Fitness

If the wilderness beckons, the Arise Tour won’t stand in your way with its twin Tubus racks, mudguards and Supernova dynamo lights. Regardless of load, the Ames sub-compact 30 / 46T crankset and generous 11 – 42T cassette mean you’ll always have enough gears to tackle those steeper gradients. For a modern touch, flared bars allow for added packing space as well as sturdier handling while riding on the drops. For touring purists, bar-end shifters give you peace of mind over more complicated combination shifters. The distance-orientated Arise Tour's racks, mudguards, and dynamo lights help to escape far beyond the limits of the city.

This bike will take you further. Designed with the support of our family of field testers, the Beyond 2 is the natural evolution of the Beyond 1. Tried and tested fast-rolling wheels, multiple mounting points, and a range of gears remain. A Supernova dynamo lighting system joins the bike’s features, so you never have to charge your batteries – ideal for excursions that go that little bit further. And at the front, a demi-porteur rack supports more cargo space that doesn’t compromise steering and handling. A new version of our continent-crossing adventure tourer with a specification based on feedback from users in the field.

Made to cross countries and continents via all kinds of roads and trackways... The Beyond 1 serves as the perfect first bike for fledgling adventurists. With tires as wide as a mountain bike accompanied by a 28 / 40T chainset, this bike will be able to reach wherever you’ve plotted on the map. Leverage-boosting bars provide added control, and an eye-watering selection of mounting points mean you won’t need to leave anything at home. Its simplicity makes it easy to service, too.

Lively when ridden unloaded, the Beyond+ remains stable once laden with bikepacking bags. Taking off-road riding to its limits, the Beyond+ won’t take no for an answer. 2.8’’ tubeless ready tyres, as well as 27.5’’ diameter wheels, which will cruise over anything – a joy to ride unloaded but just as capable with a full rack of bike packing equipment. Powered by a Sram 12-speed SX Eagle groupset, only gradients close to vertical will be unmanageable, thanks to the impressive 11 – 50T cassette. And when you do crest the summit at a remarkable speed, twin-piston Level hydraulic brakes will stop the bike in an instant. With dropper post routing and suspension-corrected geometry, you can add both later if desired.

With a full range of mounts and braze-ons across its fork and frame, it's happy to accept either panniers or bike packing bags. The Beyond AL is our aluminum equivalent from the range. The heavily hydro-formed tube profile and fork come with internal light cable routing, complete with fender, rack, and triple cage mounts for overnight trips. The Beyond AL is front derailleur compatible for those preferring a more comprehensive range of gearing options up the front. All sizes come with 12mm through-axles on the front and rear, besides size-matched 27.5" wheels on the size S option to ensure efficient geometry across the range.

Offroad commuter, urban hauler, beer & café bike, a once-in-a-while gravel- / mountain bike, even a capable tourer. - whatever you call it, whatever your proposed usage might be: this one probably can. If you want reliable 1x shifting that rivals more expensive configurations, the Arise Geared is the bike for you. Fitted with a Microshift Advent 9-speed drivetrain and generous 11 - 42T cassette on a sturdy steel frame, you have a ride for life. Shimano hydraulic disc brakes provide reliable stopping power in the wet, while flat bars keep you comfortable and secure. A deck-style front rack, pannier, and mudguard mounts give you plenty of options for trips further afield.

A cross-inspired bike built to conquer the city streets, the Super Professional features the 2-For-1 Dropout, All-City's elegantly designed combination geared or single-speed sliding dropout system. Fast, responsive, agile, and capable on mixed terrain, the Super Professional can be converted from single-speed to geared or back again to crush all your daily deeds and commutes. - 612 Select Tubing - Features All-City's 2-For-1 Dropout, a beautifully crafted sliding dropout system - Signature fork crown with four-point rack mounts - Two bottle cage mounts, plus mounts in front and rear for racks and fenders - 12mm thru-axles, flat-mount brakes

