Mountain Bikes

Better performance. Better value. Better Rockhopper. By tapping the fit and handling advantages of pairing each rider with their ideal wheel size and suspension that works its hardest for everyone thanks to our size-specific Rx Tune, we've baked in added performance to the Rockhopper without dialing up the price. The reliable and crisp Shimano drivetrain provides a robust 2x9 drivetrain that can handle everything you're throw down while confident braking from Shimano hydraulic disc brakes seals the deal of the century. - A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper’s butted aluminum frame features hydro-formed top and downtubes in order to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing and dropper-post compatibility. - With the goal of making sure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. - Bringing our Rx Tune to Rockhopper for the very first time, the lockout-equipped SR Suntour XCM with custom Multi-Circuit damping brings size-specific travel and spring rates to the show in a performance that’s sure to impress while also ensuring consistent geometry, handling, and suspension performance, regardless of frame or wheel size. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, rims for a wheelset hat-trick: strong, light, and durable.

Ruthless Progression This totally redesigned P.Series gives riders of all sizes a jumping off point to a life on bikes. The lightweight, but tough alloy frame is designed to take all the hits and keep rolling—across all frame and wheel size options. Our approach to these robust bikes centers around delivering a simple, high-quality platform that's versatile for all riders, and packs in category-first features that make a difference to the rider. Starting with the durable lightweight alloy frame, the new P.Series stands up to the demands of dirt jump progression. Its cables are internally routed, adding to its sleek presence and tangle-free riding. • Lightweight, Specialized engineered rigid fork, geo corrected to 80mm of travel makes fork upgrades easy. • 19mm OD handlebars, plus short reach brake levers and grips sized for smaller hands helps young riders stay in control. • Specialized Kicker tires find grip anywhere, street, dirt, or at the skatepark.

The updated Rampage focuses Norco’s two decades of riding and building dirt jumpers into a platform where modern design, engineering, and jump-specific spec come together to push style and adrenaline to the next level. With help from our team rider Matt MacDuff, we’ve made some significant updates. Purpose-built for big air, this bike will literally up your game at the dirt jumps, pump track, or your local skatepark.

Ruthless Progression This totally redesigned P.Series gives riders of all sizes a jumping off point to a life on bikes. The lightweight, but tough alloy frame is designed to take all the hits and keep rolling—across all frame and wheel size options. Our approach to these robust bikes centers around delivering a simple, high-quality platform that's versatile for all riders, and packs in category-first features that make a difference to the rider. Starting with the durable lightweight alloy frame, the new P.Series stands up to the demands of dirt jump progression. Its cables are internally routed, adding to its sleek presence and tangle-free riding. • Specialized P.3, A1 Premium Alloy, 26", fully-butted tubing, dropper post compatible and 27.5" wheel compatible.

Ruthless Progression This totally redesigned P.Series gives riders of all sizes a jumping off point to a life on bikes. The lightweight, but tough alloy frame is designed to take all the hits and keep rolling—across all frame and wheel size options. Our approach to these robust bikes centers around delivering a simple, high-quality platform that's versatile for all riders, and packs in category-first features that make a difference to the rider. Starting with the durable lightweight alloy frame, the new P.Series stands up to the demands of dirt jump progression. Its cables are internally routed, adding to its sleek presence and tangle-free riding. • Specialized P.4, A1 Premium Alloy, 27.5", fully-butted tubing, dropper post compatible and 26" wheel compatible.

The durable and lightweight Storm 26 provides simple upkeep and operation to help young riders find the best line and stop on a dime. Progress quickly with Storm 26. Storm 26's lightweight, durable aluminum frame and size-specific fork travel of 100mm combine with a simple, lightweight drivetrain, quality mechanical disc brakes, and optimized fit for riders from 4'2" to 4'8", building and a love for dirt that’ll last a lifetime. Details: - Just enough fork travel to ease skill building and save weight. - Quicker starts and easy climbs make every ride enjoyable. -Putting a stop to sketchy brakes. - Models to meet the needs of every young rider. - No Other Way Limited Lifetime Warranty.

