Surly's Long Haul Trucker enjoys a reputation as one of the best riding and most value-packed touring bikes out there. It's been around long enough to be tested in the real world, in all kinds of places, with all kinds of loads on all kinds of roads. Sometimes, however, a combination of load, climate and terrain demands a bit more braking performance than a standard rim-brake LHT can provide. That's where the Disc Trucker comes in. Disc Trucker is a Long Haul Trucker specifically designed for the unique forces discs impose. Surly made sure it can run discs, racks, and fenders with no jury rigging, a somewhat unique feature they've just now decided to call Simulpatibility. You'll need to outfit it with the extras you want, like fenders and racks. Surly doesn't include that stuff because everybody's needs are different. From the casual commuter to the person who rides around the world more than once, the Disc Trucker is more than capable. It's a tool designed from the ground up to take you and a bunch of stuff just about anywhere you'd like to go. It is a tool to help you get lost and find yourself.
Off-road touring can be a zesty enterprise, but it’s not without its perils. Bicycles are simple machines that are extremely efficient, but all simple machines carry along with them the chance of breaking down. This efficiency can get you in trouble if your bike decides to break down far away from the comforts of your parent’s basement. If you’re going to ride your bicycles where no one can see, you better take gear that’s up to the task. Troll is up to the task. Our Troll was once a simple mountain bike frame with a few extras that made it nice for touring. The Troll has evolved into a frame that has been pushed deeper into the category of off-road touring. Its geometry is no longer suspension corrected, which gives it more room for a larger frame bag. We’ve also adorned this frame with our Gnot-Boost spacing, allowing you to use any mountain bike hub whether it be 135mm QR, 12 x 142mm thru-axle, or 12 x 148mm Boost hub. The chainstay yoke has been redesigned to be fully compatible with 26+ tires and the dropouts still allow you to run disc brakes, fenders, a Rohloff hub, and racks simultaneously. It also comes with more braze-ons than you thought possible – there are four triple bottle mounts on the fork alone (don’t get excited, you can only run one Anything Cage per fork leg), as well as two more triple bottle mounts on the down tube. Troll is a bike that has one purpose – and that purpose is to carry you as far away from society as possible. Man has known for eons the call of the indifferent forest. The inexorable march of time, and dumb crap like cell phones, have dulled our senses and made us afraid. Reclaim your animalistic tendencies atop Man’s greatest invention.
Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out. 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 singlespeed. 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) - Clearance for 26 x 3 or 27.5 x 2.8 tires
The Pack Rat is designed around porteur-style racks and front-loading optimization, with a front cargo-specific design to eliminate steering issues. The fork features internal routing for generator hubs and rear frame dropouts to accommodate multiple drivetrain configurations. It's an ideal choice for loaded commutes and bike trips with a lighter load, but also rides great when unloaded. - 26-inch Wheel Size has room for tires up to 26 x 2.0, 650B Wheel Size has room for tire up to 650b x 48mm - 100% Surly 4130 Chromoly frame, main triangle is double-butted; 1-1/8-inch threadless brazed Chromoly fork - Bosses front and rear for cantilever or linear-pull brakes, rack and fender eyelets at the dropouts, eyelets at the crown, and fully threaded through-blade fork eyelets for a front rack - Semi-horizontal dropouts with a derailleur hanger for geared or singlespeed drivetrains and/or wheelbase adjustability
The Rustler is Salsa’s playful and dynamic technical trail bike. It rewards the rider that’s willing to throw some body language into the way they tackle trails. Seek out features in the trail to find your flow; pop off every little rock and root, manual the rhythm sections, rail each corner, and boost every double.
Marrakesh is Salsa's world-touring bike, designed for fully loaded, rugged exploration. Marrakesh is stable and predictable when heavily loaded, and durable enough to be strapped down to the roof of a bus jostling over a remote pass. Turkish dust around the bottom bracket and mud from Thailand’s monsoon season make just as much sense on this bike as all the stickers from the other countries you’ve visited do. When you’ve decided to stop dreaming and actually make that year abroad a reality, Marrakesh is ready to pile on the miles. - Chromoly steel Cobra Kai tubing frame w/ Alternator dropouts - Salsa Marrakesh fork - Full rack, fender, low rider rack provisions
The Timberjack Ti absolutely owns all paths — wooded, skinny, and flowy, making you the master of every ride thanks to its multi-talented character. The frame is constructed from custom, top-shelf titanium with a fast-handling geometry to deliver the stiffness needed to whip through tight turns and accelerate with instant power, while super-short chainstays make it easy to lift over obstacles so you can stay with the flow. Run it as a 27.5+ with up to 3-inch tires for maximum fun, or go for efficiency with a 29er wheelset — with Salsa's Alternator Dropouts you get an impressive grip of wheelset and drivetrain options to suit your style and intention.
