Fat Bikes

The Heyday! Advent is a machine made with adventure in mind. 26 x 4.6" tires have no trouble rolling over loose terrain or tracking through overgrown paths. The aluminum frame blends durability and weight savings with stable geometry for roaming far and wide. And Heyday!'s versatility is unmatched: Alternator 2.0 dropouts allow for multiple drivetrain setups; cargo mounts let you load up for a day or a week; your wheel and tire options also include 27.5 fat and 29+. All this, paired with microSHIFT's trusty Advent wide-range 9-speed drivetrain, will remove "unrideable" from your vocabulary.

Balanced weight distribution for maximum traction and a powerful pedaling position keep the Bigfoot 1 charging forward all year. - Evolved, thoughtful details make it even better. - Built from the powder-up with?our holistic approach to fit & geometry. - 27.5x4.5” tires for max traction and floatation in the deep stuff. - Top tube clearance is critical in fat biking. - Frame details add versatility. - Optimized for the cold, capable year-round. - No Other Way Limited Lifetime Warranty.

ALL SEASON EVOLUTION Balanced weight distribution for maximum traction and a powerful pedaling position keep the Bigfoot 2 charging forward all year. The redesigned Bigfoot elevates fat bike performance to downright fun, anywhere, anytime. The confident, aggressive handling tracks precisely where you want on a descent or technical trail, and the simple one-by drivetrain offers reliable, simple shifts with gloved hands. With maximum traction in the most extreme riding conditions imaginable, Bigfoot claws its way up, and the finely tuned steering geometry and massive tires provide confident, aggressive handling to rip back down. The Bigfoot excels in all-season weather and extreme terrain to make every ride big fun. PROGRESSIVE DESIGN Built from the powder-up with our holistic approach to fit & geometry. A combination of longer reach, slack head tube angle and steep seat tube angle gives every Bigfoot a powerful pedal position, increased climbing traction and added control when descending. FAT’S WHERE IT’S AT 75mm wide 27.5” rims and frame clearance for up to 4.6" tires to put more rubber onto whatever surface you're riding and allow for lower pressures and greater traction. FRAME FEATURES Evolved, thoughtful details make it even better. Generous standover clearance and extra stiffness provided by 12x197mm thru-axles and internally routed cables make the Bigfoot’s aluminum frame ideal for extreme terrain. WINTER RIDER Optimized for the cold, capable year-round. All models feature disc brakes with DOT fluid or cable actuation for consistent performance over varying temperatures. When included, dropper posts are spec’d for reliable cold weather performance. MULTI-FUNCTIONAL Frame details add versatility. Rack mounts in the rear, bottle mounts above and beneath the down tube and triple mounts on the fork give you the option of running a barebones setup or loading up for a massive excursion. STANDOVER HEIGHT Top tube clearance is critical in fat biking. Getting off the pedals in deep snow requires lots of space over the top tube. Bigfoot strikes a perfect balance between max clearance and making space for a frame bag in the front triangle.

The confident, aggressive handling tracks precisely where you want on a descent or technical trail, and the simple one-by drivetrain offers reliable, simple shifts with gloved hands. - Evolved, thoughtful details make it even better. - Built from the powder-up with?our holistic approach to fit & geometry. - 27.5x4.5” tires for max traction and floatation in the deep stuff. - Top tube clearance is critical in fat biking. - Frame details add versatility. - Optimized for the cold, capable year-round. - No Other Way Limited Lifetime Warranty.

ALL SEASON EVOLUTION Balanced weight distribution for maximum traction and a powerful pedaling position keep the Bigfoot S 1 charging forward all year. The redesigned Bigfoot elevates fat bike performance to downright fun, anywhere, anytime. The confident, aggressive handling tracks precisely where you want on a descent or technical trail, and the simple one-by drivetrain offers reliable, simple shifts with gloved hands. With maximum traction in the most extreme riding conditions imaginable, Bigfoot claws its way up, and the finely tuned steering geometry and massive tires provide confident, aggressive handling to rip back down. The Bigfoot excels in all-season weather and extreme terrain to make every ride big fun. PROGRESSIVE DESIGN Built from the powder-up with our holistic approach to fit & geometry. A combination of longer reach, slack head tube angle and steep seat tube angle gives every Bigfoot a powerful pedal position, increased climbing traction and added control when descending. FAT’S WHERE IT’S AT 75mm wide 27.5” rims and frame clearance for up to 4.6" tires to put more rubber onto whatever surface you're riding and allow for lower pressures and greater traction. FRAME FEATURES Evolved, thoughtful details make it even better. Generous standover clearance and extra stiffness provided by 12x197mm thru-axles and internally routed cables make the Bigfoot’s aluminum frame ideal for extreme terrain. WINTER RIDER Optimized for the cold, capable year-round. All models feature disc brakes with DOT fluid or cable actuation for consistent performance over varying temperatures. When included, dropper posts are spec’d for reliable cold weather performance. MULTI-FUNCTIONAL Frame details add versatility. Rack mounts in the rear, bottle mounts above and beneath the down tube and triple mounts on the fork give you the option of running a barebones setup or loading up for a massive excursion. STANDOVER HEIGHT Top tube clearance is critical in fat biking. Getting off the pedals in deep snow requires lots of space over the top tube. Bigfoot strikes a perfect balance between max clearance and making space for a frame bag in the front triangle.

