Tires and Tubes

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.

Bigger feet for when the snow is deep. The small white-furred, long-bearded men with enormous feet of Swiss folklore, Barbegazi only emerge from their cave after the first snowfall. The aptly-named, ultra-fat, Tubeless Ready, Barbegazi TLR gives you the float and traction to take on any winter trail. 4.7 inches of aggressive tread floats over and bites into everything in its path. - A fat bike tire that excels in deep snow, sand, and rough terrain - Tubeless Ready (TLR) for easy tubeless setup and puncture protection - Supple and strong Inner Strength casing provides lightweight sidewall protection - Lightweight 120 TPI casing provides great ride feel and tire performance - Maximum pressure: 20psi - ETRTO: 114-584 - Weight: 1240g

Go slashing through the snow. When bite and traction are required above all else, this tire keeps you moving. Roll through the roughest terrain and deepest snow with the stud-ready, aggressively treaded Gnarwhal. Available to fit both 26 and 27.5 wheels, this versatile tire can be ridden with or without studs to add traction to even the slipperiest winter riding conditions. - A fat bike tire that excels in snow, ice, and slippery terrain - Aggressive and siped tread provides traction in even the slickest conditions - Tubeless Ready (TLR) for easy tubeless setup and puncture protection - Inner Strength casing is lightweight sidewall protection that's supple and strong - Studdable design allows for added traction in icy conditions - Easy install of available Bontrager Tire Studs with Bontrager Tire Stud Tool - 27.5" tires can accept 216 studs - 120 TPI - Maximum pressure: 20psi - ETRTO: 114-584 - Weight: 1515g

Built with Kevlar to deliver faster and stronger seals, FiberLink represents a new standard for tubeless bicycle tire sealant. Developed with Finish Line's proprietary FiberLink Technology, this groundbreaking pro latex formula seals quickly, ensures maximum seal integrity and delivers optimum longevity. - FiberLink Technology utilizes Kevlar fibers that work synergistically with fast-acting natural latex to seal punctures as they occur. Free-flowing latex cures rapidly to create an adhesive seal which is reinforced with interlinking Kevlar fibers - Low viscosity is ideal for race conditions - Fast-acting natural latex reduces air loss - Optimum longevity between refresh cycles - Low odor and easy to setup - 8oz Drip Bottle

The Minion DHF has become the benchmark for riders wanting maximum control in loose and muddy conditions. - Directional ramped center knobs provide low rolling resistance - Minion signature channel cut side knobs provide excellent cornering traction - Intended use: loose, loose over hard, medium, wet

Refined, redesigned, and ready to shred any line - Ramped and siped tread to roll fast and track straight under braking - Wide trail (WT) casing specs are optimized for 30-35mm inner width rims With side knobs borrowed from the legendary Minion DHF but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control. Pair it with a Minion DHF up front for the ultimate aggressive trail riding tire combo!

Aggressive plus tire inspired by the Ikon+ - 27.5+ tire - Designed for aggressive XC trails The Rekon+ is an aggressive trail tire inspired by the Ikon+ for intermediate and technical terrain. Wide knobs down the middle provide control under braking, and L-shaped side knobs ensure support when carving loose turns. With confidence like this you can race more and scout less with the Rekon+.

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 new incarnation of the Minion DHR. Ready to shred any line - Excellent cornering traction - Pair it with a Minion DHF up front for the ultimate aggressive trail riding tire combo! - Plus sizes available - Wide Trail casing optimized for 30—35mm rims

The new standard in enduro tires - Dual-compound - Excellent all-around performance - Tubeless Ready (TR) - Wide trail (WT) casing is optimized for 30-35mm inner width rims The Aggressor is designed for high-speed modern mountain bike trails. Advanced knob shaping creates extra gripping edges, and reinforced side knobs offer enhanced stability when cornering at speed. An all-around trail tire excelling on everything from loose cross country race courses to heavy all-mountain riding.