Warroad is Salsa’s endurance all-road bike built to perform on-road, while being fully capable of off-pavement pursuits. It’s the bike for riders who don’t define a road ride by the surfaces they travel. Endurance all-road geometry, Class 5 frame Vibration Reduction System, dual wheel-size compatibility with a wide range of tire fitments, and a variety of mounting options set the Warroad apart.
$1,050.00 - $1,099.00
Big Dummy is a long-tail cargo bike, which means that not only can you haul a serious amount of cargo, different accessories can be added to your Big Dummy frame and deck depending on what you want to carry. Being a dedicated single-piece frame, instead of an add-on to an existing bike, it's stiffer and resistant to torsional flex, which provides a better ride and longer lasting frame than long-tail add-ons. Like all Surly's frames, it's made of their size specific, 4130 CroMoly steel – a tube set engineered for cargo that sports lots of little touches that you've come to love in a Surly, like clearance for big tires and the use of common component sizes. Figure on being able to carry about 200 pounds (90kg) of cargo. The load weight, and how it's loaded, will affect the handling somewhat. Also, plan on using gears, especially as cargo weight increases. This may seem obvious, but as you get comfy with it, you will use your full range of gears as never before. It's suitable to loaded as well as unloaded riding. Bags, deck, rails, and rail collars are all designed to improve on previous offerings and work together to make sure your stuff is transported with safety and stability. It's an unbending interface, which when you're carrying lots of cargo, is a good thing to have. Get creative, and get hauling. If you intend to carry a passenger on your Big Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. These are included with MY17 Big Dummy bikes and frames, as well as available AM for older Big Dummy bikes and frames (compatible with all generations of Big Dummy bikes/frames). In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. If you are planning to carry a child on your Big Dummy, Surly recommends the use of a child seat. They've tested the Maxxi Yepp seat. Yepp makes an adaptor that allows their seat to mount onto Surly's deck. It works well with the Big Dummy. At this time other child seats are not recommended and will void your warranty. Surly is testing other options. Note: keep in mind Big Dummy weight limits when carrying a passenger.
There is no such thing as one bike that can do it all, but the Cross-Check comes mighty close. It's a cyclocross bike by design, but don’t be fooled into thinking that it has only one purpose. This jack-of-all-trades will do just as well getting you across the country as it does getting you across town. At home on the road, on trails, and on gravel, the Cross-Check'll fit pretty big tires, or smaller ones if you like. It can be built as a geared bike, a singlespeed, or a fixed-gear. The Cross-Check’s frame is engineered to supply a comfortable but lively ride. The tubing is CroMoly steel, high quality, custom-drawn, and built to our specifications. It's designed to work with components of popular sizes, meaning you can find both new and old parts to hang on this frame. It will accommodate a wide range of crank types and chainring sizes. It's got accommodations for racks and fenders (front and rear) and, because of its ample tire clearance, you can outfit it to suit where and how you will use it. There's a reason the Cross-Check has remained popular after all these years. The frame is comfy, tough as nails, and super versatile. Surly continues to hear from people for whom the Cross-Check has long been their go-to bike simply because it performs so astonishingly well on any surface.
The Horsethief Carbon Frameset is where your dream trail bike begins. The Horsethief frameset can be built with either 29-inch or 27.5-plus wheels, and the flip chip allows for subtle geometry tweaks. The Split Pivot rear suspension technology and 120mm Fox Float DPS Performance Elite shock are a recipe for incredible small bump compliance and traction. With this solid foundation in place, just add the parts that make you happy—we can’t wait to see what you do with it.
