700c, 27-Inch & 650c

A super supple, hand-built, 320TPI tubular tire that excels in road and crit racing. The pavement is calling The R4 tubular's race performance gives unparalleled road feel yet is extremely durable for a racing tubular, thanks to Hard-Case Lite protection. The Hard-Case Lite sub tread material protects against punctures in the peloton and up the hardest and sketchiest road climbs. Product details - Excellent for road and criterium racing - Supple polyamide synthetic fiber reinforcement for added casing strength - Hard-Case Lite protects against punctures with superior, lightweight, sub-tread material - 38mm valve length with valve extenders available separately Specifications - TPI: 320 TPI - Durometer: 60a - Type: Tubular - Max pressure: 190psi - ETRTO: 23-622 - Puncture protection: Hard-Case Lite - Studdable: No - Weight: 280g (23) / 290g (25)

The Caldera is designed as a durable tire that can handle the rigors of high-mileage training or commuting. - Thick crown tread provides longer-lasting wear - Durable 27 TPI casing

- Ideal road bike commuting tire - With a thicker layer of tread rubber, the Caldera provides longer-lasting tread wear than a normal road tire - Bead: non-folding - Weight: 330 grams

- Hardpack mountain bike tire designed to run in specific directions for the front and rear - In front, the Camber rolls fast, confidently grabbing corners even in the loose stuff - Reversed on the rear, the Camber gives you the same confidence in the corners, plus additional acceleration and climbing traction - Folding bead option also provides lightweight EPS puncture protection layer for outstanding performance and durability

The Sensamo Control provides all-season grip for urban riding and commuting. - Deep tread sipes and all-season rubber provide excellent grip - Reflective sidewall for increased low-light visibility - APL 0.7mm puncture protection layer under tread

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.

- Excellent commuting tire - Ciudad offers a grooved-slick tread for low rolling resistance - Kevlar Inside puncture protection will keep you commuting even on the roughest roads, while the reflective sidewall provides increased night visibility - Bead: non-folding - Weight: 500 grams

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.

Race it hard or just head off the beaten path. The Strada Bianca takes the proven construction of the Paris-Roubaix and adds volume to take you comfortably over less-than-perfect surfaces. Challenge introduces STRADA BIANCA H-TLR 45. The staple herringbone-design tire proves its handmade performances on rougher terrain with a new gravel-specific construction and an added beefier new 45mm size. The STRADA BIANCA 45 is the tire designed to take you comfortably rolling over rough pavement, cobbles, sandy or hardpack fields, to literally floating over the more enduring dry, rocky terrains. It is the first 45mm tire in the Challenge range.

Completely renewed, sporting a dynamic tread pattern design. Matches with a race bike, as well as a classic city road bike. Available in a wide range of dimensions and colors. PureGrip Compound Based on activated silica compounds, this technology was originally intended as an performance level compound, but after intensive development at our Korbach Research and Development Department Facility, an advanced new compound with outstanding grip and cross-country properties was developed. This new rubber mix, given the self explanatory name "PureGrip", is ranked just behind our BlackChili Compound and is being used in our performance products both in the road and mountain bike sectors. Whilst providing great grip, it is also long lasting and highly durable – both characteristics of Continental tires, which are exclusively manufactured in the factory in Hefei (Asia). Suitable for E-Bikes For our E-Bike tyre we fall back on over 100 years' experience with moped and motorcycle tires. All of our city/trekking tires are rated to a standard speed of at least 25 km/h. Those tires marked e50 are also certified for S-Pedelecs. With their high quality structure, puncture protection is high and the rolling resistance is low offering protection from premature wear brought about by the additional driving force.

Continental's Gatorskin Folding combines 3 flat-protection technologies into one fast-riding, high-mileage racing and training tire. It features a super-fine 180 thread-per-inch casing, a bead-to-bead layer of DuraSkin, and is finished with a Kevlar-reinforced top layer. The result is a tire with a lightweight folding bead that rolls and corners with the best of them while providing flat protection second to none. - DuraSkin sidewall protection - PolyX puncture protection - Weight: 220/240/320/325 grams (23c/25c/28c/32c)

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

Continental's Grand Prix 4000 S II boasts Conti's Black Chili rubber compound for low rolling resistance, impressive traction and long wear, making for one of the fastest tires in the peloton. The GP 4000 S II also uses a tough Vectran sub-tread for exceptional puncture protection, while the 330-tpi casing delivers a velvety-smooth ride. If you're looking for the ultimate road tire, you've found it.

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 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

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 in your quiver. This tire is even more aggressive than the 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: - 456 grams Type: - Tubeless Ready 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-ready design mounts easily to most tubeless ready rims. - Tubeless casing is reinforced for wear, features an Aramid bead. - Precision design creates a straight tire with no variances in size or alignment. - Can be used tubeless or with a tube.

Where the rubber meets the road...literally. Genuine Electra tires The same great tires that your Electra originally came with. Propelling you along the pavement. Boardwalk. Whatever. Product details - Semi-smooth tread Amsterdam tire - Tube not included

- Unsurpassed all-weather traction. - Modeled after our Assurance All-Season automobile tire, the Transit Tour combines a durable, utilitarian construction with directional siped tread that offers unsurpassed all-weather traction. - Constructed to eBike approved standards and with reflective side strips enhancing twilight and night visibility, the Transit Tour provides robust flat protection along with a comfortable ride for your next journey.

- Flow through urban centers and bike paths. - At home flowing through urban centers and along bike paths, the Transit Speed is a fast-rolling urban tire combining confidence-inspiring handling with great durability. - The Transit Speed range comes equipped with 5mm reflective sidewall stripes to enhance visibility. - Meeting the ECE-R75 requirements for use with modern eBikes, the Transit Speed delivers both performance and durability.

- From gravel adventuring to drop-bar dirt mashing, the Connector is capable of tackling any terrain. - A versatile tread pattern featuring tightly-spaced center knobs combined with aggressive side knobs is mated to our Tubeless Complete construction. - The result is a fast rolling, highly tractable, all-terrain tire ready for everything from backroads to singletrack.

Mating an efficient tread pattern with a high-volume and robust construction, the County is a versatile companion at home on any surface. Widely-spaced side knobs offer confidence on loose terrain while a smooth center tread minimizes rolling resistance. Goodyear's R:Wall sidewalls and Tubeless Complete construction ensure enhanced durability and fewer flats when the going gets rough. - Tubeless Complete: Tubeless bead combined with a multi-compound air-tight material layer - 120 TPI Casing: Supple casing for improved ride quality - Dynamic:Silica4 compund: Formulated for the best in grip and longevity - Secure Sidewall: Anti-cut layer for added sidewall protection

IRC’s lightest and fastest road tubeless tires. A wider tread and cross-sectional shape provide improved rolling resistance. This tire is designed for high speed in dry weather conditions. - The Formula Pro Tubeless Light is IRC’s fastest road tubeless tire - A wider cross-sectional shape provides improved rolling resistance - This tire is designed for high-speed riding

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

- Deep grooves evacuate water and dirt efficiently

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

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

- Continuous center ridge for added speed - Iron cap construction for puncture protection - Reflective sidewall stripes for safety - Water dispersal sipes for better wet grip

- 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

Kenda Karvs Tire - Clincher Folding Black 60tpi

The Kwick Drumlin is hard to beat: K-Shield protection and a long lasting compound make it a reliable companion. Burly side knobs give confidence and grip on wet or loose conditions. Feels at home on concrete as well as gravel paths and forest roads.