650B

Mountain bike tires, there's a new boss in town. Serfas' Sheriff tire is made from a long-wearing rubber compound and features a great small-knob tread pattern to give you traction on paths, trails, and city streets as well. • 27.5 x 2.0-inch replacement tire • 30 TPI casing • 65 PSI • All mountain tread pattern • Bead: wire • Long-wearing tire compound

The Country Grip'r is an affordable all-condition off-road tire that rolls fast and provides excellent traction in everything from hardpacked to loose terrain. - All condition tread features moderate center lugs for climbing/braking, and progressive shoulder lugs for cornering traction

Specialized's Hardrock'R is a long-lasting tire with an aggressive, yet smooth-rolling tread with multi-directional knobs that are sure to improve traction and cornering over mixed terrain. And with the added benefit of its Flak Jacket flat protection, you'll be sure to hit it all with confidence and control. - Casing: 30 TPI - Bead: Wire - Compound: 70a - Flat Protection: Flak Jacket - 26 x 2.0"; psi 35-65; approximate weight 880g - 650b x 2.0"; psi 35-65; approximate weight 960g - 29 x 2.0"; psi 35-65; approximate weight 1000g

Surly's Knard is a 27.5-inch x 41mm tire with the perfect tread for maximum traction and low rolling resistance. Designed for wherever your path leads, the Knard is the tire you want beneath you as you plot your next adventure.

We view speed and control as a right, not a privilege, which is why we took the tread design of the Fast Trak Sport tire a step further by manipulating each knob with Finite Element Analysis. Paired with extensive rider feedback and design experience, the result is an XC tire with less rolling resistance, more traction, and a rugged casing that's ready for anything. - Casing: 60 TPI - Bead: Wire - Compound: 60a - 27.5 x 2.1", psi 25-50

The Ground Control Sport is an exceptionally versatile trail tire that uses a tread optimized using Finite Element Analysis. This means that it rolls fast and provides increased grip and traction in nearly all conditions. - Casing: 60 TPI - Bead: Wire - Compound: 60a - 27.5 x 2.1", psi 25-50 - 27.5 x 2.3", psi 25-50

For all-weather trekking and commuting. Created to meet the demands of the European trekking market, the Overdrive has a grooved slick design for all-weather application, as well as K2 Kevlar Composite Puncture Protection to provide strong protection from encounters with road debris. - Grooved slick design - K2 Kevlar Composite Puncture Protection - Reflective stripe - City/touring tire

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

Serfas' Drifter is a great tire for cruising down the bike path and rolling down city streets. The tough 69 durometer rubber maximizes mileage while the inverted tread reduces rolling resistance for efficiency on the road. Plus, Serfas' Flat-Protection System lets you ride worry-free.

Tight enough tread spacing for high speed, drag-free onslaughts, yet blocky and tall enough to really dig in when it comes time to slam on the brakes. A rounded profile and staggered, supportive side knobs keep clamoring for traction even as the trail loses its camber. Most often used as a rear tire, the Trail Boss also keeps the front in check on hardpack trails. Want to go out and own it? Be the Trail Boss. Usage: XC / Trail / All Mountain Conditions: Dry to Damp / Hardpack to Loam - 27.5 x 2.25 TCS Tough/Fast Rolling: 1040g, Dual DNA compound - 27.5 x 2.25 TCS Light/Fast Rolling: 778g, Dual DNA compound - 27.5 x 2.25 Comp Tube-Type: 913g, DNA compound - 27.5 x 2.40 TCS Tough/Fast Rolling: 1050g, Dual DNA compound - 27.5 x 2.40 TCS Light/Fast Rolling: 844g, Dual DNA compound - 27.5 x 3.0 TCS Light/Fast Rolling: 1125g, Dual DNA compound

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

The Nimbus 2 Sport Reflect tire features an updated tread and compound that rolls even faster and has more grip than ever before. It comes in many widths to accommodate different bikes, riding styles, and comfort levels, so it's the perfect choice for riding on any road or bike path. And with BlackBelt flat protection and reflective accents that increase your visibility to motorists in low-light conditions, you get an added dose of that good ol' peace of mind. - Casing: 60 TPI - Bead: Wire - Compound: 60a - Flat Protection: BlackBelt - 650b x 2.3", psi 25-50

