or additional stability. - Casing: Additional cap ply for exceptional durability, plus added sidewall stiffness for enhanced stability. - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON - 29 x 2.3" PSI 35-65; approximate weight 960g - 29 x 2.6" PSI 20-40; approximate weight 1010g

The new Slaughter Grid 2Bliss Ready tire has been designed for heavy-pedal, hard-pack riding—receiving vertically stepped knob shapes for more knob core stability and additional biting edges. Fast courses on hard-packed ground require a light, fast tire center to keep speeds high, but must also keep the speed through loose sandy corners and track well under hard braking. For these reasons, we've kept the high shoulder knobs. Our GRIPTON compound, meanwhile, improves high frequency damping, better attaching the tire to the ground over small bumps and rough sections alike. This also means that the low frequencies of the rolling tire deflections pass through unfiltered, leaving no energy to be absorbed and keeping your speed high. Please note that we recommend GRID tires for anyone seeking the utmost in flat and sidewall protection or additional stability. - Casing: 60 TPI - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON - 650b x 2.3", PSI 25-50, approximate weight 825g - 650b x 2.6", PSI 20-40, approximate weight 950g - 650b x 2.8", PSI 15-30, approximate weight 1040g

Elite-level road meets renowned tubeless simplicity in sizes that accommodate exploration while digging deep on lonesome roads. Exposure TCS tires mean big days and few boundaries. - Supple tubeless casing allows for lower pressure and improved traction - High volume road casing enables comfortable ride - Dual Compound Rubber means a fast-rolling tire with great corning traction - Smooth centerline with a diamond file outside edge for increased off-road performance - Designed to meet ETRTO standards, TCS (Tubeless Compatible System) tires feature the best of both worlds: they boast the ride benefits & reliability of a tubeless tire with the minimal weight of a tube-type tire.

Our new Terra Pro 2Bliss Ready tire is the tire of choice for cyclocross purists, as it's designed for grip and speed in the muddiest of conditions. Along with the new tread pattern, the Terra Pro 2Bliss Ready also features our Gripton compound that stays soft and supple when Mother Nature turns on the A/C. And finally, this 2Bliss Ready iteration allows you to drop tire pressure for additional grip, without worrying about pinch flats. - Usage: Cyclocross mud tire - Audience: Purists - What's Special: GRIPTON compound stays soft and supple when temperatures drop low. - Butyl wrapped bead = 2Bliss Ready - 700 x 33mm; PSI 35-65; Approximate weight: 380 grams - 700 x 38mm; BlackBelt; PSI 50-80; Approximate weight: 490 grams

BSD Donnasqueak Tires - Smooth center for low rolling resistance - Tear-resistant silkworm casing

The second generation of the legendary High Roller - Easily clears debris - Open tread design - Wide trail (WT) casing specs are optimized for 30-35mm inner width rims An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability. A square profile provides a solid, consistent feel across the knobs. Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces. An excellent choice for technical, loose terrain.

The Kross Plus Wire in K847 Tread is a great tire for any hybrid or mountain bike. - K847 Tread Pattern with SRC compound - Wire bead - Made from quality Kenda rubber

- The DH22 tire is the more versatile in the range allowing it to perform best on soft and mixed terrain, but it will still ride well on harder trails - It is built with the Magi-X compound and the Down Hill Shield to ensure good stud penetration on soft terrain while combining stability on hard terrain

- Kenda model K40 - Intended for street use

- 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.

This versatile competition and trail tire is comfortable and sure-footed in the turns. It has good grip and is available with various technologies. - Smoothly rolling tire that adapts to any terrain with its special tread - Suitable for E-Bikes

Satisfy the need for speed The G4 Team Issue downhill tire is tailor made for aggressive riding in difficult rocky conditions. The tread features ramped edges with an open tread design and aggressive shoulders to keep the G4 gripping while it quickly clears debris for confident cornering. Dual-ply casing and gravity-specific compounds maximize traction and durability on even the harshest trails. A fast rolling DH tire that hooks up in loose, rocky conditions on the biggest, roughest tracks. - A downhill mountain bike tire that excels in rocky and loose conditions - Ramped edges for fast rolling with terraced shoulder knobs for consistent traction - Large center knobs improve handling and braking traction - Sipes for increased traction on slippery roots and rocks - Dual-Ply multi-layer casing adds stability for heavy-duty DH tires with added butyl layer to prevent flats

The world’s fastest riders are always hungry for more traction. So when Loïc Bruni, Finn Iles, and Chris Grice from the Gravity team reached out to us to develop a mountain bike tire to tame World Cup Downhill tracks, we cooked up something that will satisfy even the most aggressive appetites. We completely redesigned the Cannibal tread pattern, integrating our super-sticky GRIPTON T9 compound with a high-volume casing that brings superior control to any terrain. Staggered shoulder blocks maximize cornering stability, and large center braking blocks bite aggressively into the ground. Engineered to the design specifications of our riders, the Cannibal balances weight and durability with GRID Gravity casing for Enduro, Downhill, and Park riding. The Cannibal delivers the unbeatable combination of grip, confidence, and control to devour any track. - High-volume casing and staggered shoulder blocks for predictable high-speed cornering. - Re-designed center knobs and siping form strong surface connections. - Wide braking edges and massive center blocks cut in for maximum deceleration. - GRIPTON T9 compound reduces terrain-induced chatter, enhancing confidence at warp speeds. - Compliant and adaptable GRID GRAVITY 2-ply casing construction is ideal for Enduro, Park, and Downhill riding. - 2Bliss Ready technology protects against pinch flats, cuts, and punctures.