Troy Brosnan's go-fast signature tire. - Ideal for dry, fast trails - Tubeless compatible - Wide Trail casing optimized for 30-35mm rims Designed in conjunction with Aussie DH racer, Troy Brosnan, the Dissector seeks to minimize drag while retaining cornering control. This versatile tire can be used as a front, a pair, or as a rear, depending on trail conditions.

Refined, redesigned, and ready to shred any line - Ramped and siped tread to roll fast and track straight under braking - Wide trail (WT) casing specs are optimized for 30-35mm inner width rims With side knobs borrowed from the legendary Minion DHF but widened to provide more support, the DHR II corners like no other. The center tread features ramped leading edges to improve acceleration and sipes to create a smooth transition when leaning the bike. Paddle-like knobs on the center tread dig in under hard braking and help keep the bike under control. Pair it with a Minion DHF up front for the ultimate aggressive trail riding tire combo!

The Grand Prix 5000 S Tubeless Ready allrounder tires are lighter, faster and supported with stronger sidewalls, compared to previous GP5000 versions. Designed to be compatible with hooked and hookless rims, this new standard in road tubeless ready technology will allow you to ride faster, more comfortable and with increased puncture protection. - Hookless rim compatible up to 73 PSI / 5 bars - The tubeless ready (TR) carcass construction is robust and impervious against damage and penetration from foreign objects. The result: versatile, low weight and an attractive design. In addition, tires made using this technology can also be used as Tubeless or with an inner tube - Vectran Breaker is a synthetically manufactured high-tech fiber with an enormous tear resistance at a very low weight: Exactly the right properties to process into a premium Continental bicycle tire as a puncture protection insert - Active Comfort Technology absorbs vibrations and smoothens your ride - Lazer Grip, to make you one with the road. The lazered micro profile structure expands over the tire’s shoulder and provides outstanding cornering - BlackChili Compound provides the best balance of grip and rolling resistance for cycling

A versatile and fast race-ready tire that excels in loose-over-hard pack terrain. Join the team - ride their tire Legendary tire designer Frank Stacy provides another race-proven design with the XR2 Team Issue mountain bike tire. It's Tubeless Ready for fewer flats, and features a specifically-formulated compound for lightweight construction, improved cornering traction, and low rolling resistance. Product details - A versatile trail tire that excels in loose-over-hardpack and firm conditions - Fast rolling with consistent, predictable traction for a variety of trail conditions - Tubeless Ready (TLR) for easy tubeless setup and puncture protection - Supple and strong Inner Strength casing provides lightweight sidewall protection - Lightweight 120 TPI casing provides great ride feel and tire performance

The XR4 Team Issue TLR tire offers incredible grip and fast-rolling efficiency in a new and improved tread pattern with 120 TPI casing. Save yourself from punctures with our Inner Strength sub-tread protection while squeezing out every bit of cornering traction with the 61a/50a dual-compound rubber. This tire really is that good. - An aggressive trail tire that excels in loose and rocky conditions - Aggressive tread design provides confident cornering and braking traction in demanding terrain - Tubeless Ready (TLR) tire is engineered for easy tubeless setup and puncture protection - Supple and strong Inner Strength casing provides lightweight sidewall protection - Lightweight 120 TPI casing provides great ride feel and tire performance

The new standard in enduro tires - Dual-compound - Excellent all-around performance - Tubeless Ready (TR) - Wide trail (WT) casing is optimized for 30-35mm inner width rims The Aggressor is designed for high-speed modern mountain bike trails. Advanced knob shaping creates extra gripping edges, and reinforced side knobs offer enhanced stability when cornering at speed. An all-around trail tire excelling on everything from loose cross country race courses to heavy all-mountain riding.

The Maxxis Forekaster features a spiky, well-spaced tread pattern that is ideal for XC racing or light duty trail riding in loose or wet conditions during the spring and fall. Use as a front paired with an Aspen or Ikon rear for an “aggressive” XC setup.

The Maxxis Ardent Race shares many features with the Ikon – small, ramped center tread – but offers improved cornering performance with more substantial side knobs.