Why follow tracks when you can make your own? Experience the "Foot out, flat out" fun of fat biking in any seasons. Whether you're tackling fresh snow pack or drifty sand dunes for days, the new Yukon will keep you rallying your favorite terrain in a whole new way.

Farley 5 is the ultimate go-anywhere fat bike. Arctic tundra? Farley's game. Sandy desert singletrack? Farley's lofty tires will keep you afloat. A winter bikepacking mission through rugged terrain? Sounds like a walk in the park. Farley's all-new geometry is more capable than ever with a slacker head tube angle for more stability and a steeper seat tube angle for pedaling efficiency and comfortable reach. Up front, its carbon fork is loaded with tons of mounts, so you'll be able to load up gear for the adventure of your dreams. - All the mounts make it easy to add accessories and customize Farley for how you want to roam. - It comes with a carbon fork that has lower leg mounts for gear cages, mounts for our custom front rack, and rubber bumpers to protect the dropouts when the front wheel is removed. - Its huge 4.5-inch tires will keep you floating over snow, sand, mud, and dirt, - The new progressive trail geometry feels more capable and confident than ever. - The internally routed dropper post lets you move around on the bike and get behind the saddle on steep descents.

Farley 7 is a burly fat bike built for roaming trails no matter the season. From dusty summer doubletrack to ice-packed singletrack, the huge 4.5-inch tires give you sure-footed stability and tons of traction. A suspension fork takes the sting out of rowdy roots and rocks while the new, slacker head tube angle gives you more confidence when the trail turns steep. Mounts all over the frame make it easy to equip it with all of your essentials for adventure. - All the mounts make it easy to add accessories and customize Farley for how you want to roam. - The suspension fork eats up rocks and roots for a smooth ride, and it also slackens the head tube angle for added confidence and stability. - You'll stay afloat on snow, sand, mud, and dirt thanks to its huge 4.5-inch tires. - The new progressive trail geometry feels more capable and confident than ever. - The internally routed dropper post lets you move around on the bike and get behind the saddle on steep descents.

Farley 9 Winter Edition is the ultimate fat bike for the explorer who doesn't want to hold back. What sets this Farley apart is its fully-equipped, frame-specific package of racks and bags for loading up with everything you need to get far, far, far beyond the beaten path. Its extra-wide 4.5-inch tires give you amazing traction over loose terrain and the new progressive trail geometry gives you extra stability and efficient pedaling. The frame and fork are loaded with extra mounts for adding even more accessories. - It's a bike that's built for big adventures with custom accessories to make any adventure better. - It comes with a carbon fork that has lower leg mounts for gear cages, mounts for our custom front rack, and rubber bumpers to protect the dropouts when the front wheel is removed. - Its huge 4.5-inch tires will keep you floating over snow, sand, mud, and dirt. - You get plenty of racks and bags for loading up all of the essentials for the ultimate bikepacking adventure. - The internally routed dropper post lets you move around on the bike and get behind the saddle on steep descents.

Farley 9.6 is a capable and ready carbon fatbike for riders who want to charge through snow drifts and sand dunes. Its OCLV carbon frame keeps your ride light, while huge 4.5-inch tires keep you floating in the deep stuff. Its built up with a SRAM GX Eagle drivetrain that you can count on for precise shifts and strong braking power, even when things get icy. - It's a bike that won't shy away from a day on the trail, even if the weather goes south - The lightweight carbon frame keeps the setup remarkably light and nimble for a fatbike - Added cage and bag mounts on the fork let you explore way, way out, and pack for adventure - The lofty tire clearance gives you all the float you need to get through the deep and mucky stuff - The dropper post gives you plenty of room to move around on the bike in rough and rowdy terrain

