Tires/Tubes

Many of the fastest riders in the world place their trust in these handmade German tubulars. The Competition is a world-class tire proven everywhere from the cobbles of Paris-Roubaix to your local crit series. The 180-thread-per-inch, 3-ply casing offers a velvety-smooth ride and the Vectran sub-tread provides exceptional puncture protection, reduced rolling resistance and a great road feel.

- Well-spaced and siped lugs help keep rolling resistance at a minimum even while running low air pressure - Large siping of lugs provides additional grip in sand, snow, and other unfavorable conditions - Staggered corner lugs provide a stable and predictable turning platform - Available in 120 TPI for a supple, obstacle conforming tire, or 30 TPI for a durable yet forgiving casing

- A larger variation on the original Snowshoe tire with all-weather Silica rubber blend - Weight optimized 120tpi casing, max tire pressure 20psi - Tubeless ready bead/casing

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 - Compatible with all studdable 45NRTH tires - Large stud offers more bite than regular concave stud and less rolling resistance than XL stud - We design 45NRTH tires for extreme winter cycling applications. We do not recommend this product be used with power assist bikes as the additional torque and system weight can lead to pre-mature casing wear and stud loss.

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

The Corsa has been the race-day choice of pros for years and is now better than ever. The Corsa achieves the holy grail of performance: speed, suppleness, durability, and reliability. Whether winning a Grand Tour, or a local crit, the Corsa family delivers world-class performance. - 320 TPI Kevlar reinforced Corespun-K casing for increased sidewall protection - 4 separate Graphene rubber compounds

The must-have kit for all tubeless tire users! The Tubeless Road Kit is the Vittoria all-in-one package for the best experience on your tubeless tires. The kit contains two Air-Liner Road inserts, one Universal Tubeless Tire Sealant bottle and the Road Tubeless Tool-kit - pliers and clips for easy tubeless tire removal. Contains two Air-Liner Road inserts, liquid sealant and pliers for easy tire removal. *DISPLAY BOX NOT INCLUDED THROUGH ONLINE SALE* Sizing recommendation: - Small, 700 x 23-26mm - Medium, 700 x 27-29mm - Large, 700 x 30-32mm

Lou is the 26 x 4.8" rear-specific mate to Bud. Lou’s tread is much like Bud’s with tall knobs designed to grind, crawl, and claw its way over rooty, rocky, wet, muddy, loose, or otherwise inhospitable terrain. Lou’s tread pattern is a bit different, however, made for stability while both braking and accelerating. Its casing is durable, thin-walled, 120tpi which conforms well to the ground surface shape. - Folding Kevlar bead - Tubeless Ready

Continental's Cyclo X-King Tubular rolls quickly, grips great and showcases the ride quality that you expect from a handmade German tubular tire. Short, smartly spaced center knobs speed you down the course, and taller square knobs line the shoulders for excellent cornering and control in a variety of conditions. The result is an awesome performing cyclocross tire you'll love.

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

When bite and traction are required above all else, the Gnarwhal keeps you moving. Roll through the roughest terrain and deepest snow with the stud-ready aggressively treaded Gnarwhal. Key features - Excels in snow, ice, and slippery terrain - 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

The Corsa has been the race-day choice of pros for years and is now better than ever with 4C Graphene compound technology! The latest Corsa is an evolution of the brand and brings multiple industry-first technologies to market. Starting with our supple yet durable 320 TPI Corespun-K reinforced casing and adding a proprietary mix of 4 different Graphene compounds, the new Corsa achieves the holy grail of performance: speed, suppleness, durability, and reliability. Whether winning a Grand Tour or a local crit, the Corsa family delivers world-class performance. - 4 separate Graphene compounds deliver speed, suppleness, durability, and reliability - Reinforced Corespun-K casing for increased sidewall protection - Folding bead

The ‘turbo’ of spike tires. With 361 spikes it bites firmly into icy roads. The tungsten carbide core of each spike is clad in weight-saving aluminum. The scales stop at 695 g, yet the tire remains agile and sporty. - Schwalbe's Performance line of tires offers excellent quality and the best value for an intensive-use tire.

