"Fast" and "fat bike" may seem mutually exclusive until you've ridden Beargrease. Its 27.5 x 4.0" wheel and tire combo offer better rollover than your standard fat bike, and Beargrease's carbon fiber frameset is lightweight yet stiff for excellent power transfer. But, being svelte doesn't mean sacrificing utility—ample cargo-mounting points make this the best fat bike for light-and-speedy adventures. SRAM's X01 Eagle 1 x 12 drivetrain provides fast and light shifting action with a gear range for tackling any trail obstacle. High-Modulus Carbon Fiber Frame This material offers improved stiffness, better vibration damping, excellent durability, and weight savings compared to other frame materials. Beargrease Geometry 440mm chainstays, longer front/center, short stems, and wide bars create room to move and add confidence while maneuvering on tight trails. Standover height is improved, allowing the addition of an X-Small frame size. This geometry results in a fat bike that rides like a trail bike. It is stable, steers well in loose conditions, and still remains nimble and agile despite the massive wheels and tires. A low bottom bracket height is also key, keeping the rider's center of gravity low, and making dabbing, dismounting, and remounting easier. 27.5 x 4.0" Wheel & Tire Size Beargrease rolls on 27.5 x 3.8" wheels and tires. For groomed snow or dirt, the increase in diameter provides increased rollover, a longer contact patch, and the flotation of a 4.0" tire without added rolling resistance. Kingpin Deluxe Fork Featuring a full carbon design, the Kingpin Deluxe Fork is lightweight and durable, and features an amazing array of accessory bosses to help you make the most of your Beargrease fat bike: - Dual sets of Three-Pack bosses on each leg accept bottle cages or our Anything Cage accessory - Lowrider mounts work with our Down Under front rack for a traditional touring setup - Internal dynamo hub wire routing keeps the front end clean for those upgrading to dyno hubs - 150 x 15mm thru-axle design boosts stiffness and aids in solid tracking on the trail
When describing a fat bike, you wouldn’t typically describe it as agile. That’s where the Voytek is different. 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. 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. With the Voytek, you don’t need to compromise agile handling to ride up to 4.6” tires. 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 bottom bracket height by up to 4mm. 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. The Voytek can run a wide range of wheel sizes: 27.5" or 29" plus MTB tires to 26" x 4.6" fat tires. 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. Frame Voytek™ patented carbon frame, Tuning Chip™ dropout system, 177x12 rear hub spacing, Plus-Fat Narrow Q-factor design with PF107BB, guided internal rear derailleur routing, accommodates internally routed dropper post, external brake routing, downtube and chainstay protectors, matching allow bottle cage bolts Fork Voytek™ rigid carbon fork, suspension corrected, tapered steerer tube, 485mm axle-to-crown, 51mm offset Headset Wolf Tooth Precision Headset, IS42/IS52 Rear derailleur Shimano SLX M7100, 12-speed Front derailleur None, 1x only bike Shifters Shimano SLX M7100 Trigger, 12-speed Cassette Shimano SLX M7100, 10-51t, 12-speed Brakes Magura MT4 Cranks Race Face Aeffect 83mm with 175mm crankarms and custom offset Wolf Tooth CAMO system, 32T chainring (size Small frame ships with 170mm crankarms, 170mm crankarms are available on other sizes by request) Bottom bracket Race Face, PF107, Ø41mm Handlebar Race Face Ride, 740mm riser Grips Wolf Tooth silicone grips Stem Race Face Ride (60mm standard. Other lengths available by request) Seatpost Race Face Ride, 30.9mm Seat WTB Volt Wheels Lithic sealed cartridge bearing 6-bolt rotor hubs with tubeless ready 70mm Lithic Rhyolite aluminum rims. Tubeless kit upgrade available. Tires Schwalbe Jumbo Jim 26 x 4.0 LiteSkin Chain Shimano SLX 12-speed Frame Sizes S, M, L, XL Weight (size M) 25.4 lbs with rigid fork set up tubeless
Why follow tracks when you can make your own? Experience the "foot out, flat out" fun of fat bike riding in any season. Whether you're tackling fresh snow pack or drifty sand dunes for days, the Yukon will keep you rallying your favorite terrain in a whole new way. Low Center of Gravity Playful Trail Bike - Sloping "low slung" front triangle design provides a low center of gravity & plenty of knee clearance for technical maneuvering and countersink control in deep conditions. Maximum Heel Clearance with Low Q-Factor - With a heavily swaged rear triangle including dropouts, seatstays, and chainstays, this versatile design allows even the warmest of riding boots to be worn, while the narrow Q-Factor crank provides a more natural feeling cycling experience. Adjustable Wheelbase and Tire Size Flexibility - The horizontal adjustable drop out system allows for +/- 15mm rear center length adjustment and tire sizing up 27.5 X 4.5" for maximum floatation to dial in stability & playful handling.
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