A steel utility vehicle designed for fully loaded exploration, whether across town or across the country. A Versatile All-Season Commuter Bike If you're like us, your bike needs likely change by the day, week, month, or year. Quite the adaptable little beast, 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 is designed to be the ultimate steel utility vehicle. It relishes in those “take-the-long-way-home-and-find-some-beverages-along-the-way" sort of commutes. Snow, sleet, or sweltering humidity, this is an ideal year-round commuter bike. You can also haul enough crap on it that you don't even have to go home if you don't want to. - All the barnacles you could ever possibly ask for including rack and fender, multiple three-pack mounts, and mid-blade. - Gnot-Boost rear spacing with Rohloff torque arm slot and Bill/Ted trailer mount - Clearance for 29" x 2.5" or 27.5" x 2.8" tires with fenders

A cross-inspired bike built to conquer the city streets, the Super Professional features the 2-For-1 Dropout, All-City's elegantly designed combination geared or single-speed sliding dropout system. Fast, responsive, agile, and capable on mixed terrain, the Super Professional can be converted from single-speed to geared or back again to crush all your daily deeds and commutes. - 612 Select Tubing - Features All-City's 2-For-1 Dropout, a beautifully crafted sliding dropout system - Signature fork crown with four-point rack mounts - Two bottle cage mounts, plus mounts in front and rear for racks and fenders - 12mm thru-axles, flat-mount brakes

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)

...a slender frame, it's ready for the commute or to take on longer jaunts around the countryside come the weekend. Fellow commuters will blow you chef's kisses as you pedal through traffic with the timeless Oxbridge Geared. An understated steel frame hosts robust downtube shifters and an easy-to-maintain single-chainring 9-speed drivetrain with a wide cassette that can handle terrain anywhere in the city. Dual pivot caliper brakes and 28C tires give the classic feel of the bike a modern touch. Long-running sealed hubs and a classy metallic paint job complete the build, making you look the business as you go about your day the old-fashioned way.

THE URBAN RENEGADE Think of the Sequel as an urban Renegade, built to tackle anything midtown can throw at it. Our SSD custom geometry and Reynolds double-butted chromoly frame deliver a comfortable ride with maximum stability in every frame size. While those 650b wheels offer both the security of 12mm thru-axle mounting and the pot-hole-eating capability of high-volume 47c tires. Toss in high-powered hydraulic disc brakes, a no-nonsense 1 x 10 drivetrain and a ton of fender, bottle and rack mounts and the Sequel is clearly ready for urban assault no matter the surface or condition. FRAME DESIGN Starting with a wide and consistent stack and reach range, we set out to design a frame that could handle your everyday city life. Commuting year round in mother nature's worst conditions or hitting up a dirt trail the Sequel will make it happen and maintain a comfortable ride. As you start to review the geo chart you'll noticed we have 2 different fork offsets, 3 different BB drops and rear center measurements. Add size specific tubing and you have what we feel is the perfect fit for all sized riders. The reason for this custom geometry is to give you the best fit and the most comfort possible. MORE MOUNTS To make life easier we have positioned each mount externally in a variety of easy-to-use locations. With a wide collection of fork and frame mounts you can now choose to mount fenders, rear carrier, low-rider front carrier (or two cages for water bottles/ storage) and three front triangle water bottles. This will open up the options wherever and whenever you chose to ride. Bad weather, commuting, a short ride to the park or a longer adventure – anything is possible.

TAKES YOU ANYWHERE The dual-sport DXT's are pumped-up, go-anywhere/do-anything versions of our Allegro fitness bikes. With more gearing range to take on steeper hills and tougher terrain. Wider tires with a trail-capable tread for access to more riding areas, both paved and packed. And disc brakes and suspension forks for real off-road exploration and off-pavement adventure GIVING YOU A BREAK The advantages of disc brakes over rim brakes on a versatile bike like the DXT far exceed their sole disadvantage, weight gain. Besides their incredible power and modulation, they're just plain safer, especially in the rain. Once rims get wet or muddy, using friction to stop the wheel at its circumference is less efficient than using friction to stop a less wet or muddy small diameter disc near the center of the wheel from rotating. And eliminating the rim from braking surface duties results in a longer lasting wheel.