Meet Edna: Surly's latest ultra-versatile fat bike tire. Edna was designed to perform admirably on a wide variety of terrains. Wanna go ride some super loose dirt or snow trails? Do it. Feel like riding over the pulverized bones of your enemies or, as some people call it, sand? Go for it. Hardpack? Lean back and let ‘er rip. Edna’s unique tread pattern has enough lug to provide bite on the loose stuff and a tight center tread that doesn’t drag on the hard. Add in a 4.3” footprint and you have enough traction and float to ride wherever and whenever you damn well please. - Folding bead - Casing: 60 TPI - Max pressure: 30psi - Weight: 1330g

Let Dunderbeist loose on your local groomed single track and feel the aggressive tread claw through the snow with unrivaled propulsion and braking traction. Its 4.6-inch footprint provides enhanced flotation and is compatible with a wide range of frames. Dual compound rubber rolls fast and keeps you in control while shredding the berms. Point uphill and feel the Dunderbeist dig in as you attack climbs covered in loose, unconsolidated snow. Pair Dunderbeist with its sibling front tire, Flowbeist, for the ultimate combination of traction and control. - 4.6” footprint - Designed for optimal use as a rear tire - Aggressive side lugs comprised of soft rubber compound - Ideally paired with Flowbeist front tire

Flowbeist attacks groomed single track with confidence thanks to an ultra-aggressive tread that’s ready for whatever the trail throws at it. Designed for optimal use as a front tire, its wide 4.6” footprint floats well, rolls fast and is compatible with a wide range of frames and forks. Digging into berms brings the Flowbeist alive as its tall side lugs with softer compound rubber claw the snow. Hit the brakes on tight twisty single track and the aggressive tread design digs in to keep you and your bike in control. Pair Flowbeist with its sibling rear tire, Dunderbeist, for the ultimate combination of traction and control. - 4.6” footprint - Designed for optimal use as a front tire - Aggressive side lugs comprised of soft rubber compound - Ideally paired with Dunderbeist rear tire

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.

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.

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.

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.

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 DHF incorporates ramped knobs for low rolling resistance and channel-cut knobs to increase gripping edges, giving straight-line control and precise cornering. - The reference in Downhill and Trail tires - Front specific design, but the DHF also makes an excellent option for a rear tire, with its balanced driving, braking, and cornering traction - Plus sizes available - Wide Trail casing optimized for 30—35mm rims

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!

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!

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!

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 - DH casing features 2 ply 60 TPI construction with a butyl reinforced sidewall for maximum durability 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!

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 - DH casing features 2 ply 60 TPI construction with a butyl reinforced sidewall for maximum durability 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+.

- Gen 2 Revised tread pattern - New knob layout based on feedback from World Cup DH and EWS riders - "Doublewide" knob now split into two individual knobs - More supportive cornering knobs - Additional siping to enhance braking and cornering traction - Raised ridges on casing to promote mud clearing

A mud-spike for DH racing in the worst conditions - 2-Ply DH Casings with Butyl-Protected Sidewalls - Sheds Mud Quickly - Widely Spaced, Sharp Square Design Designed for the muddiest downhill racecourse in the world: Les Gets France. Not for your local trail, the WetScream is intended for competition use only on professionally maintained courses. When the course turns ugly, trust the WetScream to carry you to victory.

The Tempo II is one of the fastest track tubulars in Continental's arsenal, gathering medals at international track events the world over. It has also found its way onto the gossamer bikes of the WorldTour's elite climbing specialists when they need to trim grams to an absolute minimum on race day. The Tempo II features a very fine 3-ply, 180 thread-per-inch casing for a high-quality ride. And, its fine cross-hatch tread pattern maximizes grip without adding rolling resistance to give you the ultimate in speed.

We named this tire for our friend Nate, who is also quite large and aggressive. This tire has a shred-your-face-off, run-over-anything, kung fu grip knobby tread pattern. The casing is round and supple. Tall, widely-spaced knobs are siped for added grip and compliance. The knobs’ wide spacing means they dig deep and still shed the crap you’re riding through. The tread wraps a little around the sides of the tire, providing good knob contour even on very wide rims, which in turn allows good off-camber traction. Similar to our beer preferences, Nate is available in black and tan. - Folding bead - Max pressure: 30psi

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 Rekon is an aggressive trail tire inspired by the Ikon - Designed for aggressive XC trails - Wide trail (WT) casing is optimized for 30-35mm inner width rims 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.

- 150th Anniversary Pzero Race Tire - Golden logo and anniversary graphic - 127tpi casing with Aramid puncture protection - TechBELT - SmartEVO compound

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 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.

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 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 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

E-Wild front tire has extra grip. Using E-GUM-X, a new rubber compromising lateral and central rubbers designed to optimize grip, with a tread pattern from the Enduro ranges for a better hold. - Gravity Shield casing - Specifically for front mounting - E-Bike ready

E-Wild rear tire with optimal grip in mind. Lateral and central rubbers transmit the bike's full power and optimize motricity even on climbs. - Pinch Protection technology, which absorbs the energy from pinch flats - Gravity Shield casing - E-Bike ready

- The favourite among downhill and enduro experts. - The perfect choice for virtually any track. - Intermediate tread: maximum brake traction and corner grip even on extremely muddy terrain thanks to strong shoulder studs and the aggressive, open tread design.