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between. THE BIGGEST TIRE CLEARANCE Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", which is the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail. ONE BIKE, THREE WHEELBASE LENGTHS A key feature in all Otso bikes is adjustable geometry and the ability to adapt the bike for the ride ahead. The patented Tuning Chip rear dropout system can change wheelbase length by up to 20mm, raise or lower the bottom bracket height by up to 4mm, and change the head tube angle by +/- 0.5º. Use the rear position when the trails are loose and you need as much control as you can get. Use the front position when the snow is firm and the trails let you take turns with a little speed. No matter the conditions, Arctodus has an answer. DESIGNED FOR EXPLORING There's no need to wait for the trail groomer. Arctodus was made for foot trails, forest paths, and snow-covered frozen lakes. The bombproof steel frame can withstand the demands of an expedition. A large front triangle can fit a healthy full frame bag. The carbon fork has mounts on either side for cargo. A rear frame can be attached via mounts on the seat stays and Tuning Chip hardware. Even the geometry is catered for exploration, with extra trail for optimal flotation and bottom bracket height that will ride above deeper snow. Whether you're exploring local trails or a national forest, you can trust Arctodus to keep you riding. NARROW Q FACTOR Arctodus has a 100mm bottom bracket. This is 30-40mm narrower than other fat bikes that have the same tire clearance. Ride with massive tires without compromising handling. SUSPENSION CORRECT All Otso frames feature suspension-corrected geometry. Arctodus is compatible with suspension forks that have up to 120mm of travel. A few options are available on the Custom Bike Builder. STABILITY & FLOATATION Arctodus geometry was designed for optimal riding on fresh trails. The 68º head tube angle paired with massive tires gives Arctodus more trail than other fat bikes. Even the BB height was selected for clearance in deep snow. DROPPER COMPATIBLE Snowy trails are good with dropper posts, too. A port near the bottom bracket fits a cable and housing for a cable-actuated dropper post.

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between. - The Biggest Tire Clearance Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail. - One Bike, Three Wheelbase Lengths A key feature in all Otso bikes is adjustable geometry and the ability to adapt the bike for the ride ahead. The patented Tuning Chip rear dropout system can change wheelbase length by up to 20mm, raise or lower the bottom bracket height by up to 4mm, and change the head tube angle by +/- 0.5º. Use the rear position when the trails are loose and you need as much control as you can get. Use the front position when the snow is firm and the trails let you take turns with a little speed. No matter the conditions, Arctodus has an answer. - Designed for Exploring There's no need to wait for the trail groomer. Arctodus was made for foot trails, forest paths, and snow-covered frozen lakes. The bombproof steel frame can withstand the demands of an expedition. A large front triangle can fit a healthy full-frame bag. The carbon fork has mounts on either side for cargo. A rear frame can be attached via mounts on the seat stays and Tuning Chip hardware. Even the geometry is catered for exploration, with extra trail for optimal flotation and bottom bracket height that will ride above deeper snow. Whether you're exploring local trails or a national forest, you can trust Arctodus to keep you riding. - Narrow Q Factor Arctodus has a 100mm bottom bracket. This is 30-40mm narrower than other fat bikes that have the same tire clearance. Ride with massive tires without compromising handling. - Suspension Correct All Otso frames feature suspension-corrected geometry. Arctodus is compatible with suspension forks that have up to 120mm of travel. A few options are available on the Custom Bike Builder. - Stability and Floatation Arctodus geometry was designed for optimal riding on fresh trails. The 68º head tube angle paired with massive tires gives Arctodus more trail than other fat bikes. Even the BB height was selected for clearance in deep snow. - Dropper Compatible Snowy trails are good with dropper posts, too. A port near the bottom bracket fits a cable and housing for a cable-actuated dropper post.