TAKES YOU ANYWHERE The dual-sport DXT's are pumped-up, go-anywhere/do-anything versions of our Allegro fitness bikes. With more gearing range to take on steeper hills and tougher terrain. Wider tires with a trail-capable tread for access to more riding areas, both paved and packed. And disc brakes and suspension forks for real off-road exploration and off-pavement adventure GIVING YOU A BREAK The advantages of disc brakes over rim brakes on a versatile bike like the DXT far exceed their sole disadvantage, weight gain. Besides their incredible power and modulation, they're just plain safer, especially in the rain. Once rims get wet or muddy, using friction to stop the wheel at its circumference is less efficient than using friction to stop a less wet or muddy small diameter disc near the center of the wheel from rotating. And eliminating the rim from braking surface duties results in a longer lasting wheel.

THE URBAN RENEGADE Think of the Sequel as an urban Renegade, built to tackle anything midtown can throw at it. Our SSD custom geometry and Reynolds double-butted chromoly frame deliver a comfortable ride with maximum stability in every frame size. While those 650b wheels offer both the security of 12mm thru-axle mounting and the pot-hole-eating capability of high-volume 47c tires. Toss in high-powered hydraulic disc brakes, a no-nonsense 1 x 10 drivetrain and a ton of fender, bottle and rack mounts and the Sequel is clearly ready for urban assault no matter the surface or condition. FRAME DESIGN Starting with a wide and consistent stack and reach range, we set out to design a frame that could handle your everyday city life. Commuting year round in mother nature's worst conditions or hitting up a dirt trail the Sequel will make it happen and maintain a comfortable ride. As you start to review the geo chart you'll noticed we have 2 different fork offsets, 3 different BB drops and rear center measurements. Add size specific tubing and you have what we feel is the perfect fit for all sized riders. The reason for this custom geometry is to give you the best fit and the most comfort possible. MORE MOUNTS To make life easier we have positioned each mount externally in a variety of easy-to-use locations. With a wide collection of fork and frame mounts you can now choose to mount fenders, rear carrier, low-rider front carrier (or two cages for water bottles/ storage) and three front triangle water bottles. This will open up the options wherever and whenever you chose to ride. Bad weather, commuting, a short ride to the park or a longer adventure – anything is possible.

TAKES YOU ANYWHERE The dual-sport DXT's are pumped-up, go-anywhere/do-anything versions of our Allegro fitness bikes. With more gearing range to take on steeper hills and tougher terrain. Wider tires with a trail-capable tread for access to more riding areas, both paved and packed. And disc brakes and suspension forks for real off-road exploration and off-pavement adventure GIVING YOU A BREAK The advantages of disc brakes over rim brakes on a versatile bike like the DXT far exceed their sole disadvantage, weight gain. Besides their incredible power and modulation, they're just plain safer, especially in the rain. Once rims get wet or muddy, using friction to stop the wheel at its circumference is less efficient than using friction to stop a less wet or muddy small diameter disc near the center of the wheel from rotating. And eliminating the rim from braking surface duties results in a longer lasting wheel.

COMFORT AND COMPETENCE The Explorer has been one of our best-selling bikes, ever since its introduction in 1982. Originally designed as a mountain bike, the Explorer has since evolved into a very practical and very comfortable sport comfort bike. Inspired in part by our Hudsons and Citizens, without sacrificing the versatile on or off-road competence of the original Explorer, the newest generation Explorer is all about getting the most fun out of the ride, in STYLE, with performance and comfort features that make getting around so effortless it hardly feels like exercise. LIGHTWEIGHT ALUMINUM When it comes to recreational riding on a so-called comfort bike, nothing gets more uncomfortable faster than having to pedal more weight than necessary. Explorers are built with lightweight 6061 aluminum tubing, resulting in a bike that is as easy to ride as it is to load onto a vehicle. - Lightweight aluminum frame, with comfortable upright ride position - SR Suntour XCE Suspension fork to soak up impacts - Strong double-wall alloy rims and stainless steel spokes - Shimano EZ-Fire Plus, 24-speed shifting - Shimano crankset with integrated chainguard - Tektro direct pull brakes with Shimano levers - Suspension, alloy extreme comfort seat post - Jamis Comfort with memory foam and bumper springs

