You have places to go, people to see, and fitness goals to achieve. We get it—life moves pretty fast, so it's a good thing we made Sirrus to help you with all of it. Wherever you're heading, Sirrus will take you there. Sirrus features a super light Aluminum Alloy and carbon fiber construction, as well as reliable Shimano components that are built to withstand years of daily abuse on the world's pavement. Powerful hydraulic disc brakes provide reliable stopping power in any condition, and comfortable, ergonomically designed Body Geometry touchpoints are there to take the sting out of longer rides. So, as you push yourself to reach your goals, you'll feel more connected to your bike and know that you have the perfect partner with Sirrus. - Carbon fact 9 frame and fork saves over 1.4 pounds (.6kg) and is a piece of art all unto itself. - Through axle hub connection for positive wheel alignment and no rub Disc brakes. - Wide range 2x9 Shimano Sora Road components for intuitive and precise shifting.
For the construction of the Tarmac, we utilized advanced aerospace composite optimization software to revolutionize the construction and layup of our new FACT 9r carbon. 500 pieces creating 7 different sizes with the same tuned ride–that’s Rider-First Engineered. We examine every ply of carbon on every frame size to ensure that all of our performance targets come through. To make sure you get the perfect ride, every frame gets a unique layup schedule with different ply arrangements, orientations, quantities of material in specific areas, and sometimes, even exclusive thicknesses and types of carbon itself. Aerodynamics is the most important thing we can do to make you faster, but with the Tarmac, we added aero features without any cost to weight. Through development, areas were discovered where we could add aero for free—a new fork shape and dropped seatstays with aero tubes. The result? A Tarmac that’s approximately 30 seconds faster over 40 kilometers. The updated the geometry is based on countless Retül data points and professional rider input. This enabled us to develop a Performance Road Geometry that perfects the combination of a responsive front-end and short wheelbase, which delivers instantaneous response and optimal power transfer.
This thing called 'gravel riding' is still evolving, still being defined. What's next? Hop on the new Diverge Expert EVO and you tell us. It's designed to get aggressive, to push the boundaries of what we thought was possible on a gravel bike. With flat bars and geometry even more progressive then the new drop bar Diverge you better hang onto your flannel. We've significantly increased the reach, slackened the head-tube, and lowered the bottom bracket, to put you 'in' the bike for a super planted feeling. From sending technical single track to ripping flowing fire road descents, if you're looking for a partner to take your gravel riding to new levels, nothing's faster, more fun, or rowdier than the Diverge EVO. With a Premium E5 Aluminum frame and our latest Future Shock 2.0 with an adjustable hydraulic damper offering 20mm of travel, the Diverge Expert E5 is uniquely qualified to tackle aggressive trails at high speed. The bike's build is MTB-inspired, with SRAM GX Eagle 1x12 shifting and extra stopping power thanks to SRAM Level TLM brakes. A TranzX dropper post is standard, as well as our latest gravel tire designed for incredible traction, the new Rhombus Pro 42mm, on DT Swiss G540 alloy wheels. - Our Premium E5 Aluminum frame provides a stiff, light, and durable platform. When mated to our full carbon FACT fork, the Diverge EVO becomes a light, lively and versatile bike ready to tackle the most technical gravel and dirt as aggressively as you could wish. - Speed, control, and confidence - Future Shock 1.5 is ideal technology for the gravel rider. With 20mm of axial compliance, Future Shock 1.5 is progressively tuned specifically for gravel riding. This keeps you confident and in control, able to keep the power down and stay off the brakes over rough dirt roads and in thick loose gravel, all while keeping your hands, arms, and neck fresh. - With the Diverge EVO, we took our new progressive gravel geometry to new levels. We've lengthened the frame 30mm over a drop bar Diverge (Size Medium), lowered the bottom bracket, and slackened the head tube. This gives the Diverge EVO more confidence over technical terrain while keeping the cockpit comfortable with flat bars. It also allows for a short stem to make all that stability feel nimble and quick at the bars. - Nothing unlocks a bike's capability like tire clearance, so we gave the Diverge EVO a whopping 47mm of tire clearance with a 700c wheel and 2.1" with a 650b wheel. Thanks to a drive-side chainstay utilizing a machined alloy beam behind the chainrings we've created clearance without using a fragile dropped chainstay design or increasing chainstay length.