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 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 combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo, and a high mileage, grippy, natural SMARTplus compound. And puncture protection is enhanced when combined with the appropriate tubeless sealant. 260TPI SuperPoly casing.

The Verdict family presents our most aggressive front-focused tires for days where relentless traction takes priority over rolling efficiency. Tall, chunky knobs dig deep into soft terrain regardless of how loose or sloppy it may be. Abundant open space between all knobs gives them room to dig through the driest days of summer and fling mud in the wettest months. The Verdict family is guilty of holding it down through off-camber corners and chundery descents. Verdict is the do-it-all spike designed to handle loose, technical trails. Its toothy knobs dig into soft terrain and grapple through rocks and roots. Pair It With A Judge The Judge 2.40 rear tire complements their usage with equally robust knobs that emphasis claw-like braking traction while also keeping rolling efficiency in mind. Looking to keep the front upright while you steer with the rear? That's what you get with the Verdict/Judge combo. TriTec And Slash Guard: Verdict features TriTec Compound, which utilizes three rubber compounds to provide different levels of traction, support and durability based on their placement within the tread. The entire tread pattern is supported by a base of supportive rubber, which transitions halfway into the height of the knobs and allows for the use of softer knob compounds without folding under cornering forces. The tops of the center knobs consist of an intermediate compound to provide traction and durability without sacrificing rolling efficiency. Outer knobs feature a soft compound that delivers maximum grip and slow rebound. All TCS Light versions of the new Verdict tires feature Slash Guard technology, which incorporates a protective nylon insert spanning the entire sidewall to provide extra protection without the weight of the dual-ply casing found on TCS Tough versions. - The Verdict tread pattern excels in loosest, rowdiest conditions where relentless traction takes priority over rolling efficiency. - Abundant open space between all knobs allows the tread pattern to dig through the driest days of summer and fling mud in the wettest months. - Pair it with the Judge 2.40 as a rear tire for claw-like braking traction that matches the tenacious grip of the Verdict tread. - Optimized for use with i29 rims.

Vittoria Randonneur Tech tires feature classic city tread with subtle siping for wet weather use. - Functionalized Graphene 2.0 compound minimizes battery usage on e-bikes - Additional puncture-protection layer and reflective sidewall stripe for safety

Corsa inspired tread design, for paved surfaces and hard-packed gravel. The smooth Corsa inspired center rolls fast, while the side tread "scales" provide durable bite when cornering and braking. - Three compounds in the tread (3C) for increased wear life and grip - Functionalized GRAPHENE 2.0 compound delivers ultimate performance - Corsa-inspired smooth center tread minimizes rolling resistance - Gravel tire designed for paved surfaces and hard-pack terrains - Side tread “scales” provide dependable bite through corners, and when braking

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 second generation of the legendary High Roller - Easily clears debris - Open tread design - Wide trail (WT) casing specs are optimized for 30-35mm inner width rims An open and aggressive tread design gives the High Roller II excellent soil penetration and mud-clearing ability. A square profile provides a solid, consistent feel across the knobs. Modified knobs on the shoulder and center improve braking performance and traction on hard surfaces. An excellent choice for technical, loose terrain.

The XCO World Champion tire Riding technical XC? The Barzo is the choice of the 2015 World Champion, as well as the winner of the BC Bike Race. How can such an aggressive XC tire roll so fast? The magic starts in the center tread, where we place an alternating ridge design, and progressive sipe angles. Cornering duties are handled by the moto-style block knobs, laid out in a proven V-formation. The result is a tire that corners as fast as it rolls, while still offering the protection of a full depth tread. Rocks and roots? Check. World Championship? Check.

Martello hammers home the performance you expect, on the most demanding Enduro and DH courses. Looking for the one tire to tackle a wide range of courses? The Martello features a World Championship proven TNT bead, add the proprietary 4C Graphene compound, topped off with a moto-inspired tread design and progressive width siping. This last part is key, and provides for a progressive feel on the effective edge, allowing for that fine-touch tactile feel that top racers expect. This design provides for a progressive feel on the effective edge, allowing for that fine-touch tactile feel that riders expect. Whether shredding rocks, roots, or mixed terrain, Martello delivers.

A versatile all-round tire for a combination of terrain that features a unique low-profile tread that is tightly spaced in the center, for low rolling resistance and durability. Countless effective edges work together to grip on a variety of terrain, while directional siping on each knob make traction in the roots and rocks. Using the proprietary Graphene enhanced 4-compound rubber, the Mezcal balances; grip, durability, and low weight. - Defined center-ridge tread for low rolling resistance - A multitude of effective braking and climbing edges - Low-profile, densely spaced knob configuration - Designed for all terrain types, from hard pack to mud to wet