Given the choice between clearing challenging lines and taking them on with gusto, you prefer the latter. If this sounds like you, the Rustler Carbon frame is the perfect platform for your ultimate trail bike build. The Split Pivot rear suspension system with a Fox Float DPS Performance shock, flip chip geometry adjustment, and 27.5 x 2.3–2.8-inch tire clearance let you build the bike that suits your playful style. Get excited for a trail-roosting rig with impeccable pedaling efficiency—a surefire recipe for fun on many trails.
A class-leading touring bike, the newly redesigned Disc Trucker provides versatility and dependability on the daily commute or trans-continental excursion. Fork blade three-pack mounts enable you to attach and haul even more stuff, and the frame features a low bottom bracket and long chainstays for comfort and stability while loaded down. With increased stack height and improved standover clearance, plus ample space for larger tires and fenders, it’s designed to go the distance. Introduced in 2012, the Disc Trucker is widely considered one of the best-in-class touring bicycles available today. Truly at home on the road, it features updated geo and modern component compatibility, along with versatile mounting options that make it ideal for daily commutes and months-long disappearing acts alike. Built from Surly’s proprietary, touring-compliant 'Natch tubesets, updates to the Disc Trucker include a shortened seat tube and slightly sloped top tube for better stand-over clearance, plus an increased stack height for a more relaxed riding position. Shortened chainstays offer improved stiffness and maneuverability around corners, while 12mm thru-axles provide a stiffer feel and greater stability when fully loaded. To ensure the Disc Trucker continues to exceed expectations in terms of compatibility with modern product standards, its dropouts have been redesigned to accommodate flat-mount disc brakes and captured thru-axles. An updated fork incorporates dynamo routing and three-pack mounts for even more mounting options. - 100% Chromoly steel frame and fork; double-butted main triangle and E.D. coating for increased frame life - Braze-ons for fenders, racks, and almost anything else you might want to stick on your bike, plus spare spoke holders for when the road gets rough - Fork blade three-pack mounts for even more mounting options, plus routing for Dynamo hubs - Redesigned front and rear dropouts to accommodate captured 12mm thru-axles and flat-mount disc brakes - Clearance for 26 x 2.1" tires with or without fenders
$1,650.00 - $1,730.00
The Big Fat Dummy is a long tail cargo bike that took a few too many doses of growth hormones. At first glance, you might say that Surly just put bigger tires on a Big Dummy. But if you said that, you'd actually be very wrong so just… don't. Think of Big Fat Dummy as more of a second or third cousin to Big Dummy rather than a brother. They share some of the same DNA and look sort of similar, but they're two very different bikes and really only interact when they both reach for the potato salad spoon at that family reunion that no one really wants to be at anyway. Now that that's out of the way, let's get down to the nitty gritty of what makes this hulking beast of a bike tick. Surly's goal with designing a cargo bike around fat tires was to create the most stable, stiff, and traction-laden ride possible while hauling a ton of stuff. Big Fat Dummy has a longer toptube and slacker headtube than its more svelt cousin giving it a nice, predictable, and stable ride. They also used thinner, lighter tubing to construct its cargo area so while it's an overall burlier bike, there's not much difference in weight. Big Fat Dummy accepts either 10mm or 12mm axles in the rear with a spacing of 190/197mm. That big ‘ol spacing equates to one thing: tire clearance for days. Big Fat Dummy maxes out at a massive 26 x 5.25" tire.* While that large of a tire provides the most traction and stability a bike can possibly offer, it's also a lot of rubber to push and might not be for everybody. Luckily, Big Fat Dummy is also a blast to ride with 3" tires too. It uses the same 100mm suspension-corrected fork as the Wednesday, meaning if you want to add a little squishy-squishy to your ride, you can throw a Bluto on and let ‘er rip. If you intend to carry a passenger on your Big Fat Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. All Big Fat Dummy framesets and bikes ship with a Dummy deck, rails, bags, and the aforementioned Dummy Rail Collars so you can immediately start hauling cargo — human or otherwise. Big Fat Dummy is ready and willing to carry all sorts of crap — literally. It's already in use on an organic farm in Ecuador so it's likely that it's hauled some form of manure by now. *Using a 26 x 5.25" tire will cause some drivetrain limitations. For all the nuts and bolts of compatibility read Surly's blog on the subject.
Nobody knows what you like as well as you do. When you're hurtling down the trail at high speed, everything needs to be dialed. With 165mm of rear travel, plus our Split Pivot suspension system for pedaling efficiency and consistent braking traction, Cassidy is easy-up, easy-down. Take the Cassidy Carbon Frame, hand-select your dream team of parts, and build the enduro sled you've always wanted.
