Mountain Frames

Techs & Features: Advanced SL Composite Technology Professional Grade raw carbon fiber is woven in our composite factory to produce our lightest, stiffest, and highest-quality frames. This is the technology used by Giant’s pro racers in almost every cycling discipline. OverDrive Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4" lower and 1 1/8" upper for road, 1 1/2" lower and 1 1/8" upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.

The frame of the P-29er is built with Ritchey’s proprietary triple-butted Logic steel tubing. That combines with its modern XC geometry to deliver a breathtakingly balanced ride – beautifully mixing a snappy and responsive soul with a comfortable and predictable personality. The P-29er is the ultimate cross-country mountain bike. With its pedigree firmly rooted in the decades-deep lineage of its P-series predecessors that helped define the sport of mountain biking, this latest version of the P-29er is very much a modern machine with features demanded by today’s XC riders. It boasts BOOST spacing along with stealthy dropper post routing and an ultralight forged tapered headtube. It fits tires up to 2.3” and is built around a 100mm-travel fork. All of this comes together to enshrine the P-29er as a monument to the spirit of endless singletrack adventure.

If there’s one thing Tom knows, it’s dirt. When he first designed the Ultra he knew it would appeal to riders who demand specific ride characteristics and dirt slaying only he could deliver- and that was in the 1980s! Good design withstands the test of time, and the latest iteration of the Ultra is a prime example. Like its predecessor from 30 years prior, the new Ultra occupies a unique ride space from cross-country riders looking to get rowdy and go big to enduro riders lusting for some all-mountain shredding. Designed around a 120mm travel fork and super stable Boost 148 spacing, most of the fun is in the wheels. Designed to accommodate 29" or 27.5" wheels, the Ultra is highly versatile. Throw on some 29s for some trail-smashing XC riding, or saddle up some 27.5+ for some serious no-holds-barred shredding. The Ultra is a rough and rugged trail master that doesn’t know when to quit. - Compatible with 27.5 x 2.8 and 29 x 2.4 tires - Internal routing for a dropper post - Boost 148x12 rear spacing

Wide open, dawn to dusk. The Highball is our race-bred XC hardtail. When the trail (or the competition) calls for the direct drive efficiency that only a hardtail can offer, the Highball is the choice. It looks straightforward but that belies the high-tech features and design hidden within. This is a modern take on the simple machine that many still choose to put battery acid in their thighs and fire in their lungs in order to conquer something. Whether you’re chasing medals, personal demons, or just some riding buddies, this is a hardtail you’ll be happy to log long hours upon. Hard on the throttle, soft on the body Hardtails are about as subtle as bikes come, and in the case of the Highball, simplistic refinement belies engineering effort. We’ve learned from our road biking pals that a great deal of a hardtail’s compliance comes from the seatpost: the smaller the diameter, the softer the feel, and with more seat post exposed to daylight, more compliance is had— which is the reason the Highball features low slung top tube and the smaller, 27.2mm diameter post. But you need not be sitting to recognize the ‘soft’ feel of the Highball— the dropped seat stays are made of custom laminate, finely tuned here in Santa Cruz for vertical compliance— and they’re oriented to isolate the top tube from high speed trail chatter, reducing feedback to the, uh, engine. SRAM Eagle Transmission - stronger, better shifting, wirelessly The next generation SRAM Eagle Transmission specced on our CC-carbon models is a radically robust, fully integrated and interdependent wireless transmission. Built around the universal constant of the wheel axle itself, the Full Mount hangerless attachment creates a far stronger connection to the frame and the super strong derailleur provides unprecedented strength. Shifting under load is made possible due to a combination of X-SYNC technology and cassette mapping, creating seamless shifts even during your hardest power output. The new AXS Pods are extremely ergonomic and highly customizable, so shifting gears is light and intuitive. It's simply the most advanced transmission and nearly as tough as the mountain itself.

When you can only have one bike, and your mission is to ride it into oblivion, this is the one. From manicured bike parks to blown-out loamy berms, alpine lines to backyard trails, the Bronson feels just as at home in the air as it does in the dirt. For the rider with a Peter Pan disposition or anyone looking to get into a pan-flat tabletop position, the Bronson encourages bad behavior.

Big on wheels, short on fuss, this is the pinnacle of go-anywhere-anytime bikes. A balance of travel, wheel size and attitude makes this a true MTB for modern mountain biking. Whether that includes the rarefied air of the alpine or just local trailheads, built and burly trails or sublime natural singletrack, the Hightower is an all-terrain thriller.