COMFORT AND COMPETENCE The Explorer has been one of our best-selling bikes, ever since its introduction in 1982. Originally designed as a mountain bike, the Explorer has since evolved into a very practical and very comfortable sport comfort bike. Inspired in part by our Hudsons and Citizens, without sacrificing the versatile on or off-road competence of the original Explorer, the newest generation Explorer is all about getting the most fun out of the ride, in STYLE, with performance and comfort features that make getting around so effortless it hardly feels like exercise. LIGHTWEIGHT ALUMINUM When it comes to recreational riding on a so-called comfort bike, nothing gets more uncomfortable faster than having to pedal more weight than necessary. Explorers are built with lightweight 6061 aluminum tubing, resulting in a bike that is as easy to ride as it is to load onto a vehicle. - Lightweight aluminum frame, with comfortable upright ride position - SR Suntour XCE Suspension fork to soak up impacts - Strong double-wall alloy rims and stainless steel spokes - Shimano EZ-Fire Plus, 24-speed shifting - Shimano crankset with integrated chainguard - Tektro direct pull brakes with Shimano levers - Suspension, alloy extreme comfort seat post - Jamis Comfort with memory foam and bumper springs

READY FOR THE TRAIL Building great recreational-level bikes that ride much like our high-end bikes is a passion at Jamis. No bikes showcase our commitment to do just that better than these. The Helix chassis emphasizes all-day performance with quick, but not overly twitchy handling attributes. Make no mistake though, if you want to throw down they're more than able to keep up. BUILT TO LAST Because it's much easier and much less expensive to replace a derailleur hanger than it is to repair or replace a frame, every Helix frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does. - 6061 aluminum frame - SR Suntour XCT 30 HLO 27.5", coil spring, hydraulic speed lock out adjust, external preload adjustor - Alex TD26 27.5" rims, 32H, alloy disc hubs - MicroSHIFT Advent 9-speed drivetrain - Sealed cartridge bottom bracket - Shimano MT200 hydraulic disc brakes - Jamis XC alloy handlebar & stem - Jamis ATB Sport women's saddle

OWNING CITY STREETS FOR 30 YEARS Our Codas have been some of our most popular bikes for decades, and for good reason. There's the smooth-riding Reynolds chromoly frames, the well-thought-out geometry, the heads-up riding position and the smart component selections, from the super-wide gearing range to the easy-adjust stems: these bikes are simply some of the best and most versatile around. THE BUTTERY RIDE OF QUALITY STEEL We're famous for our steel bikes and the Codas have a lot to do with that. No frame material makes more sense on beat-up city streets than steel. Why? Hit a baseball with a wooden bat and then hit one with an aluminum bat and you'll know why. You want your frame material to soak up those streets, not beat you with them. And we use only the best: Reynolds cold-worked, double-butted chrome-moly steel.

OWNING CITY STREETS FOR 30 YEARS Our Codas have been some of our most popular bikes for decades, and for good reason. There's the smooth-riding Reynolds chromoly frames, the well-thought-out geometry, the heads-up riding position and the smart component selections, from the super-wide gearing range to the easy-adjust stems: these bikes are simply some of the best and most versatile around. THE BUTTERY RIDE OF QUALITY STEEL We're famous for our steel bikes and the Codas have a lot to do with that. No frame material makes more sense on beat-up city streets than steel. Why? Hit a baseball with a wooden bat and then hit one with an aluminum bat and you'll know why. You want your frame material to soak up those streets, not beat you with them. And we use only the best: Reynolds cold-worked, double-butted chrome-moly steel.

TAKES YOU ANYWHERE The dual-sport DXT's are pumped-up, go-anywhere/do-anything versions of our Allegro fitness bikes. With more gearing range to take on steeper hills and tougher terrain. Wider tires with a trail-capable tread for access to more riding areas, both paved and packed. And disc brakes and suspension forks for real off-road exploration and off-pavement adventure GIVING YOU A BREAK The advantages of disc brakes over rim brakes on a versatile bike like the DXT far exceed their sole disadvantage, weight gain. Besides their incredible power and modulation, they're just plain safer, especially in the rain. Once rims get wet or muddy, using friction to stop the wheel at its circumference is less efficient than using friction to stop a less wet or muddy small diameter disc near the center of the wheel from rotating. And eliminating the rim from braking surface duties results in a longer lasting wheel.