The 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
Fargo is Salsa's original drop bar mountain bike. A bit of a cult classic, it’s designed for mixed surface riders and bikepackers who want the versatility to take any route and the capability to carry everything needed when they’re out for days on end. The Fargo Steel's triple-butted Cobra Kai steel frame is as forgiving as it is reliable on weeks-long expeditions, while the carbon Firestarter fork pairs nicely with the frame and offers bosses and mount points for anything you’d want to attach to a bicycle fork. With an entire world of possible component setups, the Fargo Steel Frameset is a smooth-riding blank canvas you can build into the perfect tool for your two-wheeled needs.
Rustler Carbon XTR goes all-in on singletrack stoke. We started with a lightweight carbon frame and playful geometry, plus the climbing prowess and small-bump compliance of Split Pivot. Next, we added 27.5" carbon wheels to keep it as nimble as possible. Then, we gave it a Fox Float 36 Performance Elite Grip2 fork with 150mm of travel and a Fox Float DPS Performance Elite 130mm shock to soak up trail impacts. The finishing touch is Shimano’s flawless XTR drivetrain. Put it all together, and you have a bike that uses all of the technology at its disposal to maximize trail thrills. Rustler XTR is a carbon 27.5 trail bike that loves to get rowdy.
Rustler Carbon XT will inspire you to get creative with your trail riding. With 150mm front and 130mm rear suspension travel, playful geometry, and 27.5-inch wheels, you’ll see rocks and roots as playthings rather than obstacles. With a lightweight carbon frame and the pedaling efficiency of the Split Pivot rear suspension system, Rustler can hustle up the trail just as well as it flows down. Shimano’s XT drivetrain makes shifting second nature, while the four-piston brakes bring everything to a halt when summoned. Rediscover your favorite trails with Rustler Carbon XT.
Every efficiency goes a long way when you’re going a long way. Spearfish Carbon XTR is full of touches designed to make tough rides easier, and easy rides more fun. The carbon frame soaks up impacts and provides superior power transfer. The Split Pivot suspension offers awesome pedaling efficiency. The Fox Float 34 SC Performance Elite FIT4 fork provides 120mm of travel up front, complemented by the 100mm Fox Float DPS Performance Elite shock out back. Shimano’s XTR components deliver shifting bliss, and the Reynolds C-Series carbon wheels cut rotational weight to save you precious energy. Spearfish Carbon XTR is a light and agile XC and endurance mountain machine for when every ounce of effort matters.
Spearfish was designed under a simple premise: that efficiency and precision result in speed. Whether pursuing an ultra-endurance record or working to keep the hard chargers off your back on local training laps, Spearfish’s efficient Split Pivot suspension design rewards the rider. The lightweight carbon frame and 100mm Fox Float DPS Performance Elite shock provide a platform for the ultimate progressive XC bike. Eliminate excuses with Spearfish.