BUILD SKILLS THAT WILL LAST A LIFETIME Keeping a kid’s bike tough enough to take all the thrills and spills of becoming a better rider, but light enough to keep them motivated is a challenge that our engineering team took VERY seriously. The result, Storm Youth: Quality fit and finish of the best Norco bikes in a package optimized for small riders. NEW TECHNOLOGY So often, kids’ bikes are geared so high that they (or you) end up having to push up hills, and getting going from a stop makes learning that much harder. With Storm’s lower gears, balance kicks in sooner, and hills no longer grind your family fun to halt. GEOMETRY Every Storm Youth is built with the same spirit that drives our top-level mountain bikes by focusing on creating the best possible bike fit for the intended rider, no matter how small or young they are. WHEEL SIZE Available in 26”, 24” and 20” NO OTHER WAY LIMITED LIFETIME WARRANTY Rampage's durable frame design, hardware and component decisions have been made specifically to keep the Sight on the trail for longer. Accidents can happen, and when they do, our No Other Way Limited Lifetime Guarantee is our promise to get you back on the trail as soon as possible.

The version 2.0 of the Riff offers practical updates in features and geometry without going all-in with progressive geometry that almost everyone in chasing. We wanted to keep this frame a hardtail that's great for bike packing and familiar-feeling on long days in the saddle on rolling terrain. There is a slightly steeper seat angle for more efficient climbing and shorter seat tubes to benefit dropper posts. Tough Broski Sliding Dropouts allow you to run single-speed, geared or even hub gears. Rear hub spacing in updated to Boost 148 . A modified chainstay allows fitting even some double cranks with “plus size” 2.8? wide. - ED coating inside frame and under the paint increase rust resistance - Boost 148mm rear hub spacing - Geometry is optimized for 120mm forks. Will work well with a 100mm fork, too. - Tange Prestige heat-treated butted CrMo steel; butted CrMo rear end - ISO disc brake tabs - IRD Broski Sliding Dropouts - S-bend seat stays and chainstays - Rear rack and fender eyelets - Dropper post cable routing runs on downtube and inside the seat tube - 34.9mm seat collar(not included), 400mm post recommended - CNC-machined 44mm headtube: Will fit 1-1/8" steerers with a ZeroStack 44 headset or fit tapered steerers with a ZS44 upper assembly and external cup (EC44) lower assembly - Recommended tire size: 27.5 x 1.95" ‚Äi 2.8" - Only the Large size frame comes with bottle mounts on the seat tube - 5.7 lbs (XS)

The perfect blend of performance, value and fun, the Bolinas Ridge is ideal for riders that are new to mountain biking or simply want a low-hassle, low-cost bike to explore off-road. The Bolinas Ridge 1 is the best value model in the Bolinas family, offering bags of bang for very few bucks. Components include powerful Clark’s mechanical disc brakes, an SR/Suntour suspension fork and reliable and grippy off-road tires all of which are ideal to break out on the trails and push your own boundaries. Depending on size, the Bolinas Ridge comes with either smaller 27.5” (sizes XS to M) wheels or larger 29" (sizes M to XL) wheels to guarantee a perfect fit. Wheel Size X-Small - Medium: 27.5-inch Medium - XX-Large: 29-inch

The Bolinas Ridge is perfectly suited for recreational riders wishing to explore singletrack and dirt trails with a mountain bike built for real trails, with trail capable suspension forks and all-conditions disc brakes. Key upgrades over the Bolinas Ridge 1: - Shimano Altus 3x8 drivetrain - Tektro M275 hydraulic disc brakes - SR Suntour XCM DS fork Wheel size: - Sizes X-Small – Medium: 27.5-inch - Sizes Medium – X-Large: 29-inch

The Bobcat Trail family of mountain bike hardtails are designed for the rider looking for a capable singletrack machine, featuring everything you need to have a great ride. The heart and soul of the ride stem from the lightweight, Series 2 aluminum alloy frame, which features long and low trail geometry and room for either 27.5" or 29" wheels. 120mm of rock garden-ready travel adds to the bike's trail capability and fun factor. All Bobcat Trail models feature internal cable routing, hydraulic disc brakes, and wide-range off-road specific drivetrains. - Series 2 6061 Aluminum frame - SR Suntour XCM HLO 120mm travel fork - Shimano Altus 2x8 drivetrain - Tektro M275 hydraulic disc brakes

