Mountain

Top Fuel 9.9 is our top-of-the-line full suspension mountain bike for endurance racers and multi-discipline riders. This down-country rig is built with an OCLV Mountain Carbon frame and spec'd to the hilt with high-performance parts, including a Fox Factory 34 Step-Cast fork, a SRAM XX1 Eagle drivetrain, carbon wheels, and SRAM Level Ultimate brakes. Top Fuel 9.9 flies through singletrack and rips descents, but it really shines when pushed to its full potential during grueling endurance races. It's right for you if... You've set your sights on endurance racing, and want every lightweight and performance advantage. You're looking for an efficient yet trail-capable rig that's fast on flats, soaks up rough terrain, and keeps you going mile after brutal mile. The tech you get A full OCLV Mountain Carbon frame, top-of-the-line 120mm Fox Factory 34 Step-Cast Float fork with GRIP damper, 115mm of rear travel with a Fox Factory Float shock, and a 1x12 SRAM XX1 Eagle drivetrain. Plus, wide carbon Bontrager Kovee Elite 30 wheels with a 108-tooth Rapid Drive hub for instant engagement, TwistLoc dual remote suspension lockout, Bontrager Line Elite Dropper, Bontrager Kovee Pro OCLV Carbon handlebars, and SRAM Level Ultimate brakes with carbon levers. The final word The Top Fuel 9.9 is built for speed and capability on any terrain, but its efficient, short-travel design excels in endurance events. An OCLV Mountain Carbon frame, top-of-the-line suspension, and carbon components come together for a nimble and insanely fun ride at any distance. Why you'll love it - It’s the ultimate endurance race bike—light, capable, and trimmed with high-performance components - Wider Kovee Pro 30 wheels provide better tire support so you can run lower pressure and get more traction - TwistLoc simultaneously locks out front and rear shocks for climbs and sprints with the simple Grip Shift-like motion - This short-travel trail bike gives you a suspension setup that’s capable in several MTB disciplines, and especially suited to endurance events - Make it yours: it's fully customizable through Project One

Fuel EX C is a carbon mountain bike frameset built for high-performance rides on a variety of trails. The best in Trek trail bike frame tech, a full OCLV Mountain Carbon frame, and 130mm of rear travel with a FOX Factory shock make Fuel EX C the ideal start for a dream trail bike or endurance race bike that's burly enough to go big on gnarly descents but quick enough to fly through the local singletrack circuit. It's right for you if... You're after that one holy grail mountain bike build that lets you power through flowy singletrack, hit gnarly descents and drops, and even compete in marathon races. You want the best all-around trail bike frame we offer, because you know a high-quality frame is the ticket to faster, bigger rides. The tech you get A light and stiff full OCLV Mountain Carbon frame, a FOX Performance shock with Trek's exclusive RE:aktiv damper, and an included Bontrager Line stem and Knock Block headset that prevents damage to the frame from spinning handlebars and fork crowns. Built for a PF92 bottom bracket and a 140mm fork. The final word A full OCLV Mountain Carbon frame and FOX Factory shock give you a major head start on a build that will be the envy of all other trail bikes. Fuel EX C is a frameset that excels in all-mountain riding, and it's the best all-around option for riders who want a single versatile, high-performance ride that rips it up on every trail. Why you'll love it - A full OCLV Mountain Carbon frame makes for a ride that's light on the climbs and trail-tough on rough descents - RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control - This bike is perfect for shredding singletrack, hitting drops, and pushing your limits in multi-stage and marathon events - A sleek internal storage compartment gives you a versatile spot to stow tools and gear - We expanded our size range from XS through XL to ensure a better fit for all riders

All-out speed has always been the Demo target, and with the Demo Race it's no different. The frame introduces a new flexible wheel size design that allows riders to take advantage of a 29-inch front wheel and a 27.5-inch rear wheel. This special blend has long been tested by our sponsored riders looking for the perfect balance of traction and maneuverability, but only just green-lighted by the UCI this past year (not that it stopped the Demo Race from racking up both the Downhill World Championship and overall World Cup titles in its very first season). Now, we're offering that same winning combination straight out of the box. Of course, the adjustable rear dropouts allow you to change between 27.5 and 29-inch wheel sizes based on terrain and riding style while also adjusting for proper chainstay length and bottom bracket height. Blazing fast on tough tracks, the Demo Race suspension design has been developed around a more rearward axle path that reduces rear wheel hangup, increasing speed. Top-shelf suspension from RockShox takes advantage of the most proven suspension kinematics on the World Cup circuit and SRAM DH-specific XO1 drivetrain has you covered from the start gate to the finish line. - Not that it needs an introduction, the RockShox BoXXer Ultimate 29 comes from a long lineage of World Cup domination, and its latest guise features RockShox's Charger 2.1 Damper, DH DebonAir spring, and 200-millimeters of podium-bred travel. - The Demo Race M5 alloy frame is fully optimized to take advantage of the traction benefits of a 29-inch front wheel and the increased maneuverability of a 27.5-inch rear wheel. And, it retains the ability to change your rear wheel size to suit different terrain and riding styles—the adjustable rear end ensures chainstay length and bottom bracket height stay dialed no matter the hoop size. - The Rockshox Super Deluxe Ultimate DH coil shock may be heavy on adjectives, but it's even heavier on performance, offering external low-speed compression and rebound adjustment while the Trunnion mount offers extra bushing overlap for increased durability.

