Mountain Frames

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)

The Cassidy Alloy Frame gives you the confidence to seek out the steepest, most technical trails out there. Its stiff and durable aluminum frame stands up to trail punishment, whether you're enjoying a full day of shuttle runs, barreling through rugged rock gardens, or hitting drops and gaps. 165 mm of Split Pivot rear suspension offers progressive travel for the stoutest trails, with superior pedaling efficiency and consistent braking traction to boot. Build it up and go big.

Stache Carbon frameset is the perfect performance upgrade for fun-loving shredders who appreciate the confidence and stability of the 29+ mid-fat platform. Super-short chainstays, horizontal sliding dropouts, and our OCLV Mountain Carbon technology make this frame the fastest way to more fun on the trail. Features: 29+ - 29+ is a wider 3" tire that grips relentlessly while floating over terrain. Yet it delivers all the 29er benefits you know and love, like greater momentum and improved rollover. OCLV Mountain Carbon - Trek's mountain-specific carbon fiber is tougher carbon, with unique materials and layup procedures, Trek's advanced engineering, and a higher standard of testing.

Procaliber frameset is a race-worthy carbon cross country mountain bike frame that's light, fast, and built to win. It has the unique advantage of IsoSpeed, a decoupler at the top tube/seat tube junction that gives you more compliance on rough trails for a smoother, faster ride. It's right for you if... In group trail rides and XC races, you lead the pack. You're looking for the performance edge that comes with a lightweight carbon frameset with exclusive IsoSpeed technology that smooths out trail chatter so you can stay stronger longer. The tech you get A lightweight OCLV Mountain Carbon frame with IsoSpeed, a tapered head tube, and internal control routing that's super easy to use. Procaliber frameset includes a Knock Block headset, and is designed for a 100mm fork, up to 2.4" wide tires and 1x drivetrains with up to a 36-tooth chain ring. Built for a PF92 bottom bracket, post-mount disc brakes, and Boost148 wheels. The final word A lightweight carbon mountain bike frameset built to perform in XC races and blazing fast group rides. It's nimble, quick on climbs, and responsive in and out of corners. Best of all, it delivers a massive advantage in speed and comfort with the trail-smoothing IsoSpeed decoupler. Why you'll love it - OCLV Mountain Carbon is race-light and trail-strong - The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter - New internal control routing is super easy to use thanks to built-in channels that guide your hose or housing easily through the frame - You get a Straight Shot downtube for extra-stiff, responsive handling without added weight, and a Knock Block headset that protects against spinning bars and fork crowns

For fast XC riders and cross country mountain bike racers who want to cover a lot of ground fast, there's no better hardtail frameset than Procaliber SL. It's built with Super Light OCLV Mountain Carbon and delivers the unique trail-smoothing advantage of IsoSpeed, which takes the edge off fatiguing bumps in the trail so you can stay stronger longer. It's right for you if... You want to fly up climbs, rail the corners, charge through technical sections of trail, and win every sprint to the line. You have a dream XC build in mind, and you want to start with the lightest carbon hardtail frame we offer. The tech you get A superlight SL OCLV Mountain Carbon frame with Control Freak internal cable routing and trail-smoothing IsoSpeed. The Procaliber SL frameset includes a headset, and is designed for post-mount disc brakes and a PF92 bottom bracket. The final word Smoother. Lighter. Faster. Procaliber SL was built to win the XC game. The ultra-lightweight SL OCLV Mountain Carbon frame with IsoSpeed delivers serious performance for serious riders. Why you'll love it - This SL OCLV Mountain Carbon frameset is the ideal start to an obscenely lightweight cross country build - The IsoSpeed decoupler makes it ride smoother than any other hardtail, so your body doesn't get beat up by trail chatter - Control Freak Cable Management allows you to run any combination of cables exactly the way you want, while still giving you sleek looks and protecting your cables against unnecessary wear - Boost148 spacing on all frame sizes except S, which has a 142x12mm rear axle

We know you have a "dream build" list hidden away somewhere. Now’s the time to bring it to life on the Blackthorn Aluminum frame. This versatile all-mountain bike frame comes with a RockShox Super Deluxe Select + shock for 140mm of rear travel. Our tried-and-true Split Pivot suspension design offers a supple, supportive ride with incredible pedaling efficiency so you can take on a huge variety of trails. Start with the best all-mountain bike frame out there, hang your favorite components on it, and let it rip.