In 1984 Tom was the first to appropriate road tire technology for mountain bike tire design by introducing tread wear analysis, higher TPI and more compliant rubber compounds. Pioneering what he called Vector Force Analysis, he developed trail-specific tread patterns and technology for MTB tires. The result was the first ever rotation directional specific tire, as well as the first front and rear tire specific treads. The newest mountain bike tires to the Ritchey line are no strangers to VFA; featuring a wider, reinforced casing to handle a more aggressive terrain, the Bite and Drive are the culmination of years of analysis for all mountain riding. Bite: front or rear, rotational specific tread that bites into the terrain for excellent control in all conditions

- Perfect for urban duty mountain bikes or 650b touring bikes - Fast enough for paved roads and strong enough for gravel - Folding Aramid bead

When you’re out on a ride the last thing you want is to be limited by your tires in any way. Our ExtraTerrestrial Tires were designed to let you ride without limits by simply following the only tenets we have for tire design: they’re high volume and they kick ass. The ExtraTerrestrial tire was meant to serve as a heavy-duty off-road touring tire that shines on hardpack surfaces. It uses a nylon breaker in the sidewalls for cut protection, a molded pattern for anti-cut propagation, and a Kevlar cap under the tread to protect against flats. The ET Tire uses a distinctly directional tread pattern and its width yields more traction than you might expect from a tire with such little rolling resistance. The tread is low profile with a file tread in between tread blocks. The ExtraTerrestrial tire has enough width and traction for the soft stuff and won’t bog you down on smooth or hard surfaces. - Folding bead - Casing: 60 TPI - Recommended rim width: 23 – 30mm

The Knard is a tire that just makes sense. With its tightly-spaced, low-block tread pattern, it provides the perfect ratio of traction and low rolling resistance. It grips well on all sorts of different surfaces and will haul some sausage on hardpack terrain or groomed trails. If you want a tire that has a little less bite and a bit more speed but don’t want to sacrifice traction, look no further. With sizes ranging from a svelte 41mm all the way up to a hefty 4.8”, there’s a Knard to solve all your fast-rolling needs. - Folding bead - Casing: 60 TPI - Max pressure: 75psi - Weight: 510g

Ritchey's signature mountain bike tread pattern for well over a decade, the Z-Max Evolution is the culmination of years of development and VFA design. Tread lugs are spaced wider and shortened for faster handling, reduced rolling resistance and lighter weight.

Gravel road riding is all the rage at the moment. It's great for cyclists who want to leave sealed roads behind and enjoy the freedom of cycling on unpaved roads. Designed to suit diverse touring styles, the GravelKing uses a mixture of properties that also accommodate on-road cycling. Featuring ZSG Natural compound, anti-flat Casing, and Advanced Extra Alpha Cord. - Black multi-use gravel tread - Aramid (Kevlar) folding bead

The most versatile tire in the Donnelly line-up, MXP is at home on a wide range of courses and conditions. Some call it a traditional chevron-style tread pattern but most call it the go-to when you are not sure what the cyclocross course has in store for you. - Traditional arrow/chevron center tread with progressive shoulder lugs for secure cornering in loose conditions - Tire Intended Use: Cyclocross - Labeled Size: 650B x 33 - Tire Bead: Folding - Tire Diameter: 650B - Tire Type: Clincher - Weight (oz): 15.1 - TPI: 120

Born in the American Midwest, gravel riding is one of the fastest–growing styles of cycling. The sense of adventure, conquering new challenges, and simply experiencing a new style of riding are some of its big selling points, but doing so without the proper tires makes the difference between having fun and cursing and hollering on the side of the road. The Pathfinder delivers the versatility that these adventure-laden rides deserve—fast rolling, lots of grip, and a whole lot of fun. - Casing: 120 TPI - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON - Flat Protection: Endurant Casing and BlackBelt - 650b x 47mm [1.75"], psi 35-65

Schwalbe One Tires. Schwalbe's fastest and most reliable competition tire. Featuring a the new OneStar Triple Compound.