Whether your goal is to escape on gravel back roads, far from cars and crowds, or drop the hammer at the front of your favorite gravel race, no bike does it better than the new Diverge. It's quite simply the fastest, most capable and just maybe the most fun bike we've ever made, delivering a ride that's quick and lively under power, but stable and confidence inspiring when the terrain gets rough. From Future Shock 1.5 and all-new gravel geometry, to category leading tire clearance, the new Diverge represents everything we've learned over more than 40 years of riding road, gravel and dirt. The Diverge writes an entirely new chapter in the gravel bike category, so you can dream up entirely new rides. It's the ultimate getaway vehicle. Gravel riding may be a 'new' sport, but our Diverge Sport Carbon has been developed thanks to over four decades of experience. It's got our Future Shock 1.5 and a FACT 8r carbon frame for a fast, confident and comfortable ride on road, in the dirt, and over thick gravel. With gravel-inspired SRAM Apex 1 1x11 shifting and DT Swiss G540 wheels the Diverge Sport's as capable as it is versatile. With Kanza winning Pathfinder Pro 38mm tires, the same rubber we spec on the S-Works Diverge, you're ready to ride as fast and as far as you want. - With a FACT 8r carbon frame, the Diverge Sport frame is incredible capable and race bike light. Pin it for your local dirt climb KOM, or grind up a giant back country peak, the light and lively Diverge will get you there faster. - Speed, control and confidence - Future Shock 1.5 is ideal technology for the gravel rider. With 20mm of axial compliance, Future Shock 1.5 is progressively tuned specifically for gravel riding. This keeps you confident and in control, able to keep the power down and stay off the brakes over rough dirt roads and in thick loose gravel, all while keeping your hands, arms and neck fresh. - We tossed gravel geometry 'status-quo' out the window. The new Diverge has the most progressive geometry we've ever created for a drop bar bike, giving riders a capable and stable bike in the dirt, that still feels responsive and nimble on the road. We've increased the frame's reach, introduced a slacker head tube and a longer offset fork. All this creates incredible confidence with a planted feeling in the dirt, while spec'ing shorter stems keeps the overall cockpit length the same and the steering lively. We've kept the bike's BB low to increase stability, but high enough to utilize with 650b wheels if that's your jam. - We've given the Diverge plenty of rack mounts, including fork and top tube mounts, to ensure you can take what you need, no matter how far you plan to go, or how long you plan to stay out. - Nothing unlocks a bike's capability like tire clearance, so we gave the new Diverge a whopping 47mm of tire clearance with a 700c wheel and 2.1" with a 650b wheel. Thanks to a drive side chain stay utilizing a solid beam of carbon behind the chain rings we've created clearance without using a fragile dropped chain stay design or increasing chain stay length.
