Tires/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.

Continental tubes are made of seamless butyl rubber and are individually tested for top quality.

- Polyurethane tube - Twice as strong as a regular butyl tube - Super lightweight - Very compact

Special compound and tread pattern and our strongest casing are designed expressly to disperse heat and reduce noise generated by home trainer use. - Ideal for rollers or turbo trainer - Also available for 26 inch MTB wheel size

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.

Continental Cross Tubes are made of seamless butyl rubber and are individually tested for top quality. They're also heavier duty than standard tubes and perfect for the rough-and-tumble world that is cyclocross. - 48mm valve: 160 grams - 60mm valve: 165 grams

The Lizard Skins Tube Strap is an easy way to stow a spare tube. The minimally designed Tube Strap is a lightweight on-bike storage solution for any rider. This versatile strap is made to securely attach under seats and other locations on bike frames. - On-bike storage solution - Inner sleeve to compress a tube - Silicone strips for stability - Compact and lightweight - Attach under the seat or other locations on the bike frame - Weight 1.3oz (37g)

The Current Tire has a grippy tread pattern, good shape and tire width. It's an affordable tire designed to make it easier for beginner riders to upgrade their bike and keep existing riders on their bikes. - Grippy tread pattern - Affordable high-pressure tire

The Wild AM2 Competition tire features more grip for mixed and soft terrain. - Wild AM² tread pattern combined with Gum-X technology delivers maximum grip when cornering and excellent braking performance - Light and robust Gravity Shield casing

- Entry-level BMX-style tire with sturdy casing for longevity - Wire bead

- Valve type: Schrader - Valve core: Removable - Valve stem: Smooth - Butyl rubber - Wall thickness: 0.9mm

- Recreational tire with raised center for low rolling resistance - Fits older road bikes - Size: 27 x 1 1/4

- Shim adds support to presta stem used in a schrader rim

- ISO Diameter: 507 / 24" BMX - Tube Compound: Butyl - Wall Thickness: 0.9mm - Valve: Presta - Valve Core: Removable - Valve Shaft: Threaded Note: This product may have different packaging than pictured with a slightly different labelled size. Rest assured, the size range on the package will have the same or a broader functional range as the listed sizing of the product you ordered.

- Size: 650c x 18 – 23 - ISO Diameter: 571 / 650c - ISO Width: 18mm, 19mm, 20mm, 21mm, 22mm, 23mm - Tube Compound: Butyl - Valve: Presta - Valve Core: Removable - Valve Shaft: Threaded - Weight: 89-92g

A collaboration between Vee Tire and SE Bikes, the Cub tire features a classic BMX tread pattern blended with that bold SE styling. The square V-knobbies have been strategically placed for ultimate grip and traction. - 20 x 2.0" - Wire bead

The Chicane tire features a unique automobile-inspired smooth tread pattern. This tire is free from obtrusive knobbies which lends it ultra-low rolling resistance, high speeds, and long life. - The result of a collaboration between Vee Tire and SE Bikes' love of vintage styling - Tread features a BMX style rounded profile block tread with shallow siping for improved bite - 26 x 3.5" - Wire bead

From hardpack groomed trails to soft backcountry pursuits, Hüsker Dü’s 4.8 inch wide casing offers a huge footprint while maintaining rolling efficiency for the best balance of speed and float. Built around the perfect balance of low rolling resistance, traction and flotation, shorter center treads roll faster, and slightly taller shoulder knobs give more bite when cornering. An overall reduced lug count, combined with a tubeless-ready bead make the 4.8” Hüsker Dü a great option for any winter fat bike adventure. - 4.8” casing offers the most float of any 45NRTH tire - Ideal for loose conditions at low pressure - Reduced lug count for rolling efficiency on harder packed trails - Tall shoulder lugs increase cornering traction

Box One™ 120 TPI Folding Tires were engineered with a minimalist approach to hit lofty goals for weight, traction, rolling resistance, and rebound. At its heart is a super-supple 120TPI casing where we forced in as much rubber displacing nylon as possible. Skin walls are employed to reduce drag and further reduce weight. We flanked the high-density casing with a tightly packed hoop of aramid fibers. Finally, we draped this all with BMX race-specific tread that transitions from a center band with a large contact patch to unidirectional tactile knobbies on the sides. This aggressive combination allows for maximum traction out of the gate, immense adhesion in the corners, and low rolling resistance in the straights. A state-of-the-art mixture of compounds is used in various areas of the apex, wall, bead seat, and center – with higher silica content in the tread to again remove more weight. Note: Not a tubeless tire FEATURES: - 120 TPI High-Density Casing - Aramid Folding Bead - High-Traction Directional Grooves for Starting Gate Grip Point - Low Rolling Resistance Center Strip Chevrons - Countless Ramped Hexagonal Directional Knobbies

45NRTH utilizes a two-piece construction method to create a reliable and high-performing bicycle tire stud, featuring a concave carbide-aluminum design. The super-sized concave crown creates open space and inside edges of the bowl, resulting in twice the surface area for increased traction and grip. - Concave tip for durability and longevity - Aluminum base to save weight - Compatible with the 45NRTH stud insertion tool - Sold in a pack of 100 - XL Stud features a larger carbide tip diameter for increased traction

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.