TAKES YOU ANYWHERE The dual-sport DXT's are pumped-up, go-anywhere/do-anything versions of our Allegro fitness bikes. With more gearing range to take on steeper hills and tougher terrain. Wider tires with a trail-capable tread for access to more riding areas, both paved and packed. And disc brakes and suspension forks for real off-road exploration and off-pavement adventure GIVING YOU A BREAK The advantages of disc brakes over rim brakes on a versatile bike like the DXT far exceed their sole disadvantage, weight gain. Besides their incredible power and modulation, they're just plain safer, especially in the rain. Once rims get wet or muddy, using friction to stop the wheel at its circumference is less efficient than using friction to stop a less wet or muddy small diameter disc near the center of the wheel from rotating. And eliminating the rim from braking surface duties results in a longer lasting wheel.

READY FOR THE TRAIL Building great recreational-level bikes that ride much like our high-end bikes is a passion at Jamis. No bikes showcase our commitment to do just that better than these. The Helix chassis emphasizes all-day performance with quick, but not overly twitchy handling attributes. Make no mistake though, if you want to throw down they're more than able to keep up. BUILT TO LAST Because it's much easier and much less expensive to replace a derailleur hanger than it is to repair or replace a frame, every Helix frame offers a replaceable derailleur hanger designed to yield in a crash before the frame does. - 6061 aluminum frame - SR Suntour XCE 28 DS 27.5", coil spring, external preload adjustor - Alex TD26 27.5" rims, 32H, alloy disc hubs - Shimano, 8-speed drivetrain - Sealed cartridge bottom bracket - Shimano MT200 hydraulic disc brakes - Jamis XC alloy handlebar & stem - Jamis ATB Sport saddle

COMFORT AND COMPETENCE The Explorer has been one of our best-selling bikes, ever since its introduction in 1982. Originally designed as a mountain bike, the Explorer has since evolved into a very practical and very comfortable sport comfort bike. Inspired in part by our Hudsons and Citizens, without sacrificing the versatile on or off-road competence of the original Explorer, the newest generation Explorer is all about getting the most fun out of the ride, in STYLE, with performance and comfort features that make getting around so effortless it hardly feels like exercise. LIGHTWEIGHT ALUMINUM When it comes to recreational riding on a so-called comfort bike, nothing gets more uncomfortable faster than having to pedal more weight than necessary. Explorers are built with lightweight 6061 aluminum tubing, resulting in a bike that is as easy to ride as it is to load onto a vehicle. - Lightweight aluminum frame, with comfortable upright ride position - Hi-tensile unicrown fork - Alloy 36H rims and stainless steel spokes - Shimano EZ-Fire Plus, 21-speed shifting - Forged alloy crankset with integrated chainguard - ProMax alloy direct-pull brakes with Shimano levers - Alloy micro-adjust seat post - Jamis Comfort with memory foam and bumper springs

COMFORT AND COMPETENCE The Explorer has been one of our best-selling bikes, ever since its introduction in 1982. Originally designed as a mountain bike, the Explorer has since evolved into a very practical and very comfortable sport comfort bike. Inspired in part by our Hudsons and Citizens, without sacrificing the versatile on or off-road competence of the original Explorer, the newest generation Explorer is all about getting the most fun out of the ride, in STYLE, with performance and comfort features that make getting around so effortless it hardly feels like exercise. LIGHTWEIGHT ALUMINUM When it comes to recreational riding on a so-called comfort bike, nothing gets more uncomfortable faster than having to pedal more weight than necessary. Explorers are built with lightweight 6061 aluminum tubing, resulting in a bike that is as easy to ride as it is to load onto a vehicle. - Lightweight aluminum frame, with comfortable upright ride position - Hi-tensile unicrown fork - Alloy 36H rims and stainless steel spokes - Shimano EZ-Fire Plus, 21-speed shifting - Forged alloy crankset with integrated chainguard - ProMax alloy direct-pull brakes with Shimano levers - Alloy micro-adjust seat post - Jamis Comfort with memory foam and bumper springs