Ticket S is a slopestyle mountain bike frame built for big tricks, big jumps, and a whole lot of style. Lightweight Alpha Platinum Aluminum and 100mm of rear travel with a FOX shock make it both durable and agile. It's the frame of choice for Trek C3 Project riders, and for good reason: they've built it over years of refinement and collaboration with our designers. It's right for you if... You want to hit jumps like the Trek C3 Project riders. You've got an appetite for the tricky stuff and want a flickable ride that's forgiving enough for hard landings. The tech you get Durable yet lightweight Alpha Platinum Aluminum with Mino Link adjustable geometry, 100mm of rear travel with a FOX Performance Flat SV shock to soak up big landings, and features inspired by Trek C3 Project riders like water bottle bosses on the down tube for shifter mounts and a bottom bracket bolt to keep the crank from spinning while you're in the air. The final word Get it if you want a slopestyle whip you can throw around on big jumps. It's at home in the air, and built in collaboration with the best slopestyle riders in the world: the Trek C3 Project. Why you'll love it - This bike has won every major slopestyle comp, several times over - Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride - A tapered headtube, pressfit bottom bracket, and 142x12mm rear dropouts are ready for your dream build

Roscoe frameset gives you a solid starting point for an awesome hardtail trail build. The light and sturdy alloy frame is made for a 140-150mm fork, 29er wheels and wide tires. Spec it for however you’ll ride it, whether you're planning on getting down or catching air. - Fits up to 2.6" tires for a grippy, confident, and fast-rolling ride - Add a dropper post for more stability and control on rugged descents - Long, low, and slack - Roscoe's trail bike geometry gives you confidence for rugged descents.

Remedy AL is a burly trail frameset built for rough trails, big hits, and wild all-mountain rides. It's designed for 27.5" wheels and riders who like to party on the descents. A super-stiff downtube with proven tech like ABP, plus 150mm of rear travel with a RockShox Super Deluxe shock make this frame ready for a build that suits your style. It's right for you if... You're building a custom all-mountain bike for getting a little wild and blasting sketchy lines. You love leaving the ground and you're looking for a ride you can whip around on the rowdiest trails. The tech you get An Alpha Platinum Aluminum frame with 150mm of rear travel and a RockShox Super Deluxe shock, plus a Straight Shot down tube and Knock Block headset with a Bontrager Line 35mm stem. Mino Link adjustable geometry and Control Freak cable routing for a dialed build. Made for 27.5" wheels. The final word A stout trail frame that's fun to ride on the roughest trails, and most at home on the biggest all-mountain rides. A piggyback shock that can keep up with the longest descents and dialed frame details give you a head start on your custom build. Why you'll love it - You get a solid base for building a bike that can keep up on your wildest adventures - Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride - Wider is more stable: Remedy has clearance for up to 27.5x2.8" tires - Control Freak cable routing lets you run any set-up, like a right-front brake, internally-routed dropper, or electronic shifting

Remedy AL is a burly trail frameset built for rough trails, big hits, and wild all-mountain rides. It's designed for 27.5" wheels and riders who like to party on the descents. A super-stiff downtube with proven tech like ABP, plus 150mm of rear travel with a RockShox Super Deluxe Select+ shock make this frame ready for a build that suits your style. It's right for you if... You're building a custom all-mountain bike for getting a little wild and blasting sketchy lines. You love leaving the ground and you're looking for a ride you can whip around on the rowdiest trails. The tech you get An Alpha Platinum Aluminum frame with 150mm of rear travel and a FOX Performance Elite Float X shock, plus a Straight Shot down tube and Knock Block headset with a Bontrager Line 35mm stem. Mino Link adjustable geometry and Control Freak cable routing for a dialed build. Made for 27.5" wheels. The final word A stout trail frame that's fun to ride on the roughest trails, and most at home on the biggest all-mountain rides. A piggyback shock that can keep up with the longest descents and dialed frame details give you a head start on your custom build. Why you'll love it - You get a solid base for building a bike that can keep up on your wildest adventures - Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride - Wider is more stable: Remedy has clearance for up to 27.5x2.8" tires - Control Freak cable routing lets you run any set-up, like a right-front brake, internally-routed dropper, or electronic shifting - You'll fade before the FOX Performance Elite Float X shock does—it's built to help you squeeze the most out of long, gnarly descents