Session AL 27.5 frameset is a burly alloy downhill mountain bike frame that's equally at home between the tape and at the DH park. It's built for 27.5-inch wheels, with 210mm of travel and a FOX Performance VAN shock tuned by Trek Suspension Lab. It's right for you if... You're looking to build a rugged DH or park bike for the biggest trails out there, and want a 27.5-inch optimized frameset with exclusive trail tech, like adjustable Mino Link geometry, that can't be found anywhere else. The tech you get A burly Alpha Platinum Aluminum frame, an adjustable FOX Performance shock with 210mm of travel, integrated frame protection, FSA Orbit headset, and exclusive trail tech like ABP, Full Floater, and Mino Link. Built for 27.5-inch wheels. The final word This burly frameset is perfectly capable of taking on the roughest, fastest descents you can find, and it's equally at home in the park, too. The best DH frame tech, a stable geometry, and a quality shock give you a head start on your dream downhill rig. Why you'll love it 1 - Session has the heart of a monster truck: it rolls over everything, gives you the confidence to take on rougher trails, and saves you when you don't take the right line 2 - Quality FOX Performance suspension and our ABP frame design keep you in control 3 - Race or get rowdy? This bike does both 4 - 27.5 wheels are great for flicking the bike around through the most technical trail

Farley EX C Frameset is a full suspension carbon fat bike frame for mountain bikers who want a premium experience in every season. This lightweight OCLV Mountain Carbon frame is the perfect platform for a four-season shred sled. It's right for you if... You already love the fat bike scene, and may even already own a hardtail fat bike, but now you're pushing all your chips in to get the most capable fat bike frame we offer. The tech you get A lightweight OCLV Mountain Carbon main frame with trail-tough alloy stays, 120mm of travel with a FOX Performance Float EVOL shock, FSA headset. Built for PF121 bottom bracket and 27.5-inch or 26-inch wheels, with a maximum tire width of 3.8-inch on 27.5-inch wheels and 4.5-inch on 26-inch wheels. The final word Farley EX C is a carbon fat bike frameset with a do-anything attitude and the performance to back it up. Warning: don't stand too close to this bike, because it can (and will) plow over whatever gets between it and a good time. Why you'll love it 1 - This full suspension fat bike can take you to the best places in every season 2 - The stability and traction of super wide tires make you a more confident rider on any trail 3 - It's a four-season freedom machine that lets you ride outside all year long

Procaliber AL Frameset is a race-worthy cross country mountain bike with the unique advantage of IsoSpeed, a decoupler at the top tube/seat tube junction that provides additional compliance on rough trails. This Alpha Platinum Aluminum frameset is a wallet-friendly start to a lightweight XC build for your fastest singletrack rides ever. It's right for you if... You like to go fast, and also love the idea of a hardtail with frame tech designed to take the edge off rough singletrack. Speed is your main consideration, but comfort is right up there, too. The tech you get A lightweight Alpha Platinum Aluminum frame with IsoSpeed, a tapered head tube, and internal derailleur routing. Procaliber AL Frameset includes a headset and is designed for a PF92 bottom bracket, post-mount disc brakes, and Boost148 wheels. The final word Procaliber AL is a lightweight aluminum mountain bike frameset built in Trek's trail heritage. It's fast, responsive, and it comes in at a great value, but the biggest advantage is the trail-smoothing IsoSpeed decoupler, which takes the edge off fatiguing bumps in the trail so you can stay stronger longer. Why you'll love it - The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter - Internal cable routing extends the life of your cables and adds to the bike's sleek look - This Alpha Platinum Aluminum frame is race-light and trail-tough Wheel size: Sizes X-Small–Small: 27.5-inch Sizes Medium–XX-Large: 29-inch