The Downhiller's XC Bike The Tallboy has earned a loyal following amongst those who seek a go-to bike that will hold up to the relentless hammering of power hour rides or riding for all-the-hours. The highly refined VPP™ suspension on the Tallboy combines pedaling efficiency and all-out bump-chomping prowess. If ever there was a gravity riders’ XC bike, the Tallboy is it.

When you can only have one bike, and your mission is to ride that bike into oblivion then this is the one. From manicured bike parks to blown out loamy berms, alpine lines to backyard trails, the Bronson is as at home in the air as it is in the dirt. For the rider with a Peter Pan disposition or who wants to get into a pan flat tabletop position, the Bronson encourages bad behavior.

Big on wheels, short on fuss, this is the pinnacle of go-anywhere-anytime bikes. A balance of travel, wheel size and attitude makes this a true ATB for modern mountain biking. Whether that includes the rarefied air of the alpine or just local trailheads, built and burly trails or sublime natural singletrack, the Hightower is an all-terrain thriller.

THE PRIVATEER'S ULTIMATE ENDURO RACE BIKE Seriously. The Megatower’s big wheels, long-travel and tough carbon fiber chassis delivers the high-speed security traits of a race bike. Yet the relatively steep seat angle and size-specific geo maintain the Mega’s mega pedaling ability, elevating its reputation as the perfect choice for big gravity rides, park laps and enduro racing. Blind confidence on blind terrain VPP™ suspension can be optimized to strike a balance between pedaling efficiency and all-out bump-chomping prowess. The Megatower is exceptional at absorbing the biggest hits so its rider can charge harder, with more confidence, in the very worst terrain. But because it's still pedal efficient, getting up to the best, highest trails isn't a chore like some other bikes. Sensitivity and constant traction The Megatower's low leverage ratio to provide a more damped, controlled feel at speed. Lower anti-squat reduces pedal induced firmness and provides excellent square edge bump absorption, which gives you a greater margin for error when taking blind risks on wild trails. Thought out for privateer racers The Megatower's low leverage ratio to provide a more damped, controlled feel at speed. Lower anti-squat reduces pedal induced firmness and provides excellent square edge bump absorption, which gives you a greater margin for error when taking blind risks on wild trails.

STOMPING GAPS AND STAMPING PASSPORTS Load up the van, hit the road, climb a mountain, hammer it back down, huck the gap, throw the bike back in the van, drive to the bike park and do laps on laps. Hell, you could even rock up to the startline of the world's wildest races. The Nomad’s forte is being ready and willing to go wherever, whenever. The only thing it needs is a rider willing to press send. All the travel anyone needs in a single-crown bike intended for the steepest and deepest of trails. VPP™ suspension can be optimized to strike a balance between pedaling efficiency and all-out bump-chomping prowess. The Nomad is exceptional at absorbing the biggest hits so its rider can charge harder, with more confidence, in the very worst terrain. But because it's still pedal efficient, getting up to the best, highest trails isn't a chore like some other bikes. Sensitivity and constant traction On the Nomad, lowering the anti-squat reduced pedal kickback on big square-edge hits at speed, all while improving the overall sensitivity of the suspension to maintain traction at all speeds. Up and downhill. Flat-out bump control and tracking By reducing the starting leverage of the latest Nomad, we were able to improve body-weight influenced geometry stability throughout the travel. While reducing progression allowed the suspension to have consistently better tracking qualities throughout the stroke. Built to last Short, stout counter-rotating links connect the front and rear triangles to create an extremely robust chassis that reduces lateral flex. Simple expanding collet axles hold things together, pivots run on large diameter axles and bearings (which we offer free lifetime replacement for) and the lower link includes a grease-port for quick, easy maintenance. Frame stiffness tuned by size Bigger riders means bigger stresses on bigger frames. So we tailor stiffness for every size to make sure everyone gets the same ride quality. Details matter The details are completed by a neat mud flap to protect the rear shock plus tidy cable routing within the frame and swingarm, and rubberized DT protectors to shrug off strikes.