A summer blockbuster with an eye for adventure, the Rockhopper Comp lives for high action and fast-paced plot twists. It features a Premium A1 Aluminum frame making its singletrack debut. Roll the credits to discover an SR SunTour XCM fork with a custom two-way damping circuit, Specialized Alloy wheelset, Shimano BR-MT200 hydraulic stoppers, and Shimano's wide-range 1x10 drivetrain. You have backup provided by a supporting cast that's all thriller and no filler but it will never leave you hanging. - A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper's butted aluminum frame features hydroformed top and downtubes to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing, and dropper-post compatibility. - To ensure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we've paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. - Beautifully beastly, Shimano BR-MT200 hydraulic disc brakes pack a mean bite but deliver their power with a refined, intuitive feel to make for a package that punches way above its pay grade. - Keep things simple with a durable 1x Shimano drivetrain with plenty of range and a clutch-equipped rear derailleur that keeps your ride quiet—and your chain on. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Specialized Alloy rims for a strong, light, and durable wheelset hat trick.

The durable and lightweight Storm 27.5 provides simple upkeep and operation to help young riders find the best line and stop on a dime. Progress quickly with Storm 27.5. Storm 27.5's lightweight, durable aluminum frame and size-specific fork travel of 100mm combine with a simple, lightweight drivetrain, quality mechanical disc brakes, and optimized fit for riders from 4'2" to 4'8", building and a love for dirt that’ll last a lifetime. Details: - Just enough fork travel to ease skill building and save weight. - Quicker starts and easy climbs make every ride enjoyable. - Putting a stop to sketchy brakes. - Models to meet the needs of every young rider. - No Other Way Limited Lifetime Warranty

The durable and lightweight Storm 27.5 provides simple upkeep and operation to help young riders find the best line and stop on a dime. Storm 27.5’s lightweight, durable aluminum frame and size-specific fork travel of 100mm combine with a simple, lightweight drivetrain, quality mechanical disc brakes, and optimized fit for riders from 4’7.5” to 5’1.5”, building and a love for dirt that’ll last a lifetime. - Progressive design for nimble,?confident trail performance. - The perfect amount of suspension for comfort and control on the trail. - Mechanical systems protected from the elements. - Stop on a dime. - Size-specific wheels optimize the ride. - Versatile frame features to take you anywhere. - No Other Way Limited Lifetime Warranty.

All barn-burner and no benchwarmer, the Rockhopper Sport throws out the playbook when it comes to putting performance points on the board while playing some serious defense on behalf of your wallet. Game-ready with Tektro M275 hydraulic disc brakes, Shimano CUES shifting, and an SR SunTour XCM fork that's built to hustle, the Rockhopper Sport can tack up the win on any given Sunday—and the rest of the week too for that matter. - A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper's butted aluminum frame features hydroformed top and downtubes to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing, and dropper-post compatibility. - To ensure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we've paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. - Bringing our Rx Tune to Rockhopper for the very first time, the lockout-equipped SR Suntour XCM with custom Multi-Circuit damping brings size-specific travel and spring rates to the show in a performance that's sure to impress while also ensuring consistent geometry, handling, and suspension performance, regardless of frame or wheel size. - Beautifully beastly, Tektro hydraulic disc brakes pack a mean bite but deliver their power with a refined, intuitive feel to make for a package that punches way above its pay grade. - Keep things simple with a durable 1x Shimano drivetrain with plenty of range and a clutch-equipped rear derailleur that keeps your ride quiet—and your chain on. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Specialized rims for a strong, light, and durable wheelset hat trick. Wheel size: Sizes X-Small – Small: 27.5-inch Sizes Medium – X-Large: 29-inch

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)

Better performance. Better value. Better Rockhopper. By tapping the fit and handling advantages of pairing each rider with their ideal wheel size and suspension that works its hardest for everyone thanks to our size-specific Rx Tune, we've baked in added performance to the Rockhopper without dialing up the price. The reliable and crisp Shimano drivetrain provides a robust 2x9 drivetrain that can handle everything you're throw down while confident braking from Shimano hydraulic disc brakes seals the deal of the century. - A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper’s butted aluminum frame features hydroformed top and downtubes in order to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing and dropper-post compatibility. - With the goal of making sure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. - Bringing our Rx Tune to Rockhopper for the very first time, the SR Suntour XCM with custom Multi-Circuit damping brings size-specific travel and spring rates to the show in a performance that’s sure to impress while also ensuring consi