Continental Light Tubes are made of a lightweight seamless butyl rubber and are individually tested for top quality. These tubes are nearly 30% lighter than standard tubes to make tires more supple and accelerate even faster. - 42mm valve: 65 grams - 60mm valve: 70 grams

Fast, safe and comfortable — guaranteed! The Contact is the jack-of-all-trades among city and trekking tires. Its tread design is based upon the principles of bionics. A uniform center tread/belt assembly ensures a smooth and speedy ride on the road. Flexible shoulder lugs and fine sipes guarantee grip in curves and on loose surfaces. The overall tire construction rounds off the overall high quality. The ultra fine carcass fabric reduces the rolling resistance while providing a noticeably more comfortable ride. Reflective sidewall for extra visibility. Reflective Sidewall: REFLEX is 3M reflective is commonly known to be one of the most highly reflective material options. A thin, silver light-reflecting strip on both sidewalls that adds visibility and safety to Continental's city / commuter / urban tires.

The Ride Tour is at home on any surface: a real all-rounder continuous center tread provides good rolling characteristics and ample traction when cornering. Reliable puncture protection thanks to Extra Puncture Belt Durable casing and long-lasting tread impress on all rides.

The new Vittoria Mazza combines years of athlete input with cutting-edge tread technology, raising the bar on the mixed terrain Enduro tire category. Starting with a defined center tread, the Mazza uses deep siping in the direction of rotation, allowing the tire to roll fast while still opposing drift, especially in off-camber terrain. The stepped leading edge rolls like a ramp but digs in on climbs, making Mazza a top choice for both front and rear use. Substantial spacing was designed into the center tread to provide braking traction, while also accelerating mud clearing. Cornering on the Mazza is handled by Vittoria's trademark progressive sipe width technology, which gives a gummy inside effective edge without the instability that competitors experience on the outside of the tread. Simply put, bigger sipes flex more than smaller sipes. This unique siping pattern creates asymmetrical tread flex and translates into a predictable, confident, and communicative feel at the limit of cornering. Mazza's generous tread depth claws into a range of terrain and is stabilized with Vittoria's proprietary 4C compound layering process. Four separate Graphene 2.0 compounds are layered, allowing the surface of the tread to remain tacky while the base remains planted. This ensures each effective edge is kept in place under high cornering and braking loads, leading to reduced rolling resistance and increased wear life. The bar has been raised. - Aggressive profile with ample sipe spacing for mixed terrain - Progressive sipe width for tactile grip on rocks and roots - Stepped leading-edge center-tread maintains speed and delivers climbing traction

Continental bicycle tubes are made of seamless butyl rubber and are individually tested for top quality. - 42mm valve length

The e-bike version of the new Vittoria Mazza raises the bar on e-Enduro performance for mixed terrain! Starting with a defined center tread, the e-Mazza uses deep siping in the direction of rotation, allowing the tire to roll fast while still opposing drift. The stepped leading edge rolls like a ramp but digs in on climbs, making e-Mazza a top choice for both front and rear use. Substantial spacing was designed into the center tread to provide braking traction while also accelerating mud clearing. Cornering on the e-Mazza is handled by Vittoria's trademark progressive sipe width technology, which gives a gummy inside effective edge without the instability that competitors experience on the outside of the tread. The tire's generous tread depth claws into a range of terrain and is stabilized with Vittoria's proprietary 4C compound layering process. Four separate Graphene 2.0 compounds are layered, allowing the surface of the tread to remain tacky while the base remains planted. This ensures each effective edge is kept in place under high cornering and braking loads, leading to reduced rolling resistance and increased wear life. - Aggressive profile with ample sipe spacing for mixed terrain - Progressive sipe-width pattern provides tactile grip at the knob surface without sacrificing speed or grip - Graphene 2.0 compound reduces rolling resistance, increasing range and battery life

Specifically designed for electric bikes — a reliable companion throughout the cold months - Grippy ribbed tread design based on Continental's know-how as a leading manufacturer of winter tires for cars - Excellent puncture protection thanks to Vectran puncture protection insert - Special winter tire compound for grip on snowed-covered roads and on wet and slippery surfaces

The XCO European Champion tire The Mezcal is the versatile all-rounder that gets you to the podium, time after time. Ride a combination of terrain? This is the choice of the pros. The Mezcal 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 a variety of terrain, while directional siping on each knob find traction in the roots and rocks. The best tires are built with the best casing and compound, and the Mezcal TNT is no exception. Using the proprietary Graphene enhanced 4C compound, the Mezcal attains the holy grail of XC tires; grip, durability, and low weight. - Defined center-ridge tread for low rolling resistance

Continental bicycle tubes are made of seamless butyl rubber and are individually tested for top quality.