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 - 126 TPI 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.

High-volume Tubeless Ready adventure tire. Maxxis' took their most popular training tire, the Re-Fuse, and modernized it with tubeless technology and higher volumes for even more reliability and comfort. The familiar diamond tread pattern keeps things rolling smoothly even as the pavement crumbles into gravel and hardpack dirt. - Folding bead - Diamond-knurled slick design - Tubeless Ready - MaxxShield bead-to-bead protection - Dual-compound rubber

A great all around multi-sport tire complete with Serfas' Flat Protection System. - MULTI-SPORT FPS - Low Profile Tread Pattern - 68a Durometer Center Ridge For Long Life & 58a Durometer Sides For Enhanced Cornering Capability - Great Cross Country Tire For All Conditions - TSR (Tubeless Ready) - Pressure: 65 PSI

The big news from Donnelly is the upcoming EMP gravel tire, which pulls its name from the airport code for Emporia, Kansas, home of a kinda popular gravel race that crushes souls every year. The tire is a departure from their usual tread design, getting a tighter tread block pattern without a well-defined center strip like most all of their other tires. It’s still designed to roll fast, which is key if you’re racing any long distance gravel bike event, but with bigger side knobs to handle more aggressive cornering. - Smooth-rolling center knobs and aggressive shoulder lugs - Soft rubber compound for extra grip and shock absorption - Integrated puncture protection belt under the tread - Tire Intended Use: Gravel - Labeled Size: 650B x 47 - Tire Bead: Folding - Tire Diameter: 650B - Tire Type: Tubeless Ready Clincher - Weight (oz): 19.6

The Ground Control 2Bliss Ready is an exceptionally versatile trail tire. CAD engineered knob shapes strengthen knob structure for optimum braking and traction, but keep knob surfaces adaptable for best ground control. GRIPTON compound helps make this the perfect choice for epic trail rides in any condition. - Casing: 60 TPI - Bead: Foldable - Butyl wrapped bead, 2Bliss Ready - Compound: GRIPTON - 650b x 2.1" psi 25-50; approximate weight 610g - 650b x 2.3" psi 25-50; approximate weight 670g

It's back! This early 90's stalwart has been updated with new materials, a new tread pattern, and new technology. Specialized's Ground Control 2Bliss Tire is a confident-cornering tread that excels in a variety of conditions. Specialized used finite element analysis to optimize the side knobs for grip, create a fast-rolling center section, and provide great braking control.

There are routes covered with jagged flint rock, where the wind is unforgiving, and the destination is far beyond the horizon. For the toughest days of gravel, when winning looks like finishing, we created the Cannonball. We designed the Cannonball to accommodate modern gravel rigs whether you’re racing Dirty Kanza, Trans Iowa, or Mid-South… it’s conquered them all. The directional, tight-knit center tread efficiently decreases rolling resistance while the side knobs increase cornering traction. The center tread’s diamond pattern is optimized specifically for gravel riding and sheds dirt and gravel debris. - Light and Supple—When extra puncture protection isn’t necessary, our light and supple casing offers decreased weight and a comfortable, ultra-supple ride quality at lower pressures when set up tubeless. - Durable Sidewall—This construction consists of a robust woven nylon composite reinforcement between the outer rubber and the inner casing within the tire’s sidewalls to prevent tearing and abrasions.

Teravail's 47mm Rampart offers increased traction and an ultra-smooth ride quality on rough pavement (and well beyond). The smaller 650b diameter means it fits into many existing 700c frames to give your current bike an entirely different feel and increased versatility.

Whether your route covers rough roads or fast gravel, or even both in the same day, Washburn is built for the job. Its center slick provides awesome rolling efficiency on pavement and packed dirt, while the shoulder lugs take over in the turns, digging in for confidence in loose corners. - Centerslick tread pattern minimizes rolling resistance - Tall shoulder lugs add traction through corners and over soft surfaces - Tubeless ready for flat prevention, lower-pressure traction and comfort - Light and supple casing provides a plush ride and decreases rotational weight - Ideal internal rim width is 23 mm