Road Frames

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.

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.

The Waheela C is a carbon-framed drop bar bike with adjustable geometry, unrivaled ride quality, and enormous tire clearance for 700c x 54mm, 650b x 54mm, or 29" x 2.1" tires. It has extra frame and fork mounting points for bottles and racks, easily accessible internal cable routing options, compatibility for 1x or 2x electronic or mechanical drivetrains, and the ability to run a dropper post. No matter the road ahead (or under the tire), the Waheela C is ready. GIANT TIRE CLEARANCE Gravel comes in all shapes and sizes, from the packed limestone of Southeast Minnesota to the chunky roads of the Flint Hills of Kansas. The Waheela C is equipped with tire clearance to handle the terrain of your next race. Where most gravel bikes can fit 650b x 50mm but only 40mm with bigger wheels, the Waheela C keeps on rolling, with space for 700c x 54mm tires. It'll run 700c x 35mm when the roads are tacky and tidy, 700c x 42mm when there's a bit more uncertainty, 700c x 54mm when the gravel road turns to ATV trails, and anything in between. The Waheela C can also fit 29" x 2.1", 27.5" x 2.1", or 650b x 54mm if 700c isn't really your thing. In short, the Waheela C is ready for the road ahead. ADJUSTABLE GEOMETRY Like all Otso bikes, the Waheela C sports our patented Tuning Chip rear dropout system, which allows you to change the length of your wheelbase and the height of your bottom bracket. Put the Tuning Chip in the back position to get the stability and comfort of a longer wheelbase for a full day of riding gravel. Switch to the front position to get the agile handling and responsiveness required by your next CX race. And the middle position? That's the best of both worlds. The adjustable geometry of the Waheela C allows you to ride any road or any trail without needing to switch bikes. UNRIVALED RIDE QUALITY Our proprietary Waheela geometry was developed by our engineers for stability, confidence, and comfort on rough terrain. Where many gravel bikes put extra weight on the front wheel, the Waheela C centers the rider over both wheels. This makes for a more stable ride while allowing the compliant rear triangle to come into play and absorb the bumps of a gravel road. Meanwhile, the lightweight EPS molded carbon frame adds responsiveness and readiness for a sprint up that next hill. After a long day on the saddle, you'll find yourself adding a healthy amount of miles to tomorrow's ride. EXTRA MOUNTING POINTS Waheela C features fork bottle bosses, extra down tube mounting points (6 total), as well as top tube gas tank mounting points. Numerous braze-ons allow Waheela C to accommodate water bottles, fenders, racks, frame bags, and more. DETAILS THAT MATTER Internal brake and shifter routing with sleeves, carbon access door under the bottom bracket for easier routing, front and rear thru-axle, and threaded bottom bracket for reliable, easy service. This also allows you to run that dropper post you've been dreaming about. COMPATIBLE WITH 1X OR 2X Waheela C is 1x and 2x compatible with mechanical and electronic drivetrains. It's also fully compatible with both Shimano Di2 and SRAM eTap AXS, in case you don't want to take advantage of internal routing options. QUALITY ASSURED Designed by the Otso engineering team, Waheela C frames are manufactured in one of the premier carbon fiber factories in Taiwan and come with a 5-year limited warranty. All bikes are inspected and assembled at our headquarters in Minneapolis, MN USA.

Our original all-road bike. The Warakin Stainless was one of the first bikes we built when we created Otso in 2016. It's been such a hit over the years that we haven't changed the geometry one bit. Stainless steel has a ride quality that is familiar, yet surprising—smooth like steel, lively like titanium. The Warakin Stainless is ready for your next century, three-day bike-packing trip, or afternoon group ride. STAINLESS STEEL The supple and smooth ride quality of steel meets the corrosion resistance and lively feel of titanium. Stainless steel is lighter than you think, loads of fun, and ready for your next full day on the saddle. It's a frame material that is as unique and seldom used as it is versatile and excellent for multiple types of riding. TIRE CLEARANCE 700c? Check! 650b? Double check! 29er? Triple check! Warakin Stainless has massive tire clearance because no two roads are the same. The Warakin Stainless has clearance for 700c x 51mm, 650b x 51mm, or 29" x 2.1" tires. Race gravel with 700c x 38mm semi-slicks, then swaps in 29" x 2.1" for that bike-packing trip with gnarly trails without needing to ride a different bike. TUNING CHIP™ The Tuning Chip rear dropout system allows for adjustable bike geometry by changing the wheelbase by up to 20mm, bottom bracket height by up to 4mm, and head tube angle by 0.2º. This means you can easily switch between a bike with the responsive, agile handling of a shorter wheelbase and a bike with the confidence and stability of a longer wheelbase just by flipping the Tuning Chip. Use the back position for stability and confidence with its longer wheelbase, lower bottom bracket, and slack head tube angle. The front position is ideal for winding singletrack or the CX course with its shorter wheelbase, higher bottom bracket, and steeper head tube angle. The center position is the best of both worlds. TOP PERFORMER Unparalleled ride quality results from the combination of stainless steel and carefully thought-out frame geometry. The Warakin Stainless was designed by our engineers in Minnesota and manufactured by top steel frame fabricators in Taiwan. PROGRESSIVE GEOMETRY Warakin’s progressive geometry takes a page from the cross-country MTB playbook. Increased top tube length and a shorter stem maintain stack and reach while providing a lively ‘can-do’ attitude on rougher terrain. DROPPER FRIENDLY A small port near the bottom of the seat tube allows for the cable routing of a dropper post. If you don't ride with a dropper, you probably won't even notice the port. FOR THE LONG HAUL Numerous frame braze-ons allow Warakin to accommodate cable routing clamps, three water bottles, fenders, racks, frame bags, and more. Three braze-ons on either side of the fork allow for additional storage.