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

Charger Youth 26 is a durable and lightweight kid's bike, perfect for exploring local trails, commuting to school, or going on adventures with the family. Progressive, kid-focused design. Charger Youth 26 has kid-friendly geometry, high-quality suspension and gearing, and powerful disc brakes. Details: - Versatile and durable frame details. - Low standover – built just for kids. - Plush, supportive suspension, and gearing. - High-quality, powerful disc brakes. - Premium Shimano drivetrain. - No Other Way Limited Lifetime Warranty.

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

All barn-burner and no benchwarmer, the Rockhopper Sport throws out the playbook when it comes to putting performance points on the board while playing some serious defense on behalf of your wallet. Game-ready with Shimano's BR-MT200 hydraulic disc brakes, Shimano CUES shifting, and an SR SunTour XCM fork that’s built to hustle, the Rockhopper Sport can tack up the win on any given Sunday—and the rest of the week too for that matter. - A heart of gold, presented in our lightweight yet durable Premium A1 Aluminum, the Rockhopper’s butted aluminum frame features hydroformed top and downtubes to keep weight low and strength high, all while providing increased standover clearance, slick internal cable routing, and dropper-post compatibility. - To ensure that the Rockhopper offers both the best fit and best performance for every person, no matter their measure, we’ve paired each Rockhopper frame size with the optimal wheel size. The result is a Rockhopper to fit every rider and the assurance that every Rockhopper is rolling on the best-handling wheel for its frame size. - Bringing our Rx Tune to Rockhopper for the very first time, the lockout-equipped SR Suntour XCM with custom Multi-Circuit damping brings size-specific travel and spring rates to the show in a performance that’s sure to impress while also ensuring consistent geometry, handling, and suspension performance, regardless of frame or wheel size. - Beautifully beastly, Shimano hydraulic disc brakes pack a mean bite but deliver their power with a refined, intuitive feel to make for a package that punches way above its pay grade. - Keep things simple with a durable 1x Shimano drivetrain with plenty of range and a clutch-equipped rear derailleur that keeps your ride quiet—and your chain on. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Specialized rims for a strong, light, and durable wheelset hat trick.

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

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

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

The Storm 120 opens up the world of off-road adventure. It’s built for off-road adventure, but the lightweight aluminum Storm 120 is more than happy to lead a double life on city streets and park paths. A staple in the lineup as a progressive off-road bike to take on your next adventure. An all-around bike for city or trails, to discover your favorite way to ride. The Storm provides a more forward weight distribution within an extended wheelbase for powerful, efficient pedaling, increased climbing traction and added grip and control on descents. Details: - Progressive design for nimble, confident trail performance. - The perfect amount of suspension for comfort and control on the trail. - Mechanical systems protected from the elements. - Stop on a dime. - Size-specific wheels optimize the ride. - Versatile frame features to take you anywhere. - No Other Way Limited Lifetime Warranty.

The Storm 120 features a progressive off-road design and features that’ll help you discover your favourite way to ride. The Storm 120 opens up the world of off-road adventure. It’s built for off-road adventure, but the lightweight aluminum Storm 120 is more than happy to lead a double life on city streets and park paths. Details - Progressive design for nimble,?confident trail performance. - The perfect amount of suspension for comfort and control on the trail. - Mechanical systems protected from the elements. - Stop on a dime. - Size-specific wheels optimize the ride. - Versatile frame features to take you anywhere. - No Other Way Limited Lifetime Warranty.

The Asura features a lightweight but tough Chromoly/steel frame, a 100mm travel fork, and a stacked list of Radio, RST, and Tektro components that make a fun and exciting 26" machine that you won't be able to put down. It's ready for serious all-terrain fun on the streets, jumps, and pumptracks.

The updated Rampage focuses Norco's two decades of riding and building dirt jumpers into a platform where modern design, engineering, and jump-specific spec come together to push style and adrenaline to the next level. With help from our team rider Matt MacDuff, we’ve made some significant updates. Purpose-built for big air, this bike will literally up your game at the dirt jumps, pump track, or your local skatepark.

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