FUN=FITNESS, FITNESS=FUN Musically speaking, Allegro means quick and lively. Which exactly characterizes the spirit of our Allegros: fitness bikes that are lively, quick, and seriously fun to ride. Our Allegros blend the speed and efficiency of a road bike with the heads up riding position many people prefer. LIGHTWEIGHT & PRECISION FEEL When it comes to fitness training and peak performance, nothing is more detrimental to flying fast than carrying more weight than you need to. Which is why every Allegro is built with lightweight triple-butted 6061 aluminum tubing. In fact, our aluminum Allegro frames shed 14 ounces over their steel Coda counterparts. We design comfort into the naturally stiffer ride by specifying large volume 32c tires, using similar geometry as our Codas, and then adding a few millimeters to the wheelbase length for just a tad more compliance. - Size Specific Design Triple-butted 6061 aluminum frame with fast back rear triangle - Hi-Ten straight blade unicrown with flat mount disc brake mounts - Double wall alloy rims, 32H, alloy hubs - Shimano Shimano EZ-Fire Plus, 21-speed - Forged alloy crankset with chainguard - Shimano RD-TY300 rear and Shimano FD-TY510 top swing front derailleurs - Promax TX-121 linear-pull brakes with front power modulator and Shimano levers - Jamis Touring saddle with SL cover

FUN=FITNESS, FITNESS=FUN Musically speaking, Allegro means quick and lively. Which exactly characterizes the spirit of our Allegros: fitness bikes that are lively, quick, and seriously fun to ride. Our Allegros blend the speed and efficiency of a road bike with the heads up riding position many people prefer. LIGHTWEIGHT & PRECISION FEEL When it comes to fitness training and peak performance, nothing is more detrimental to flying fast than carrying more weight than you need to. Which is why every Allegro is built with lightweight triple-butted 6061 aluminum tubing. In fact, our aluminum Allegro frames shed 14 ounces over their steel Coda counterparts. We design comfort into the naturally stiffer ride by specifying large volume 32c tires, using similar geometry as our Codas, and then adding a few millimeters to the wheelbase length for just a tad more compliance. - Size Specific Design Triple-butted 6061 aluminum frame with fast back rear triangle - Hi-Ten straight blade unicrown with flat mount disc brake mounts - Double wall alloy rims, 32H, alloy hubs - Shimano Shimano EZ-Fire Plus, 21-speed - Forged alloy crankset with chainguard - Shimano RD-TY300 rear and Shimano FD-TY510 top swing front derailleurs - Promax TX-121 linear-pull brakes with front power modulator and Shimano levers - Jamis Touring saddle with SL cover

OWNING CITY STREETS FOR 30 YEARS Our Codas have been some of our most popular bikes for decades, and for good reason. There's the smooth-riding Reynolds chromoly frames, the well-thought-out geometry, the heads-up riding position and the smart component selections, from the super-wide gearing range to the easy-adjust stems: these bikes are simply some of the best and most versatile around. THE BUTTERY RIDE OF QUALITY STEEL We're famous for our steel bikes and the Codas have a lot to do with that. No frame material makes more sense on beat-up city streets than steel. Why? Hit a baseball with a wooden bat and then hit one with an aluminum bat and you'll know why. You want your frame material to soak up those streets, not beat you with them. And we use only the best: Reynolds cold-worked, double-butted chrome-moly steel.

OWNING CITY STREETS FOR 30 YEARS Our Codas have been some of our most popular bikes for decades, and for good reason. There's the smooth-riding Reynolds chromoly frames, the well-thought-out geometry, the heads-up riding position and the smart component selections, from the super-wide gearing range to the easy-adjust stems: these bikes are simply some of the best and most versatile around. THE BUTTERY RIDE OF QUALITY STEEL We're famous for our steel bikes and the Codas have a lot to do with that. No frame material makes more sense on beat-up city streets than steel. Why? Hit a baseball with a wooden bat and then hit one with an aluminum bat and you'll know why. You want your frame material to soak up those streets, not beat you with them. And we use only the best: Reynolds cold-worked, double-butted chrome-moly steel.