The Warakin Ti is an efficient, responsive, sprightly titanium bike that can handle any road in any weather. Using the progressive geometry of its Warakin Stainless predecessor, the Warakin Ti pairs unrivaled ride quality with the superior quality of titanium. It's a lightweight, durable, lively machine that will carry the rider to where they choose to go while enjoying every pedal stroke along the way. SUPERIOR TITANIUM The 3Al/2.5V B338 grade 9 titanium that we use for the Warakin Ti is the same titanium that has been a bicycle industry favorite for decades, and with good reason. Equal parts science and magic, titanium is durable, lightweight, lively, corrosion-resistant, and timeless. The tubing is seamless, butted, clean, and strong. It's because of the superior quality of titanium that we chose this material to lend to our heralded Warakin geometry as a bike that will endure the roughest roads in the harshest conditions and tell the stories for decades to come. EXTRA TIRE CLEARANCE If a bike is meant to ride any road in any condition, it needs to fit tires and wheels that will get you to and from your destination, while handling every bump along the way. The massive tire clearance of the Warakin Ti was built with this in mind. It'll fit 29" x 2.1" for that road that doesn't actually appear on the map, just as easily as 650b x 50mm for windy forest trails, or 700c x 35mm (or 700c x 50mm if you want a little extra) for your next gravel race. Because a frame that can last forever needs to have the ability to adapt to whatever the road (and the future) may bring. VERSATILITY Like all Otso bikes, the Warakin Ti sports our patented Tuning Chip rear dropout system, which allows the rider to lengthen or shorten the wheelbase by up to 20mm and raise or lower the bottom bracket by up to 4mm. For chunky gravel on remote roads, the longer wheelbase of the rear position is set for stability and comfort. For a quick spin around town or the CX course, the front position makes for snappy handling and agile control. The middle position? That's the best of both worlds. The Tuning Chip rear dropout system was designed because the bike should be just as versatile as its rider. TOP QUALITY Designed by the Otso engineering team, Warakin Ti frames are built by top fabricators in Taiwan and come with a five-year limited warranty. All bikes and frames are inspected and assembled at our headquarters in Minneapolis, MN USA. PROGRESSIVE GEOMETRY The progressive geometry of the Warakin Ti takes a page from the cross-country MTB playbook. Increased top tube length and a shorter stem maintain stack and reach while providing a lively ‘can-do’ attitude on rougher terrain. EXTRA MOUNTING OPTIONS Numerous braze-ons accommodate three bottles, fenders, racks, cable routing clamps, frame bags, and more. Mix in the Wolf Tooth B-RAD System to even further increase on-bike storage options. SUSPENSION-READY The geometry of the Warakin Ti includes an axle-to-crown measurement of 420mm, which allows for a shorter suspension fork.

HAUL ASS, NOT CARGO A new breed of rider is emerging-one who loves the freedom and exploration that gravel culture was founded upon but who has a hunger to ride hard, to go all out, and to explore not just geography but personal limits. This frontier requires a new kind of gravel machine, one engineered not to roam the trails, but to race them. For these athletes, we engineered Aspero for pure, unapologetic speed, ready to take down finish lines, KOMs, PRs, and FKTs. A bike built without limits, for the riders looking to test them. It's stiff, Classics-racing stiff, and performs like you'd want a road bike to perform off-road. We think that makes sense, and it's what we were trying to do when we were stuffing bigger tires into our existing frames and swapping in aftermarket forks to get a 40mm tire up front. The flip-chip in the fork-we call it the Trail Mixer-keeps the trail measurement consistent whether you choose 700c or 650b tires. This maintains the bike's personality and handling characteristics when you switch from mid-fats to full-fat. There are as many different ways to do gravel as there are gravel bikes these days, but if you're toeing the start line, looking to stay with the lead group, and contend for the victory, Aspero is the bike to get you there.

Flat Out. That's how Aspero debuted under the characters of the Wednesday Night Rough Club two years ago, and that's how it's stayed. And because at Cervelo we know that flat out doesn't stay flat out for long without a little help from science, we've come back from the drawing board with a new Aspero. A faster Aspero, a lighter Aspero, and—dare we say it—an even better-looking Aspero. Our engineers like to say, "If it looks fast, it probably is"—but there's some truth to it, and Aspero-5 looks fast standing still. No cables in the wind, tubes derived from our library of aerodynamically proven shapes, and just a hint of a cut out in the seat tube to squeak out just a bit more tire clearance, add up to a bike that proves the adage. Lightweight Speed Some might say aero doesn't matter on a gravel bike, but if you've battled a headwind across an open prairie, the thirty-two grams of drag you'll save with the Aspero-5 come as a welcome respite. Most gravel racing is done without the benefit of a World Tour peloton—or World Tour tactics—and when it's your nose in the wind all day, it's nice to know your bike's shouldering a bit of the load. Two-Position Adjustment "Trail", or front wheel response to rider input, is the most critical factor in high-velocity handling. The ability to adjust trail with the two-position "Trail Mixer" to compensate for the extreme range of tire sizes ensures a uniform ride experience. Multiple Configurations We engineered the bike to fit most 700x42 or 650x49 tire/wheel combos, comfortably. Of course, there are variables—rim width, tire casing/tread depth—which will affect final clearance. IMPORTANT NOTE: We always recommend there to be 4mm of clearance around whichever tire/wheel combo is installed on the bike.