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

- Trails, corners, berms, tables, kickers and everything else that's fun to ride are where the NEW HANS DAMPF feels most at home. - Extended limits due to greater stability, durability and performance. - Semi-open block arrangement for excellent self-cleaning with low rolling resistance - Aggressive smaller shoulder blocks for grip and control on loose and loamy ground

- The favorite among downhill and enduro experts. - The perfect choice for virtually any track. - Intermediate tread: maximum brake traction and corner grip even on extremely muddy terrain thanks to strong shoulder studs and the aggressive, open tread design.

- The P ZERO Race TLR is crafted to pack all the benefits of tubeless technology into a race-ready all-rounder which outperforms all cycling clinchers that we have created before, tubulars included. - Pirelli designed this new tubeless-ready tire with the new SmartEVO compound and the TechWALL+ casing technology to provide our Professional riders, as well as all cycling enthusiasts, with a superior product! - Techwall+ Road: New TLR casing technology with multiple layers of reinforcement to provide superior puncture protection within a lightweight structure - 28c and 30c width is compatible with hookless rims according to ETRTO 5bar/73psi max pressure limitations. 24c and 26c width are NOT compatible with hookless rims.

- Maxxis' fastest and lightest road racing tire - Light and supple 170 TPI casing, K2 puncture protection, and HYPR-S combound - This new compound retains the grip found on the original High Road, but reduces rolling resistance by 12%.

The Maxxis Ikon is a versatile XC tire designed to perform in a broad range of conditions. With its predictable handling, the Ikon is also a favorite among our slopestyle athletes.

- 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

- For Downhill and Enduro - Long-supported brake edges - Extra strong shoulder knobs - Good self-cleaning properties - Available in Super Downhill, Super Gravity and BikePark construction - Available in Addix Ultra Soft, Addix Soft and Addix Performance compounds

BIG BETTY IS BACK! Equipped with everything modern tire technology has to offer. A Downhill and Enduro Allrounder for dry to damp conditions. Big Betty works perfectly on the rear wheel when combined with our much-loved Magic Mary up front. - For Downhill and Enduro - Long, supported brake edges - Extra-strong shoulder knobs - Good self-cleaning properties

- The Eddy Current's solid appearance comes from the stable blocks, more rubber and the big widths. - It allows uncompromising riding even uphill, takes fierce acceleration as well as technical riding on the trails. - Blocks up to 20% more massive than other Enduro/All Mountain profiles. - Aggressive arrangement, open design and concise V-Grooves in the center and side blocks for direct, precise steering characteristics and perfect transmission of engine power to the ground, with extreme durability. Specs: - Tire Diameter/ISO: 29''/622 - Tire Width: 2.60 - 67 TPI - PSI: 20-45 - Bead: Folding - Tire Weight: 1415g - Tire Compound: Addix Soft - Tire Technology: Super Gravity - Tire Type: Tubeless Ready - Tubeless Technology: Tubeless Easy

The Eddy Current's solid appearance comes from stable tread blocks, more rubber, and big widths. It allows uncompromising riding, even uphill, and holds up to fierce acceleration as well as technical riding on the trails. The aggressive tread arrangement, open design, and concise V-Grooves in the center and side blocks offer direct, precise steering characteristics and perfect transmission of power to the ground, all with extreme durability. - Tread blocks are up to 20% more massive than other Enduro/All Mountain profiles

- Trails, corners, berms, tables, kickers and everything else that's fun to ride are where the NEW HANS DAMPF feels most at home. - Extended limits due to greater stability, durability and performance. - Semi-open block arrangement for excellent self-cleaning with low rolling resistance - Aggressive smaller shoulder blocks for grip and control on loose and loamy ground Specs: - Tire Diameter/ISO: 29''/622 - 67 TPI - Bead: Folding - Tire Type: Tubeless Ready - Tubeless Technology: Tubeless Easy

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.

45NRTH utilizes a two-piece construction method to create a reliable and high-performing bicycle tire stud with a concave carbide-aluminum design. The open space and edges created by the large concave crown result in twice the surface area for increased traction and grip. - Concave tip for traction, durability, and longevity - Aluminum base to save weight - Compatible with 45NRTH stud insertion tool - Compatible with all studdable 45NRTH tires - We design 45NRTH tires for extreme winter cycling applications. We do not recommend this product be used with power assist bikes as the additional torque and system weight can lead to pre-mature casing wear and stud loss.