Supercaliber Frameset is built with light-yet-tough OCLV Mountain Carbon and our exclusive IsoStrut integrated shock for a cross country race bike that's insanely fast and capable. Pair it with a 100mm fork and your favorite parts spec for a field-leading build that'll crush even the toughest courses. It's right for you if... You’re looking to build up a super light and capable cross country race bike. You know you want the efficient yet plush ride our IsoStrut shock provides, but you want to spec the rest with parts you've hand-picked to suit your preference. The tech you get An ultra-lightweight, full OCLV Mountain Carbon frame with 60mm of travel and Trek's exclusive IsoStrut Fox Performance shock designed specifically for Supercaliber. Plus, Control Freak internal routing and a Knock Block headset. The final word Supercaliber Frameset lets you build up a pro-level cross country race bike just the way you like it. The OCLV Mountain Carbon frame is lightweight and strong, and comes with our exclusive IsoStrut shock for efficient capability. Why you'll love it - Supercaliber is a World Cup-worthy bike that’s quick, capable of soaring through techy terrain, and nearly as light as a hardtail - Our exclusive IsoStrut shock provides tuneable, damped suspension for a smooth and efficient ride - Pivotless seat stays save on weight and actively bend to help soak up trail chatter

The Big Fat Dummy is a long tail cargo bike that took a few too many doses of growth hormones. At first glance, you might say that Surly just put bigger tires on a Big Dummy. But if you said that, you'd actually be very wrong so just… don't. Think of Big Fat Dummy as more of a second or third cousin to Big Dummy rather than a brother. They share some of the same DNA and look sort of similar, but they're two very different bikes and really only interact when they both reach for the potato salad spoon at that family reunion that no one really wants to be at anyway. Now that that's out of the way, let's get down to the nitty gritty of what makes this hulking beast of a bike tick. Surly's goal with designing a cargo bike around fat tires was to create the most stable, stiff, and traction-laden ride possible while hauling a ton of stuff. Big Fat Dummy has a longer toptube and slacker headtube than its more svelt cousin giving it a nice, predictable, and stable ride. They also used thinner, lighter tubing to construct its cargo area so while it's an overall burlier bike, there's not much difference in weight. Big Fat Dummy accepts either 10mm or 12mm axles in the rear with a spacing of 190/197mm. That big ol' spacing equates to one thing: tire clearance for days. Big Fat Dummy maxes out at a massive 26 x 5.25" tire.* While that large of a tire provides the most traction and stability a bike can possibly offer, it's also a lot of rubber to push and might not be for everybody. Luckily, Big Fat Dummy is also a blast to ride with 3" tires too. It uses the same 100mm suspension-corrected fork as the Wednesday, meaning if you want to add a little squishy squishy to your ride, you can throw a Bluto on and let ‘er rip. If you intend to carry a passenger on your Big Fat Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. All Big Fat Dummy framesets and bikes ship with a Dummy deck, rails, bags, and the aforementioned Dummy Rail Collars so you can immediately start hauling cargo — human or otherwise. Big Fat Dummy is ready and willing to carry all sorts of crap — literally. It's already in use on an organic farm in Ecuador so it's likely that it's hauled some form of manure by now. *Using a 26 x 5.25" tire will cause some drivetrain limitations.

All of you die-hard alloy fans can rejoice. Yes, the new Stumpjumper ST comes in an alloy version, and it may be the most radically designed alloy bike ever made. And with new tube shapes and an asymmetrical design, the Stumpjumper ST Alloy 29 is sure to exceed your expectations of how a trail bike should ride. Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialing-in the materials and shapes. We continued down the suspension path with a custom Rx Trail Tune on both the fork and rear shock. Suspension performance is highly dependent on frame, wheel, and rider size, so we use our Rx Tune to get each bike to land in the middle of the adjustment spectrum, and this gives you the biggest possible range to fine-tune your ride. Another focal point of the tune was matching the suspension characteristics between wheel sizes—we developed a specific Rx Tune for each platform. So, no matter what wheel size you prefer, you'll get perfectly linear suspension. Steps were also taken to make this bike easy to live with. Threaded bottom brackets make a triumphant return, and we made room for up to a 3.0" tire. You're also free to run whatever aftermarket rear shock you want since we're using standard metric shocks. And customization is furthered with a Flip Chip that lets you to dial-in your Stumpy to your riding style. Switch it from High to Low and it drops your bottom bracket 6mm and slackens the head tube by half-a-degree. Little details also jump out to surprise you, like a newly designed ribbed chainstay protector that makes chain slap a thing of the past and nearly silences the drivetrain. The build here is no-nonsense with a focus on dependable, high-performing parts, like Shimano SLX front and rear derailleurs, Tektro Gemini disc brakes, a FOX FLOAT Rhythm 34 fork with 130mm of travel, a FOX FLOAT DPS Performance rear shock with 120mm of travel, and wide alloy wheels. - The all-new alloy Stumpjumper ST frame features an M5 alloy front- and rear-end, an asymmetrical design, and our 29 Trail Geometry, so it's both capable and comfortable. - The FOX DPS Performance rear shock features our Rx Trail Tune, ensuring that no matter the frame or wheel size, your bike is dialed-in perfectly. - A FOX 34 Rhythm fork handles suspension duties up front with stiff stanchions and plenty of adjustability.

