Mountain

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. Shimano and MicroSHIFT team up for drivetrain duties with a robust 2x8 drivetrain that can handle everything you throw down, while confident braking from Radius CX7 mechanical disc brakes seals the deal of the century. A heart of gold, the Rockhopper's lightweight yet durable Premium A1 Aluminum frame features butted aluminum tubes 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. - A durable Formula freehub and SunRace 8-speed cassette keep you rolling smoothly without putting up a fuss. - Radius CX-7 disc brakes offer confident, consistent braking in any trail condition. - With Rx Tune on Rockhopper, the SR Suntour XCE 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 size.

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 all-new Rockhopper without dialing up the price. Shimano and MicroSHIFT team up for drivetrain duties with a robust 2x8 drivetrain that can handle everything you throw down, while confident braking from Radius CX7 mechanical disc brakes seals the deal of the century. - A heart of gold, the Rockhopper's lightweight yet durable Premium A1 Aluminum frame features butted aluminum tubes 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. - With Rx Tune on Rockhopper, the SR Suntour XCE 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 size. - Radius CX-7 disc brakes offer confident, consistent braking in any trail condition. - A durable Formula freehub and SunRace 8-speed cassette keep you rolling smoothly without putting up a fuss.

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 all-new Rockhopper without dialing up the price. Shimano and MicroSHIFT team up for drivetrain duties with a robust 2x8 drivetrain that can handle everything you throw down, while confident braking from Radius CX7 mechanical disc brakes seals the deal of the century. - A heart of gold, the Rockhopper's lightweight yet durable Premium A1 Aluminum frame features butted aluminum tubes 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. - With Rx Tune on Rockhopper, the SR Suntour XCE 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 size. - Radius CX-7 disc brakes offer confident, consistent braking in any trail condition. - A durable Formula freehub and SunRace 8-speed cassette keep you rolling smoothly without putting up a fuss.

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. Wheel size: Sizes X-Small – Small: 27.5-inch Sizes Medium – X-Large: 29-inch

A summer blockbuster with an eye for adventure, the Rockhopper Comp lives for high action and fast-paced plot twists and features an all-new, 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, Stout wheelset, SRAM Level hydraulic stoppers and MicroSHIFT's wide-range 1x9 drivetrain and you have backup provided by a supporting cast that's all thriller and no filler, but 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 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. - Beautifully beastly, SRAM Level 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. - 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. - Keep things simple with a durable 1x MicroSHIFT drivetrain that offers plenty of range along with 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 Stout rims for a wheelset hat-trick: strong, light and durable.

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 MT200 hydraulic disc brakes, MicroSHIFT 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 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. - Beautifully beastly, SRAM Level 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 MicroSHIFT drivetrain that offers plenty of range along with a clutch-equipped rear derailleur that keeps your ride quite—and your chain on. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Stout rims for a wheelset hat-trick: strong, light and durable.

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 MT200 hydraulic disc brakes, MicroSHIFT 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 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. - Beautifully beastly, SRAM Level 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 MicroSHIFT drivetrain that offers plenty of range along with a clutch-equipped rear derailleur that keeps your ride quite—and your chain on. - Pair dead-reliable hubs from Formula with our 25-millimeter internal diameter, hookless Stout rims for a wheelset hat-trick: strong, light and durable.

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-DS 120mm travel fork - Shimano Altus 2x9 drivetrain - Marin Aluminum Double Wall rims w/WTB Trail Boss 2.25" tires - Tektro M275 hydraulic disc brakes

Off-road friendly and lightweight, the Aggressor Comp is perfect for everyday recreational use. It features X Guides that keep cables tucked away and tidy. Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch

The Avalanche is equipped with the most capable components to inspire confidence and progression on the trails. Features like the dropper-post compatible frame and tubeless-ready rims will help you let loose on singletrack, get up those tricky climbs, and push your limits on the descent.

For the aspiring mountain biker who wants a trusted ride that will adapt as their skills develop, the Avalanche Elite features a SR Suntour XCR-RL suspension fork and microSHIFT M851 shifters that will smooth out the ride.

For the aspiring mountain biker who wants a trusted ride. Our top-of-the-line Avalanche features a Rockshox Recon RL suspension fork and a SRAM SX 12 speed drivetrain, getting you off to a great start that will adapt as your skills develop. Smoother shifting, more powerful brakes, better suspension fork performance. The Avalanche Expert is equipped with the most capable components within the lineup, feeding you the confidence to progress your singletrack skills on climbs, descents and all the straightaways you can handle. The aluminum frame is dropper post-compatible and packaged with tech upgrades like tubeless-ready rims, an intuitive SRAM 12-speed drivetrain and a 120mm travel RockShox fork with remote lockout that prime you for better, more efficient riding. - Completely re-designed alloy frame for renewed style and swagger - Internal cable routing allows for a clean look - New floating seat stays provide additional compliance and comfort Wheel size: - Sizes Small – Large: 27.5-inch - Sizes Medium – X-Large: 29-inch

For the aspiring mountain biker who wants a trusted ride, the Avalanche Elite features an SR Suntour XCT-DS suspension fork, microSHIFT 9-speed shifter, and microSHIFT derailleur, providing a trusted ride that will help develop skills. - Completely re-designed alloy frame for renewed style and swagger - Internal cable routing allows for a clean look - New floating seat stays provide additional compliance and comfort Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch

Palomar is perfect for Bike Paths, Dirt Roads, and Around the Block - 80mm suspension fork to soak up the cul de sac potholes - V-Brakes for affordable stopping power - Hi-ten steel frame for comfort and durability

