Tires/Tubes

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 - 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

Conquer ice, conquer snow, conquer winter riding! Commuting to work or school on ice just got faster and easier with 45NRTH's Xerxes. 140 steel-carbide studs provide unrivaled control and durability, while the ultra-narrow profile easily slices through snow to provide extreme traction in every winter condition.

Welcome to the world of high-performance commuter tires. 216 studs are carefully positioned across the casing profile to yield a level of confidence and safety never before seen in a commuter tire. Siped tread lugs and oval-shaped stud groupings provide exceptional cornering, braking, and acceleration traction. Run the Gravdal at minimum pressure for unmatched traction performance, and maximum pressure for a quieter and faster ride on clean roads. Works great with linear-pull and canti-lever brakes. - Siping creates a more conforming lug for added traction - Steel carbide studs provide traction in the iciest conditions

Welcome to the world of high-performance commuter tires. 216 studs are carefully positioned across the casing profile to yield a level of confidence and safety never before seen in a commuter tire. Siped tread lugs and oval-shaped stud groupings provide exceptional cornering, braking and acceleration traction. Run the Gravdal at minimum pressure for unmatched traction performance, and maximum pressure for a quieter and faster ride on clean roads. Works great with linear-pull and canti-lever brakes.

45NRTH's Gravdal welcomes you to the world of high-performance commuter tires. 252 Studs are carefully positioned across the 700c x 38mm casing profile to yield a high level of confidence and safety. Siped tread lugs and oval-shaped stud groupings provide exceptional cornering, braking and acceleration traction. Run the Gravdal at minimum pressure for unmatched traction performance, and maximum pressure for a quieter and faster ride on clean roads.

From light winter trail riding to commuting, the Kahva allows you to carve your way through winter with steel carbide studs as well as single, double, and triple-siped lugs.  - Siping on center and side lugs allows them to conform to terrain better for increased grip in any riding conditions - Steel carbide studs provide traction in the iciest conditions - Directional lugs provide low rolling resistance while offering excellent braking traction

Versatile and confidence inspiring, the Gravdal securely navigates through harsh winter conditions with concave carbide studs far added traction in icy conditions. - Siping creates a more conforming lug for added traction - Concave carbide studs provide traction in the iciest conditions - Reflective strip on sidewall makes you more visible when riding in low-light conditions - Fits most bikes with cantilever or disc brakes - Tubeless ready - 240 concave carbide studs

Versatile and confidence inspiring, the Gravdal securely navigates through harsh winter conditions with concave carbide studs far added traction in icy conditions. - Siping creates a more conforming lug for added traction - Concave carbide studs provide traction in the iciest conditions - Reflective strip on sidewall makes you more visible when riding in low-light conditions - Fits most bikes with cantilever or disc brakes - Tubeless ready - 252 concave carbide studs - 60 TPI

From light winter trail riding to commuting, the Kahva allows you to carve your way through winter with concave carbide studs as well as single, double and triple siped lugs. - Siping on center and side lugs lets the Kahva conform to terrain for increased grip in any riding conditions - Concave carbide studs provide traction in the iciest conditions - Directional lugs provide low rolling resistance while offering excellent braking traction - 240 carbide aluminum studs - 60 TPI

From light winter trail riding to commuting, the Kahva allows you to carve your way through winter with concave carbide studs as well as single, double and triple siped lugs. - Siping on center and side lugs lets the Kahva conform to terrain for increased grip in any riding conditions - Concave carbide studs provide traction in the iciest conditions - Directional lugs provide low rolling resistance while offering excellent braking traction - 252 carbide aluminum studs - 60 TPI

From loose snow to icy freeze-thaw and everything in between, Wrathchild craves the best and worst winter conditions. Deep center lugs aggressively claw into unconsolidated snow for extreme acceleration and braking traction. Super-tall side lugs dig into loose snow to provide predictable and confident cornering. It doesn't matter whether there's ice on the road ahead, the Wrathchild is available in both studded and non-studded models. Let Wrathchild bring out your inner-child and go carve up some local trails.

From loose snow to icy freeze-thaw and everything in between, Wrathchild craves the best and worst winter conditions. Deep center lugs aggressively claw into unconsolidated snow for extreme acceleration and braking traction. Super tall side lugs dig into loose snow to provide predictable and confident cornering. Encounter sheer ice on your ride, and Wrathchild’s XL concave studs tear into the surface. Let Wrathchild bring out your inner child, and go carve up some local trails. - Deep, aggressive lugs and XL Studs dig into snow and ice - Tall side lugs provide cornering confidence - XL Concave studs tear into slick surfaces - Tubeless-ready

Grenade style Schrader Valve caps

- RR-S AR Compound offers outstanding grip on both rough roads as well as pavement in all weather without compromising on speed - Single-layer SRC casing delivers an incredibly supple ride with superior rolling efficiency at a super low weight - Race Shield puncture protection provides superior puncture protection without compromising speed or road feel - Carbon/Kevlar Composite bead keeps the tire secured to the rim and provides greater strength to withstand the higher pressures needed for road tires

- To keep you burning up the trail, the Jack Rabbit features a tread design with small ramped knobs

Challenge's S.C. Seamless Latex Cross Tube is hand made for the highest quality. Latex tubes are usually lighter and roll with less resistance than standard butyl tubes. They also resist punctures. The S.C. fits tires 28 to 35mm wide, and has a 47.5mm-long valve with a removable core. - 72 grams

Challenge's S.C. Seamless Latex Tube is hand made for the highest quality. Latex tubes are usually lighter and roll with less resistance than standard butyl tubes. They also resist punctures. The S.C. fits tires 19 to 28mm wide, and has a 47.5mm-long valve with a removable core. - 60 grams

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 handmade clincher combines a supple, 300TPI SuperPoly casing with natural rubber tread for long distance comfort, confident cornering, and quick handing. This tire includes PPS Ganzo, a lightweight and supple Puncture Protection System placed between the tread and casing to increase resistance to punctures.

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 handmade clincher combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo + PPS2, and a high mileage, grippy, natural SMARTplus tread compound. 260TPI SuperPoly casing.

Race it hard or just head off the beaten path. The Strada Bianca wraps Challenge's proven herringbone tread pattern further around a large volume casing and adds a gravel specific construction to take you comfortably over less-than-perfect surfaces. This is your tire for rough roads, packed dirt, and most gravel surfaces. This handmade clincher combines a supple, yet durable Corazza Armor casing for improved sidewall protection, excellent puncture-resistance from our PPS Ganzo + PPS2, and a high mileage, grippy, natural SMARTplus tread compound. 260TPI SuperPoly casing.

Race it hard or just head off the beaten path. The Strada Bianca wraps Challenge's proven herringbone tread pattern further around a large volume casing and adds a gravel specific construction to take you comfortably over less-than-perfect surfaces. This is your tire for rough roads, packed dirt, and most gravel surfaces. This TLR clincher with 120TPI nylon casing provides both performance, durability, and puncture protection when combined with the appropriate tubeless sealant.

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

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

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

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

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 your bicycle easier to ride. - 42mm valve: 70 grams - 60mm valve: 80 grams - 80mm valve: 90 grams

Continental's Revo Sealant is specifically designed for use with their Revolution tubeless-ready tires and it's great for tubular tires, too. It seals punctures and contains no protein or ammonia so it's safe for use in all wheels, too.

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 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.