While the rest of the industry was mucking about with 29" DH bike prototypes for professional mountain bike racers, we brought the party to the people with our first production 29er downhill bike. The Session C 29 frameset pairs fast-rolling 29er performance and our proven downhill frame technology. It's long, stable, and aggressive, with a geometry dialed for your fastest runs ever. It's Right for You If... You need speed. You live for it. You dream about it. And, when you're on the mountain, you're gonna get after it. You want faster-rolling 29" wheels, a carbon frame, and the latest DH tech out there. The Tech You Get Session 29 is built with ultra-light and ultra-durable OCLV Mountain Carbon, 190mm rear travel with a RockShox Super Deluxe Ultimate DH shock, Carbon Armor, and integrated frame protection like built-in bumpers for a double-crown fork. Plus, it has frame tech that lets you dial your geometry, like Mino Link and the included fixed-angle headset cups. The Final Word This is the fastest downhill bike we make. This 29er-optimized carbon ride is great for rolling over the rough stuff and getting to the finish line with plenty of time to spare. - Rear suspension: RockShox Super Deluxe Ultimate DH, 225x70mm - Weight: M - 3.24 kg / 7.14 lbs - This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg)

Going down? World Cup champion Session is built to win. An all-new OCLV Carbon frame, updated geometry, advanced air shock, and a stiffer chassis make this downhill race bike faster than ever. Session is the DH bike that excels on downhill's most brutal courses. Take on any terrain with our most advanced suspension and a geometry that can be dialed for every race. Key features: - Longer, more aggressive geometry keeps you attacking the whole way down - OCLV Mountain Carbon with Carbon Armor is downhill tough - Fine-tune your ride with Mino Link and an all-new adjustable headset system - Fast 27.5" wheels get you down the mountain first

The Big Fat Dummy is a long tail cargo bike that took a few too many doses of growth hormones. At first glance, you might say that Surly just put bigger tires on a Big Dummy. But if you said that, you'd actually be very wrong so just… don't. Think of Big Fat Dummy as more of a second or third cousin to Big Dummy rather than a brother. They share some of the same DNA and look sort of similar, but they're two very different bikes and really only interact when they both reach for the potato salad spoon at that family reunion that no one really wants to be at anyway. Now that that's out of the way, let's get down to the nitty gritty of what makes this hulking beast of a bike tick. Surly's goal with designing a cargo bike around fat tires was to create the most stable, stiff, and traction-laden ride possible while hauling a ton of stuff. Big Fat Dummy has a longer toptube and slacker headtube than its more svelt cousin giving it a nice, predictable, and stable ride. They also used thinner, lighter tubing to construct its cargo area so while it's an overall burlier bike, there's not much difference in weight. Big Fat Dummy accepts either 10mm or 12mm axles in the rear with a spacing of 190/197mm. That big ‘ol spacing equates to one thing: tire clearance for days. Big Fat Dummy maxes out at a massive 26 x 5.25" tire.* While that large of a tire provides the most traction and stability a bike can possibly offer, it's also a lot of rubber to push and might not be for everybody. Luckily, Big Fat Dummy is also a blast to ride with 3" tires too. It uses the same 100mm suspension-corrected fork as the Wednesday, meaning if you want to add a little squishy-squishy to your ride, you can throw a Bluto on and let ‘er rip. If you intend to carry a passenger on your Big Fat Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. All Big Fat Dummy framesets and bikes ship with a Dummy deck, rails, bags, and the aforementioned Dummy Rail Collars so you can immediately start hauling cargo — human or otherwise. Big Fat Dummy is ready and willing to carry all sorts of crap — literally. It's already in use on an organic farm in Ecuador so it's likely that it's hauled some form of manure by now. *Using a 26 x 5.25" tire will cause some drivetrain limitations. For all the nuts and bolts of compatibility read Surly's blog on the subject.