Time to Level Up! The Cannondale Trail is your first-class upgrade to next-level mountain biking—engineered for fun by a brand trusted by Champions. Highlights: - A lightweight, durable SmartForm C3 Alloy frame - 29" wheels on the larger sizes, 27.5" wheels on XS, and Small for the best blend of fit and speed - Bump-eating SR Suntour XCM35 Boost fork with 100mm of travel (80mm on XS and Small sizes) - Shimano CUES U6000 10-speed shifting - wide-range gearing with the simplicity of a single front chainring - A hidden kickstand mount, plus mounts for a rack and fenders, offer true do-it-all versatility

Time to Level Up! The Cannondale Trail is your first-class upgrade to next-level mountain biking—engineered for fun by a brand trusted by Champions. Highlights: - A lightweight, durable SmartForm C3 Alloy frame - 29" wheels on the larger sizes, 27.5" wheels on XS and Small for the best blend of fit and speed - Bump-eating SR Suntour XCM35 Boost fork with 100mm of travel (80mm on XS and Small sizes) - Shimano CUES U4000 9-speed shifting - wide-range gearing with the simplicity of a single front chainring - A hidden kickstand mount, plus mounts for a rack and fenders, offer true do-it-all versatility

Level Up A mountain bike built to raise your game and ignite a passion for the trail. Designed for the mountains and ready for anything Where it thrives: Low-impact trails, gravel roads, leisurely ride What it's built for: handling & durability Highlights - Light and durable SmartForm C3 Alloy frame - SR Suntour XCM suspension fork, 100mm travel. - Shimano 8-speed shifting with double chainring crank / Shimano hydraulic disc brakes SmartForm C3 Alloy Simple yet sophisticated aluminum construction yields a light, lively frame that outperforms anything in its class SAVE Micro-suspension Delivers a smoother, more controlled ride thanks to strategically engineered flex zones built into the frame's rear triangle Slack and Stable A slack 68-degree head angle creates exceptionally stable handling so that you can charge the descents with confidence Right-Sized Wheels The smaller sizes of Trail roll on 27.5" wheels, while the larger sizes come with 29" wheels to deliver the best blend of fit, fast, and fun for every rider StraightShot Internal Cable Routing For an integrated look and easy maintenance, the shift and dropper post cables route cleanly through the StraightShot window in the down tube, while the rear brake line is secured outside the frame

Level Up. A mountain bike built to raise your game and ignite a passion for the trail. Designed for the mountains and ready for anything. Highlights - Light and durable SmartForm C3 Alloy frame - SR Suntour M3030 suspension fork, 75mm travel - 7-speed drivetrain w/ double chainring cranks / Tektro mechanical disc brakes Where it thrives: Low-impact trails, gravel roads, leisurely ride What it's built for: Handling, durability 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)

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 Grappler is Surly's dedicated drop-bar trail bike. With mountain geo designed around a comfortable, confident drop-bar hand position, it's lively and responsive on single-track, double-track, and other degraded surfaces. Ready to haul essential gear for all-day dirt rides and quick bikepacking excursions, captured thru-axles front and rear provide ideal stiffness and handling. Built around 27.5" wheels and compatible with internally geared hubs and single-speed setups, Surly's tried-and-true Gnot-Boost spacing allows riders to run 142mm or 148mm rear hubs. - 100% Surly Chromoly steel frame and fork, featuring Surly's proprietary 'Natch tubing, double-butted main triangle, 1-1/8" headtube, non-suspension corrected. - Horizontal-slotted dropout, Surly Gnot-Boost spacing. - Seat stay-mounted bottle bosses on all sizes except XS, plus three-pack mounts at the top and bottom of the down tube and stealth dropper post routing. - E.D. coated frame for increased life expectancy. - 27.5 x 2.8" tire clearance (with or without fenders).

The Largest Tire Clearance on a Fat Bike Frame From log and root covered ribbons of twisty singletrack to miles of powdery snow or sandy beaches, Ice Cream Truck can handle it all. You could probably even hop over a grizzly if the situation arises. Probably. While we could certainly throw out terms like “confidence-inspiring” and “traction-laden” to describe Ice Cream Truck, those phrases are mostly bull, so we’re not going to do that. We’re not here to inspire you, and we didn’t laden it with anything. What we did do was design a monolith of a trail bike that doesn’t give two shits about what’s in front of it. 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. - Long toptube, short seatstays, and a 68-degree headtube angle makes it tight and maneuverable on fast, technical terrain - Modern trail bike standards like stealth dropper post routing, 44mm headtube, and thru-axles - Clearance for a full 26” x 5” tire on 100mm rims - 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

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 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. - 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

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 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 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 Front Suspension bike features a Rock Shox 35 Gold RL A2 suspension fork with 140mm travel, and it’s paired with a dropper post out the box. Progressive trail geometry and Surly’s Gnot-Boost rear dropout system deliver a versatile bike with the ability to swap hubs and wheel sizes. If you want to round-house kick some trail right in the face, the Karate Monkey is your sled. - 100% Surly Chromoly steel frame, double-butted main triangle and 44mm headtube - The tubeset uses Surly custom trumpet tubes for greater stiffness and durability - Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142 and 148 x 12mm thru, as well as 135mm w/ 10/12 washer - RockShox 35 Gold RL A2 suspension fork with 140mm travel - TranzX YSP15 dropper post with stealth routing; 100mm travel on XS, 120mm travel on SM–XL

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