Session C 27.5 frameset is an agile carbon DH mountain bike that's built for tearing up the biggest descents. Strong and light OCLV Mountain Carbon tubes, 190mm of travel with a FOX Factory shock, and the best frame tech make it the perfect platform for downhill speed. It's right for you if... You seek out the steepest descents, the fastest lines, and the biggest jumps. You're looking for a fast, agile, light DH ride with a high-quality shock and the best frame tech for ridiculous speed in downhill races. The tech you get A strong and light full OCLV Mountain Carbon frame, 190mm of travel with an adjustable FOX Factory Float X2 shock tuned by Trek Suspension Lab, Carbon Armor frame protection, and adjustable fixed-angle FSA Orbit headset, and exclusive trail tech like ABP and Mino Link. Built for 27.5? wheels. The final word This light and nimble bike is built for speed and agility on the biggest, roughest downhill runs. Why you'll love it - 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 - OCLV Mountain Carbon is light and strong, even on the wildest runs - Race or get rowdy? This bike does both - 27.5 wheels are great for flicking the bike around through the most technical trail - Mino Link and fixed-angle headset cups let you adjust your geometry for the exact handling you want

The Timberjack Ti absolutely owns all paths — wooded, skinny, and flowy, making you the master of every ride thanks to its multi-talented character. The frame is constructed from custom, top-shelf titanium with a fast-handling geometry to deliver the stiffness needed to whip through tight turns and accelerate with instant power, while super-short chainstays make it easy to lift over obstacles so you can stay with the flow. Run it as a 27.5+ with up to 3-inch tires for maximum fun, or go for efficiency with a 29er wheelset — with Salsa's Alternator Dropouts you get an impressive grip of wheelset and drivetrain options to suit your style and intention.

Stache AL Frameset is built with our lightweight and trail-tough Alpha Platinum Aluminum. This trail hardtail frameset is designed for fun-loving 29+ tires, with massive tire clearance, an elevated midstay, and Stranglehold Dropouts that make it easy to fine-tune your geometry or turn it into a singlespeed mountain bike. It's right for you if... Your attitude is that mountain biking should be, above all else, a ridiculous amount of fun. You want a base for your build that matches your fun-loving approach to the trail, with the versatility to run a full drivetrain or a singlespeed setup. The tech you get A trail-tough Alpha Platinum Aluminum frameset with super-short chainstays that give you the ability to pop off jumps and toss the bike around corners. Stache AL Frameset includes Stranglehold Dropouts so you can fine-tune your geometry or run singlespeed. It has internal derailleur and dropper post routing, a PF92 bottom bracket, a headset, and is designed for disc brakes and Boost148 29+ wheels. The final word Stache AL Frameset is the first step to more fun on the trail. The short chainstays deliver a lively ride and quick acceleration. Build it up with 29+ mid-fat tires for relentless traction. Why you'll love it - Stache is super versatile and equally at home on multi-day bikepacking trips as it is on rough singletrack - The super-short chainstays make it really easy to show off your wheelie skills - We're not the only ones who love it: DirtRag says, "[Stache] is the most fun bike I rode this year, and fun is where it's at." Features: Advanced frame tech - Stache is surprisingly nimble thanks to extra-short 420mm chainstays. The elevated mid-stay makes room for the extra-big tires while Stranglehold dropouts allow you to fine-tune your wheelbase length. 29+ - 29+ is a wider 3" tire that grips relentlessly while floating over terrain. Yet it delivers all the 29er benefits you know and love, like greater momentum and improved rollover.

The Ogre can get you to your job during the week, then way out of town on the weekend. It’s not sluggish on pavement or gravel and can also hold its own on singletrack. Ogre brings several sensible features to the 29er platform, including horizontal slotted dropouts with Gnot-Boost spacing, a tweaked non-suspension corrected geometry, and a beefy tire clearance. - 100% Surly Chromoly steel, double-butted main triangle - TIG-welded, Horizontal slotted with derailleur hanger, Gnot-Boost spacing allows the use of 135mm QR hub, 142 x 12mm thru-axle or 148 x 12mm Boost hubs. Features Rohloff torque arm slot and threaded eyelets for fenders, racks and Surly trailer mounts - Full-length Surly Trip Guide housing line guides for derailleurs and brakes; two sets of bottle cage mounts; upper seatstay threaded barrels, mid- and low-blade fully threaded through-blade fork eyelets; threaded holes for racks, fenders and trailer mounting nuts; Rohloff OEM2 axle plate mounting slot - Disc brakes only. Disc mounts are 51mm IS. Note: rear disc brake is limited to 160mm maximum rotor diameter and requires the use of Surly caliper adaptor (included with frames and bikes) - Frame is E.D. coated for increased life expectancy - Tire clearance for 29 x 2.5" or 27.5 x 3"

As the first "plus" bike to hit the market, Krampus changed the way many people approach trail riding. It's shown people the light of how high-volume, large-diameter tires can vastly improve the ride experience. It's also done a bang-up job dispelling the myth that big tires make you slow. Krampus is kind of like the opposite of a mullet: long in the front and short in the rear. With a long toptube and compact chainstays, it takes trail-shredding abilities to the next level. A mullet may be business in the front, party in the back but Krampus makes partying its business. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension-corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29 x 3" tires