- The next generation of tubeless tires. A truly thrilling ride. It's fast. It's reliable. It's light. - The patented MicroSkin construction makes this all possible. The rolling resistance is minimal! - All around cut resistance and puncture protection are extraordinary. - This is the absolute top model from Schwalbe! - The Schwalbe One Pro can also be used with a normal tube, but its true strengths are experienced only in tubeless form.

High-volume casing, low-profile tread - Aggressive side knobs - Dual Compound - Lightweight XC race tire - Race-inspired low profile design Maxxis has done it again with its latest XC race tire. The new Maxxis Aspen pushes the limits of a lightweight XC tire designed to have minimal rolling resistance. The Aspen is designed with a high-volume casing to smooth out the roughest roots and rocks, while the dual compounds give optimal traction in the corners. So, if crossing the finish line first is your top priority, then the Aspen was designed for you.

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—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 new standard in enduro tires - Dual-compound - Excellent all-around performance - Tubeless Ready (TR) - Wide trail (WT) casing is optimized for 30-35mm inner width rims The Aggressor is designed for high-speed modern mountain bike trails. Advanced knob shaping creates extra gripping edges, and reinforced side knobs offer enhanced stability when cornering at speed. An all-around trail tire excelling on everything from loose cross country race courses to heavy all-mountain riding.

The Maxxis Ardent is a light duty trail tire that rolls fast in dry conditions. For similar rolling speed with improved braking and cornering performance, check out the Rekon.

The Maxxis Ardent is a light duty trail tire that rolls fast in dry conditions. For similar rolling speed with improved braking and cornering performance, check out the Rekon.

Bridging the gap - High-volume casing - Ideal for technical XC race courses - Medium knob height - Wide trail (WT) casing is optimized for 30-35mm inner width rims The Ardent Race tire from Maxxis is ideally suited for technical XC race courses and endurance-length events. With its medium-height tread, the Ardent Race bridges the gap between the XC-oriented Ikon and the trail-oriented Ardent. The center knobs are ramped to reduce rolling resistance, and the side knobs are angled and stepped to provide great biting traction in corners. Choose the Ardent Race for your next demanding XC race or epic trail ride.

Unleashing profile and breathtakingly fast – especially when large volume counts. As a 30mm wide road race version with V-Guard protection, G-One Speed is a tire for the really tough jobs. The new G-One Speed is an evolution of the former S-One and Big One. - Folding Bead - OneStar Compound and MicroSkin Casing

- Just like the Original version except specially designed for FatBike applications - 2-ply rubber shield fits between tire and tube to prevent flats - Fits both 26-inch and 29-inch tires

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

Our most aggressively treaded trail and enduro tire, ready to deliver confident traction in any conditions. Trail taming traction The SE6 Team Issue is an aggressively treaded, durable trail and enduro MTB tire designed for absolute traction in all terrain, no matter the conditions. The alternating 2-3 center tread pairs with a robust side tread for the ultimate in braking and cornering traction. The TM-Grip compound bites harder and the Core Strength construction offers additional tire support along with tread and sidewall protection. Product details - Our most aggressive tread for trail and enduro delivers durable traction in all conditions - Aggressive two/three center tread with biting side knobs for confident traction in all conditions - Proprietary TM-Grip compound and 120 TPI construction offers great traction and tire feel - Durable and strong Core Strength Casing adds sub-tread and sidewall protection - Tire bead chafer layer adds additional protection against abrasion and punctures - Tubeless Ready (TLR) for easy tubeless setup and puncture protection

Puncture protection and mileage are the strengths of Hardshell-ProTection. A wider PolyX Breaker, the specialist against punctures under the tread center and shoulders, provides for great reliability. The three-ply—each layer with 60 TPI—carcass covers the entire tire and makes it a real bastion against urban detritus. The outer sidewalls of the tire are reinforced with DuraSkin fabric, providing even more reliability due to the casing being so well protected. Hardshell tires are the puncture-resistant flagship amongst racing tires—produced exclusively in Germany. - Ideal when it comes to extremely long service life, for the next tour or the commute. - Made for rough surfaces and rugged tarmac.