Tires

Indoor-training has never been so technical! Featuring our special compound and tread pattern and our strongest casing, this tire is designed expressly to disperse heat and reduce noise generated by home trainers. Keep your race tires clean and safe for race day, and spend your indoor-training miles on the Zaffiro Pro Home Trainer.

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.

Kenda K50 tires are all-purpose tires with short knobbies. - Classic design for replacement and repair

The Expanse TCS folding tire is an ideal choice for fast riding on smooth gravel and mixed-surfaces. It's tubeless-ready, so you can ride lower pressure and not have to worry about pinch flats. - 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.

- 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.

- 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.

A high performance all-road tire that performs well through a wide range of inflation levels. The mix of small, closely spaced center knobs and longer, taller cornering tread blocks is appreciated in soft or loose surfaces. - ZSG (Zero Slip Grip) natural rubber compound provides consistent performance through a wide range of temperatures and wears well - Bead-to-bead puncture protection belt - 126tpi Advanced Extra Alpha casing performs well through a wide psi range, minimizes rolling resistance - Actual width of installed tire can vary by 6mm or more depending on inner rim width and inflation pressure. - Tubeless compatible Specs: - PSI: 60 - ISO Diameter: 622 / Road / 29" - Tire Intended Use: Gravel - Tire Type: Tubeless Ready Clincher - TPI: 126 - Tire Bead: Folding - Tire Diameter: 700c

More speed...thanks to a tread pattern designed for the front wheel. Its block design provides more progressivity and terrain versatility. More grip...thanks to the Magi-X rubber compound that provides maximum braking and cornering grip in all conditions (dry, wet) and temperatures (hot, cold) More strength...thanks to the strong, lightweight "Gravity Shield" 3x60 TPII casing designed for Enduro riding and its high-density reinforcement - E-Bike ready

- Fast-rolling Cross Country mountain bike tire - Designed mainly for hardpack trails - Bead: non-folding - Weight: 770 grams (29-inch)

Kenda's ultimate mountain tire with dual casing for sidewall stiffness and protection. - Tall knobs designed to penetrate and hold on loose terrain - Stick-E rubber: 50 shore A durometer rubber for maximal traction and cornering

The Jet XCR is Michelin's fastest rolling off road tire, with a tread pattern that excels in dry & hardpacked XC trail conditions. - Low profile center tread rolls fast while progressive shoulder lugs provide additional cornering traction - Gum-X2D dual compound rubber optimizes rolling efficiency and maximizes grip - Race Shield triple layer 150tpi casing is extremely lightweight and resilient against tears and cuts - Intended Use: Mountain - ISO Diameter: 584 / 650b / 27.5" - ISO Width (mm): 57 mm - Tire Bead: Folding - Tire Type: Tubeless Ready Clincher - Weight: 560 - TPI: 150

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 clincher with 120TPI nylon casing provides both performance and durability. PPS - The Puncture Protection Strip is a special fabric placed between a tire's tread and casing to increase resistance to punctures.

The CULT x Vans tire features Vans' classic waffle pattern. - Grippy in all situations - High-pressure sidewalls

The CST Decade was designed for flatland BMX riding. - Smooth tread profile with no knobs to interfere with your feet while performing tricks

The Rock Hawk is designed as an all-condition trail tire that has an aggressive tread with widely spaced lugs. - Ramped center knobs reduce rolling resistance - Durable 27 TPI casing

The SPECTR is a versatile tire that can handle street, wood, cement, or dirt. A smooth center tread keeps the tire rolling fast while the GripPods on the shoulder provide additional traction when carving. - PneuMax 100 PSI casing - UTC rubber compound - Grip-Pod system helps maintain traction when cornering

- Kenda model K831 - Alfa-Bite style ATB tire

- All purpose urban/hardpack tire with wrap-around tread for traction at hard angles - Twin rails keep tire tracking straight with minimum rolling resistance - Puncture Protection System for reduced flats - Non-folding - 545g

The CST Ciudad is an an extremely durable tire that excels at urban riding and commuting. - Grooved slick tread rolls fast while offering consistent grip - 1.5mm layer of Kevlar between tread and casing to resist cuts and tears from road debris

THE PERFECT RACER. Faced with the extreme challenges of today's XC tracks, we completely revised Racing Ralph. The result is a very fast and versatile XC profile, specially developed for the rear wheel. - Numerous grip edges in the tread center for super traction and excellent acceleration - Distinct shoulder studs for excellent lateral grip - Good rolling properties and extremely quiet

- 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

The favorite of downhill and enduro experts. The perfect choice for virtually any track. Intermediate tread: maximum braking traction and cornering grip even in extremely muddy terrain thanks to strong shoulder studs and the aggressive, open tread design. - Addix Ultra Soft Compound is the ADDIX compound for hardcore use in enduro and downhill. Sensationally good damping has been further improved over the previous VertStar compound, while at the same time ADDIX Ultrasoft is suitable for all-weather use due to significantly improved low-temperature properties when it comes to grip and damping. ADDIX Ultra Soft appears to stick to the ground, literally clawing its way into the subsoil because there’s only one goal in sight: maximum damping and maximum grip. - Downhill: Durable, double casing, snake-bite protection. SnakeSkin sidewall - Wire bead

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".

- Specifically developed for the rear wheel, but will make a good front tire too - Very fast and versatile XC tread - Great traction - Excellent acceleration - Outstanding rolling properties - Addix Speed Compound: Speed, stability, and durability

- Specifically developed for the front wheel - Extra-aggressive XC tread - Precise steering behavior - Reliable cornering when riding at the limit - Sporty handling and direct feedback - High braking performance in all conditions

At home on singletrack trails and gravel - Aggressive gravel tire - Optimal for off-road touring and adventures - Tubeless Ready (TR) The Ravager is a gravel tire for the riders out there willing to brave aggressive terrain with only their drop bars and a tiny amount of rubber beneath them. While other tires are designed to let you ride beyond the end of the road, the Ravager opens up new line choices, camping spots, and epic adventures where no road ever existed. Raised, square-edged center knobs provide climbing and braking traction on moon dust-covered trails, and oversized cornering knobs keep you and your gear out of the dirt to conquer another turn.

Kenda K1247 Amrak Tire - Clincher - Wire bead - 30tpi

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 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.

Dirt-to-pavement versatility - BMX, urban assault, or dirt jump - Inverted knob design The Holy Roller is one of those "set-it-and-forget-it" tires. Mount up a pair of Holy Rollers on your BMX or DJ bike and you'll be ready for the next session no matter where it's happening—dirt, street, or park.