Karate Monkey is a highly versatile trail bike that plays the part of 29er and 27.5+ equally well. Karate Monkey delivers a resilient, lively ride on all sorts of gnarly terrain. Its frame is a highly-versatile canvas for whatever dirty masterpiece your brain cooks up. According to our computing machine (Thor) it can be set up in approximately 487 different configurations. Originally designed as a 29er (and the frame that helped spark the 29" wheel movement), the latest Karate Monkey is designed to perform just as admirably as a 27.5+ rig as well. This allows you to pick your poison — provided your poison is having a really great time while permanently donning a huge grin, of course. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29" x 2.5" or 27.5" x 3" tires

Fuel EX AL Frameset is an aluminum trail frameset that's only limit is your imagination. It features progressive trail geometry that stretches out the front end for more confidence on descents, while keeping you perched in the back for punchy climbs. Its 140mm of rear travel makes light work of tech trails and jump lines, and is ready for your dream build. You want an affordable and capable full-suspension frame to build up however you want. You crave the versatility of a bike that can handle rowdy descents, and turn around and pedal back to the top for more. A lightweight aluminum frame with internal routing to protect your cables and simplify setup. A FOX Performance Float X rear shock that makes quick work of small bumps, and smooths out gnarly descents. Adjustable geometry that allows you to take control of your headtube and seatube angle. Fuel EX AL Frameset brings forward the tech we've seen in its carbon counterpart to an alloy model that's more economical, but just as ready to slay. Its modern trail geometry is built to handle any terrain, and its packed with new features to the alloy model, like in-frame storage, and adjustable geometry. - You get a light and reliable alloy frame that's only build limitation is your imagination - It features modern geometry that's ready for steep and loose descents, and hammering up climbs - With the adjustable angle headset (angled cups sold separately) and Mino Link, you can choose from six different geometry configurations - You'll have all the space you need for your treats and tools with new in-frame storage Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Small – X-Large: 29-inch

Fuel EX C Frameset is a light and ready frameset that's only limit is your imagination. It's constructed from lightweight, vibration-damping carbon fiber for a ride that's stiff where you want it and compliant where you don't. Its engineered for the trail with progressive geometry that stretches out the front-end for more control on descents, and gets steeper in the rear for better pedaling efficiency. You want a carbon frame that you can build up however you dream. You care about having the most progressive geometry that can handle anything on the mountain, and want to keep things lightweight. A premium carbon frame that damps vibrations and is ready to take on any trail. Internal cable routing to protect hoses and simplify setup. A FOX Performance Float X rear shock that makes quick work of small bumps, and smooths out gnarly descents. Adjustable geometry that lets you control your headtube and seatube angle. Fuel EX C Frameset is a lightweight carbon ride that's evolved for the trail. Its modern trail geometry keeps descending confident and climbing lively. In-frame storage lets you keep your tools tucked away on the trail, and adjustable geometry gives you total control of the ride. - You get a high-end carbon frame that's light and lively on the trail, and can be built up with all of your favorite components - It features modern geometry that's ready for steep and loose descents, and hammering up climbs - With the adjustable angle headset (angled cups sold separately) and Mino Link, you can choose from six different geometry configurations - You'll have all the space you need for your treats and tools with new in-frame storage Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Small – X-Large: 29-inch

Remedy C is a tough full carbon all-mountain frame that's burly enough for the roughest lines, and light enough to make that next climb seem a little shorter. This stout trail bike frame has 150mm of travel and a FOX DPX2 shock that keeps up on long, bone-rattling descents without giving up pedaling support. - "Wait for me," said no Remedy rider ever. This bike has a lot of travel, but it's also extremely quick on the flats and climbs - You’ll fade before the FOX DPX2 shock does—it's built to help you squeeze the most out of long, gnarly descents - Mino Link lets you make small adjustments to your geometry quickly and easily, even mid-ride - Wider is more stable: Remedy has clearance for up to 27.5x2.8 tires - Control Freak cable routing lets you run any set-up, like a right-front brake, internally-routed dropper, or electronic shifting

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. - 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 tunable, damped suspension for a smooth and efficient ride - Pivotless seat stays save on weight and actively bend to help soak up trail chatter

Slash AL Frameset is the perfect platform for a fast 29er enduro or trail bike build. With a burly Alpha Aluminum frame, Trek's exclusive RE:aktiv shock, and a Knock Block 2.0 integrated headset, you have all the bones for a mountain bike that can handle everything from the biggest all-mountain descents to the most competitive enduro races. - It's equally at home between the tape and in the rugged wild—Yes, Slash is a race bike, but it's ridiculously fun on gnarly trail rides, too - A large internal storage compartment in the down tube lets you stow tools and gear - Mino Link lets you adjust the geometry, so you get both an enduro race bike and an ultra-capable trail bike in one - New, removable Knock Block has a bigger steering angle to keep cables and hoses safe without sacrificing turning radius