As a highly versatile touring bike, the Bridge Club hits the sweet spot that separates on- and off-road excursions. The simplistic design makes it fully adept to handle a full rack and pannier setup, frame bags, or any combination of the two. It doesn’t feel sluggish on paved shortcuts, but can also hold its own on dirt detours. If you’re feeling a little zesty on your next road tour, you won’t be ill-prepared for reroutes through the woods. The Bridge Club is designed to handle it all. - 100% Surly Chromoly frame, main triangle is double-butted; 1-1/8" threadless Chromoly fork - Rack, fender, and four sets of three-pack mounts - Disc brake-specific, single-position vertical rear dropout makes it less intimidating than other bikes in the category - Clearance for 700 x 47mm (with or without fenders) or 27.5 x 2.8" tires (27.5 x 2.6" with fenders)

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

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

Ice Cream Truck solves the problem of having to choose between a fat bike and a trail bike. It boasts a symmetric 190mm-spaced Chromoly frame, suspension-corrected 150mm-spaced fork, and sporty trail-oriented geometry. Supported by massive 4.8" tires, itis ready to deftly tackle nearly any terrain. - 100% Surly Chromoly steel with 44mm headtube and internal dropper post cable routing - Frame is E.D. Coated for increased life expectancy - 1-1/8" straight steerer fork, Chromoly steel - 100mm threaded bottom bracket shell - Front and rear thru-axles, non-off-set - Universal cast dropouts accommodate thru-axle or quick-release standards

The Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out. It’s the bike you turn to when you’re not entirely sure what the night has in store. It’s the bike to grab when you want to have just much fun riding to the trail as you do from the trail itself. Singlespeeding is an integral part of Surly’s DNA, and the Lowside continues the tradition, by taking a simpler approach to trail riding. - 100% Surly 4130 Chromoly frame, main triangle is double-butted; 1-1/8" threadless Chromoly fork - Singlespeed “specific” (derailleur hanger but no Trip Guides) - Dropper post routing - Gnot-Boost rear spacing - Front and rear thru-axle - 26 x 3” or 27.5 x 2.8” tire clearance

Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out. Your BMX Bike All Grown Up Lowside is like the grownup version of the bike you rode when you were a kid and still had hopes and dreams and some semblance of ambition. It's just as happy riding singletrack as it is parked outside your favorite drinking establishment. Lowside is a single speed mountain bike. Singlespeeding has been a part of Surly's DNA since day one when we launched the 1x1 Rat Ride. After a lot of Homie Fall Fests and more feats of strength than we can recall, we decided to discontinue it a couple years back. Lowside picks up right where the 1x1 left off. "Some have dubbed the Lowside the ultimate pub cruiser." - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Spec'd in alternating years with 26 x 3" or 27.5 x 2.8" tires, the Lowside remains capable of running either option

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

The Karate Monkey frame features updated, progressive trail geometry, a new tubeset, and Surly’s Gnot-Boost rear dropout system to support multiple drivetrain and wheel size configurations. - 100% Surly 4130 chromoly steel frame and fork; double-butted main triangle and 44mm headtube - Tubeset uses the same trumpet tubes found on Instigator 2.0 frame - Adjustable rear dropouts with 145mm Gnot-Boost spacing works with 142 x 12, 148 x 12mm, and 135mm w/ 10/12 washer - Internal dropper seatpost routing - 30.9mm seat tube ID - Clearance for 29 x 2.55 or 27.5 x 3 tires

The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset and Surly’s Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size configurations. - 100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube - The tubeset uses the same trumpet tubes found on Instigator 2.0 frame - Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru, as well as 135mm w/ 10/12 washer - Internal dropper seatpost routing with 30.9mm seat tube ID - Clearance for 29 x 2.55 or 27.5 x 3 tires

The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset, and Surly's Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size configurations.

The Krampus is the bike that started it all — the plus-size movement that is. The Krampus features Surly’s Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs. - 100% Surly 4130 CroMoly steel frame and fork; double-butted main triangle and 44mm headtube - New tube-set uses the same trumpet tubes found on 2017 Karate Monkey frame - Gnot-Boost adjustable rear dropouts - Internal dropper seatpost routing - 30.9mm seat tube - Designed to fit up to 29 x 3.0” tires

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 Krampus is the bike that started it all — the plus-size movement that is. Krampus features Surly’s Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs. - 100% Surly 4130 CroMoly steel frame and fork; double-butted main triangle and 44mm headtube - New tube-set uses the same trumpet tubes found on 2017 Karate Monkey frame - Gnot-Boost adjustable rear dropouts - Internal dropper seatpost routing - 30.9mm seat tube - Designed to fit up to 29 x 3.0” tires

Designed to go where no normal fat bike can, the Surly Moonlander is for riders who want otherworldly capabilities on rocky shorelines, sand, snow, and desolate landscapes not yet discovered. It’s the ultimate choice for explorers who itch for the next great adventure, and aren’t afraid of what they might find. - Constructed from 100% Surly Chromoly Steel for excellent durability - Clearance for 24 x 6.25” tires, as well as 26 x 5.1", 27.5 x 4.8", and 29 x 3" - Comes with rack and fender mounts, as well as accessory mounts on both fork blades to enhance cargo capacity - Four frame sizes to fit most riders: SM, MD, LG, XL