Let's get something clear, the Stumpjumper EVO Alloy isn't a "normal" trail bike. It's built to get gnarly, plain and simple. Featuring the same all-new design as its carbon brethren including an adjustable head tube angle, 150mm of performance tuned travel, the adaptability of S-Sizing, and SWAT Door integration in a lightweight yet tough M5 Alloy chassis, you're going to be able to bomb down trails that you thought you couldn't touch without a full-blown DH rig. Spec'd with a no-fuss SRAM NX Eagle 12-speed drivetrain, bomber 30mm-wide alloy wheels, and plush Fox FLOAT Performance suspension, there s no question the Stumpjumper EVO Comp Alloy is dressed to shred. - All the travel in the world is useless without the proper shock tuning and kinematics. For the new Stumpjumper EVO design, we prioritized kinematic performance. Applying lessons learned while developing the Enduro, then following that with more than 1,000 hours of field and suspension lab development, we've not only improved the pedaling performance of the Stumpjumper, but we've made it more capable, agile, and lively. We increased anti-squat, so the suspension better resists pedal bob, and we further improved bump performance on square-edge hits. Bottom line? This thing shreds trails, not legs. - Rider-First Engineered frames use a size-specific approach to ride characteristics that ensures benchmark handling and flawless performance, regardless of frame or rider size. Whether you re a jump-happy grom riding an S1, or a DH-fiend giant in need of the lengthy S6, you'll experience the same ride traits, rail-sharp cornering and balanced front and rear stiffness, at the lightest-possible weight. - The S-Sizing geometry of the new Stumpjumper EVO is our most progressive yet. Long, low, slack, short offset fork, steeper seat tube angle, these are requirements for modern progressive riding. But not everyone jibs the same way, which is why the geo on the new Stumpjumper EVO is fully adjustable with six different settings. You can adjust the BB height by 10mm, you can adjust your head angle by two-degrees, and you can make these adjustments independently of each other. Finally, if you want to go full-party mullet-mode, the EVO lets you run a 27.5-inch rear wheel mated with a 29-inch front. - We introduced the SWAT door on the Stumpjumper in 2016, adding room IN your frame for those "oh sh**t" necessities like pumps and spare tubes, and immediately rendering jersey pockets redundant."
Whether your goal is to escape on gravel back roads, far from cars and crowds, or drop the hammer at the front of your favorite gravel race, no bike does it better than the new Diverge. It's quite simply the fastest, most capable, and just maybe the most fun bike we've ever made, delivering a ride that's quick and lively under power but stable and confidence-inspiring when the terrain gets rough. From Future Shock 2.0 and all-new gravel geometry to internal storage and category-leading tire clearance, the new Diverge represents everything we've learned over more than 40 years of riding road, gravel, and dirt. The Diverge writes an entirely new chapter in the gravel bike category, so you can dream up entirely new rides. It's the ultimate getaway vehicle. With a FACT 9r carbon frame and Future Shock 2.0, the Diverge Expert will have you riding faster and more confidently over more terrain than you ever imagined possible. SRAM's wireless Rival eTap AXS 12-speed groupset delivers quick, crisp shifting, and Roval Terra Carbon wheels mated to Pathfinder Pro 42mm tires ensure performance across smooth pavement, dirt roads, and gravel tracks. A Roval Terra seat post keeps the Diverge Expert perfectly balanced for the ultimate ride. - Nothing unlocks a bike's capability like tire clearance, so we gave the new Diverge a whopping 47mm of tire clearance with a 700c wheel and 2.1 with a 650B wheel. Thanks to a drive-side chainstay utilizing a solid beam of carbon behind the chainrings we've created clearance without using a fragile dropped chainstay design or increasing chainstay length. - Speed, control, and confidence - Future Shock 2.0 is the ultimate technology for the gravel rider. With 20mm of axial compliance and a hydraulic damper, Future Shock 2.0 suspends the rider, not the bike. This keeps you confident, in control, and able to keep the power down and stay off the brakes over rough dirt roads and in thick loose gravel, all while keeping your hands, arms, and neck fresh. Since Future Shock 2.0's damper is adjustable, you'll be ready for the rough stuff and efficient on smooth pavement. - The more capable your bike, the bigger your rides get, so Diverge borrows SWAT internal storage from the legendary Stumpy. The SWAT door lets you utilize space in the down tube to store tools, a flat kit, nutrition, and even our SWAT Jacket. It keeps weight off your body, low in the bike for better handling, and makes you more self-sufficient, so get out there. SWAT's got your back. - We tossed gravel geometry status-quo out the window. The new Diverge has the most progressive geometry we've ever created for a drop-bar bike, giving riders a capable and stable bike in the dirt that still feels responsive and nimble on the road. We've increased the frame's reach and introduced a slacker head tube and a longer-offset fork. All this creates incredible confidence with a planted feeling in the dirt, while spec'ing shorter stems keep the overall cockpit length the same and the steering lively. We've kept the bike's BB low to increase stability, but high enough to utilize with 650B wheels, if that's your jam. - We've given the Diverge plenty of rack mounts, including fork and top tube mounts, to ensure you can take what you need, no matter how far you plan to go or how long you plan to stay out. - With a FACT 9r carbon frame, the Diverge Expert frame is incredibly capable and race-bike light. Pin it for your local dirt climb KOM, or grind up a giant backcountry peak—the light and lively Diverge will get you there faster.