Farley AL is a high-value platform for your fat bike build. This lightweight Alpha Platinum Aluminum fat bike frameset has the ride characteristics of a traditional trail bike, with all the monster truck capability that comes with fat bike tires. Plus, you get tons of mounts for adding accessories like racks, fenders, and gear cages. - All the mounts make it easy to add accessories and customize Farley for how you want to roam. - It's a four-season freedom machine that lets you ride outside all year long. - You can run your choice of wheels with 26x5" or 27.5x4" tires.

Session AL frameset gives you an awesome foundation for building up your ideal downhill machine. The new high-pivot suspension design keeps you nimble, planted, and blazing fast on even the most punishing runs, and burly alloy construction rolls with the punches on gnarly and technical trails. - New suspension layout with a high pivot and idler pulley increases traction, carries more speed, and reduces pedal kickback for more stability - Virtually zero pedal kickback means you’ll stay confidently planted and in control during descents—especially when landing jumps or drops - The high pivot design delivers a more efficient rearward axle path so you’ll carry more speed and your wheel won’t get hung up on obstacles - Adjust your suspension progression by flipping the lower shock mount chip—20% for plush park rides, 25% for racing efficiency - Our new DH sizing system is based on reach, not rider height, which is the most important factor in a great downhill bike fit

Fuel EX C is the ideal start for a dream trail bike with a full OCLV Mountain Carbon frame that has 130mm of rear travel with a Fox Factory RE:aktiv Thru Shaft shock. Build it up light and fast or make it a beefy bruiser that's ready for some extra chunk. It's up to you. It's right for you if... You're after your own version of a holy grail mountain bike build. You know how you want to ride, and you know which parts you need to do it. You want the best all-around trail bike frame we offer, because you know that a great build starts with a great frame. The tech you get A full OCLV Mountain carbon frame with internal storage, 130mm of travel and Mino Link adjustable geometry, a FOX Factory Float shock with Trek's efficient RE:aktiv with Thru Shaft damper, and an included Bontrager Line Pro 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. 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 Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Small – XX-Large: 29-inch

As the first "plus" bike to hit the market, Krampus changed the way many people approach trail riding. It's shown people the light of how high-volume, large-diameter tires can vastly improve the ride experience. It's also done a bang-up job dispelling the myth that big tires make you slow. Krampus is kind of like the opposite of a mullet: long in the front and short in the rear. With a long toptube and compact chainstays, it takes trail-shredding abilities to the next level. A mullet may be business in the front, party in the back but Krampus makes partying its business. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension-corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29 x 3" tires

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. "Any day of the week's a great day to ride a Wednesday." - 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

Nobody knows what you like as well as you do. When you're hurtling down the trail at high speed, everything needs to be dialed. With 165mm of rear travel, plus our Split Pivot suspension system for pedaling efficiency and consistent braking traction, Cassidy is easy-up, easy-down. Take the Cassidy Carbon Frame, hand-select your dream team of parts, and build the enduro sled you've always wanted.

The Horsethief Carbon Frameset is where your dream trail bike begins. The Horsethief frameset can be built with either 29-inch or 27.5-plus wheels, and the flip chip allows for subtle geometry tweaks. The Split Pivot rear suspension technology and 120mm Fox Float DPS Performance Elite shock are a recipe for incredible small bump compliance and traction. With this solid foundation in place, just add the parts that make you happy—we can’t wait to see what you do with it.

Given the choice between clearing challenging lines and taking them on with gusto, you prefer the latter. If this sounds like you, the Rustler Carbon frame is the perfect platform for your ultimate trail bike build. The Split Pivot rear suspension system with a Fox Float DPS Performance shock, flip chip geometry adjustment, and 27.5 x 2.3–2.8-inch tire clearance let you build the bike that suits your playful style. Get excited for a trail-roosting rig with impeccable pedaling efficiency—a surefire recipe for fun on many trails.

Spearfish was designed under a simple premise: that efficiency and precision result in speed. Whether pursuing an ultra-endurance record or working to keep the hard chargers off your back on local training laps, Spearfish’s efficient Split Pivot suspension design rewards the rider. The lightweight carbon frame and 100mm Fox Float DPS Performance Elite shock provide a platform for the ultimate progressive XC bike. Eliminate excuses with Spearfish.