Voytek changes the fat bike game. It is fast, lightweight, agile, and can handle even the sharpest turns of your local singletrack with ease. Think of it as a mountain bike that can fit fat tires with adjustable geometry. We paired a narrow pedal stance-aka Q factor -with aggressive XC race geometry to build a fat bike that can intuitively handle snowy trails like your mountain bike can handle summer singletrack without sacrificing ride quality. When the weather turns and the snow turns to dirt, swap out the 26" fat wheelset for a 29" MTB wheelset to keep the party going all year. THE Q-FACTOR IS THE KEY The Voytek has the narrowest Q-factor of any fat bike in the world at 183mm. With a narrow Q-factor, your weight is closer to the centerline of the bike. This is especially important when cornering because it allows for tight, responsive control - the wider Q-factor found on most fat bikes spreads out your pedals and creates a floppy, unstable feel. The Voytek frame was designed around an 83mm bottom bracket, whereas most fat bikes have a bottom bracket north of the 100-110mm range. With the Voytek, you don't need to compromise agile handling to ride up to 4.6" tires. ONE BIKE, THREE WHEELBASE LENGTHS Our Tuning Chip rear dropout is at the heart of the versatile Voytek. With a quick change in positions, the wheelbase of the Voytek can be extended or shortened by up to 20mm, which also changes the bottom bracket height by up to 4mm and the head tube angle by +/.5º. In the forward position, you've got an aggressive, responsive Voytek for your next race. In the rear position, you've got that same intuitive handling but with added stability to make it easier to ride in deep snow or adverse terrain. In the middle, well, that's the best of both worlds. PLUS OR FAT? FAT OR PLUS? We're internally divided here as to whether the Voytek is a plus bike that can handle fat tires or if the Voytek is a fat bike that has the handling worthy of a plus bike. When the trails are packed with snow, we're riding 4" tires. When spring comes and the trails turn to dirt, we swap out tires and ride 29" plus until winter returns. The versatility of the Voytek blurs the lines of plus and fat, keeping the party going all year long. MODERN GEOMETRY Voytek's longer top tube, short chainstays – the shortest in the world for a fat bike – and slightly slacker head tube angle mean more speed and more fun. SUSPENSION CORRECT Voytek's suspension-corrected geometry is compatible with an Otso carbon rigid fork or up to 120 mm travel suspension fork. COMPETITOR TESTED, ISO APPROVED Voytek's patent-pending frame design exceeds all ISO frame safety standards and has been proven over thousands of miles of test riding, including the legendary Iditarod Invitational and Arrowhead 135 competitions. DROPPER COMPATIBLE The EPS molded carbon frame of the Voytek was designed to accept internally routed dropper seat posts.

Why follow tracks when you can make your own? Experience the "Foot out, flat out" fun of fat biking in any seasons. Whether you're tackling fresh snow pack or drifty sand dunes for days, the new Yukon will keep you rallying your favorite terrain in a whole new way.

The All-Around Fat Bike Wednesday sits in the middle of our Trail category, but don't let that fool you into thinking that's its only use. With Wednesday, we borrowed elements from some of our Trail and Touring models to create a versatile fat tire trail bike that can truly handle anything you want to attempt. If you do an equal amount of off-road touring as you do hitting trails, Wednesday's ability to play both parts equally will suit you well. Or, if you're looking for a fat bike and don't need the fattest tires on the market, Wednesday's 26 x 4.6" tire clearance is just the ticket. - Modern mountain standards: stealth dropper post routing, 44mm headtube, suspension correction, front and rear thru-axles - Full suite of useful braze-ons: front and rear racks, multiple sets of three-pack mounts, fenders - Full-forward, short chainstay position: 26 x 3.8" tires on 80mm rims; full-rearward, longer chainstay position: 26 x 4.6" tires on an 80mm rim Specs: - Rear Dropout Configuration: Horizontal slotted with optional vertical dumpout - Rear Hub Spacing: 12 x 177mm (Surly axle included); 10 x 170mm with Surly 10/12 Adapter Washers (not included) - Front Hub Spacing: 15 x 150mm (Surly axle included) - Rear Brake: Disc - 51mm I.S. (203mm max rotor) - Front Brake: Disc - 51mm I.S. (203mm max rotor) - Head Tube: Ø44mm - Steerer Tube: Ø28.6mm (1-1/8") - Crown Race: Ø30mm (1-1/8") - Stock Headset Upper (S.H.I.S.): ZS44/28.6 - Stock Headset Lower (S.H.I.S.): EC44/30 - Front Derailleur (Clamp): High direct mount top-pull (Ø34.9mm) - Max Chainring (CL): 1x (Fat bike 170): 34T; 2x (Fat bike 170): 26/38T; 2x (Surly OD): 22/36T - Tire Clearance Frame: 26 x 4.3" (rear axle position); 26 x 3.8" (front axle position); 29 x 3.0" - Tire Clearance Fork: 26 x 5.25"; 29 x 3.0" - Rigid Fork Spec: 468 x 47mm - Max Suspension Fork Length: 511 x 51mm (Fatbike 100mm) - Bottle Mounts Frame: 2 Standard (XS - M); 3 Standard (L - XL) - Bottle Mounts Fork: 2 Three-Pack - Rack Mounts Frame: Yes (upper and lower threaded) - Rack Mounts Fork: Yes (upper, lower, and mid-blade threaded) - Fender Mounts Frame: Yes - Other Features: Internal dropper post routing compatible