Don’t get us wrong, we’re all for racing. Grand Tour top steps, Classic’s Monuments—they’re in our DNA. But sometimes riding simply to ride, riding for the love of riding, is just what we need. And this is what the Aethos lives for. Sure, it’s given nothing up to performance, and happens to be the lightest frame out there, but with no compromise to style. Aethos: Billions of calculations in the pursuit of one thing—the perfect ride. - The Aethos frame has been designed with the perfect combination of ultimate ride feel, light weight, and style—from accelerating up steep pitches and descending technical descents, to all-day saddle comfort on even the longest coffee rides, the Aethos hits the mark. But how, you ask? By reinventing the traditional road shape found on bikes of the past, we’ve subtly altered these shapes to deliver massive gains in stiffness and balance, all without affecting weight or durability. Pair that with an entirely-new layup and process that we’ve perfected over multiple decades and you have the lightest frame out there (585 grams, S-Works, size 56cm). The Aethos is more than just a new bike, it’s the first of a new breed. - A featherweight frame is useless without confidence-inspiring ride characteristics, which is why we’ve developed the Aethos to have the perfect balance of front and rear stiffness combined with exceptional ride quality. By studying the flexing and breathing of carbon fiber, we were able to discover groundbreaking findings about how forces flow through frames. Just a few pedal strokes and you’ll realize this sublime ride sets a new standard. - Every detail, from the derailleur hangers to the fork expander plug have been designed with style, weight, and durability in mind—everything in pursuit for the perfect ride.
650b what? In the old days when randonneuring bikes ruled on long rides over mixed surfaces, the 650b tire size was perfectly suited for moving fast under control. Surly took this concept and applied it to the Straggler, a disc brake-equipped any-road type of bike bred from their revered Cross Check. The slightly smaller wheels accommodate smaller frame sizes and plump tire widths, creating options where few exist in this realm of bike riding. Disc brakes highlight the Straggler 650b story, sporting Hayes CX Experts with 160mm rotors front and rear. The athletic character continues with a SRAM Apex 2x10 drivetrain, giving you a useful gear range for any type of riding you can dream up, and continues with 32-hole alloy Alex Adventurer 2 rims wrapped in Surly's own super-versatile 650b x 41 Knard rubber. A Salsa Cowbell handlebar is great for riding on mixed terrain, too, giving you a bit more control when it's loose while retaining comfortable positioning for cranking into the wind. Make it your gravel explorer on weekends, your trusty commuter during the week, and go collect all the hand-ups when cyclocross season rolls around. This Straggler's lookin' for a good time and you seem like the type to oblige.
Venture away from the crowded bike lanes and jump aboard Surly's Midnight Special for grand adventure on a plethora of forgotten back roads. The Midnight Special smooths chunky tarmac and bumpy dirt with its vibration-damping Chromoly steel frame and plump 650b x 47 WTB Horizon tires, allowing you to chase skyline beyond the city in total comfort. TRP Spyre mechanical disc brakes are steadfast no matter the conditions, and SRAM's Rival 22 drivetrain has ample gearing for climbing mountain passes and gliding along expansive landscapes alike. Surly provides a few welcome touches of convenience to complement every ride, including three bottle mounts on the frame, front and rear rack provisions, and full fender mounts to keep you hydrated, well-prepared, and feeling sharp, even in the rain. The Midnight Special's touch points are appointed with Salsa's comfortable Cowbell bar and a WTB Volt Sport saddle, and thanks to modern, evolution-accommodating details like convertible dropouts, a 44mm headtube, and flat-mount brakes, you can count on the Midnight Special to be your partner in exploration through many years of service.
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