When you want every advantage on your next gravel race or group ride, reach for the Salsa Warbird Carbon Apex 1. The Warbird traces its roots to being the first dedicated gravel race bike in the industry, and it shows no signs of giving up its lofty status. Built for all out speed and control on rough terrain, this machine will take your game up a notch or eight. - High-modulus carbon frame with rear thru-axle dropouts and rear rack compatibility via Rack-Lock seat collar (sold separately) - Class 5 vibration reduction system dramatically increases comfort - Waxwing carbon fork featuring a 12 x 100mm thru-axle, Three-Pack and fender mounts, mid-blade eyelets, dynamo cable routing, and flat-mount brake standard - Full-frame internal cable routing for Di2 and mechanical brakes - Toptube bag mounts on all sizes, 3 bottle mounts on sizes 56cm and up - Clearance for 40mm-travel suspension forks and internal dropper post routing (1x set-ups only)
Blackborow is Salsa’s "dream big" cargo fat bike, best paired with an unlimited imagination. The extended wheelbase and rear stays offer huge carrying capacity via abundant frame and fork braze-ons, supporting room for four full-sized panniers on the beautifully engineered rear rack. Top-shelf, double and triple-butted, heat-treated 6066-T6 aluminum tubing is used throughout the frame. Additionally, the tubing is strategically shaped and formed for additional stiffness and strength optimization in key stress areas. The front end is compatible with all our rigid fat bike forks and also fat-specific suspension forks. When Blackborow is sensibly loaded, the bike still feels well balanced and is a pleasure to ride on winding trails compared to other long-tail cargo bikes. Featuring carbon construction with an aluminum steerer, the Kingpin Fork is lightweight and durable, and features an amazing array of accessory bosses to maximize its capabilities: dual sets of Three-Pack bosses on each leg accept bottle cages or our Anything Cage accessories, lowrider mounts work with our Down Under front rack for a traditional touring setup, and internal dynamo hub wire routing keeps the front end clean for those upgrading to dyno hubs. Blackborow is compatible with 26 x 3.8–4.33" tires on up to 100mm rim, 27.5 x 3.25–4.0", or 29 x 2.3–3.0". The ability to run multiple wheel and tire sizes allows you to customize the experience and fine-tune the ride height as needed. A removable direct-mount front derailleur bracket allows for a clean 1x build, but it’s also compatible with 2x drivetrain setups. Plus, it’s got internal routing for a dropper post. Blackborow is all about new possibilities, and owners will find themselves able to merge an array of other interests into their two-wheeled adventures.
$139.99 - $149.99
If you're looking for some fun on one wheel, then Sun's Flat Top Classic Unicycle is just the ticket. The steel frame is tough and reliable, while the aluminum rim and grippy tire make for effortless pedaling. Plus, the wheel spins on durable sealed bearings, and the quick-release seatpost makes adjustments a snap.
The Big Fat Dummy is a long tail cargo bike that took a few too many doses of growth hormones. At first glance, you might say that Surly just put bigger tires on a Big Dummy. But if you said that, you'd actually be very wrong so just… don't. Think of Big Fat Dummy as more of a second or third cousin to Big Dummy rather than a brother. They share some of the same DNA and look sort of similar, but they're two very different bikes and really only interact when they both reach for the potato salad spoon at that family reunion that no one really wants to be at anyway. Now that that's out of the way, let's get down to the nitty gritty of what makes this hulking beast of a bike tick. Surly's goal with designing a cargo bike around fat tires was to create the most stable, stiff, and traction-laden ride possible while hauling a ton of stuff. Big Fat Dummy has a longer toptube and slacker headtube than its more svelt cousin giving it a nice, predictable, and stable ride. They also used thinner, lighter tubing to construct its cargo area so while it's an overall burlier bike, there's not much difference in weight. Big Fat Dummy accepts either 10mm or 12mm axles in the rear with a spacing of 190/197mm. That big ol' spacing equates to one thing: tire clearance for days. Big Fat Dummy maxes out at a massive 26 x 5.25" tire.* While that large of a tire provides the most traction and stability a bike can possibly offer, it's also a lot of rubber to push and might not be for everybody. Luckily, Big Fat Dummy is also a blast to ride with 3" tires too. It uses the same 100mm suspension-corrected fork as the Wednesday, meaning if you want to add a little squishy squishy to your ride, you can throw a Bluto on and let ‘er rip. If you intend to carry a passenger on your Big Fat Dummy, Surly requires use of their Dummy Rail Collars. These provide a secondary retention system for the rack, as well as stiffen the rack system. In addition, a stoker handlebar set up, found on tandem bicycles, is recommended as well. Make sure to check with seat post manufacturer for stoker handlebar compatibility. All Big Fat Dummy framesets and bikes ship with a Dummy deck, rails, bags, and the aforementioned Dummy Rail Collars so you can immediately start hauling cargo — human or otherwise. Big Fat Dummy is ready and willing to carry all sorts of crap — literally. It's already in use on an organic farm in Ecuador so it's likely that it's hauled some form of manure by now. *Using a 26 x 5.25" tire will cause some drivetrain limitations.
Vaya is designed to handle any road surface, from pavement to gravel to dirt. Whether you’re on a fast tour or just taking your time, this all road adventure and light touring bike is a versatile machine that feels great lightly loaded or unloaded. Build this frameset into the Vaya that meets YOUR needs. The frameset is the perfect foundation for a highly capable all-road or light touring bike. Whether your focus is fast and playful for blazing around fire roads or robust and stable for off-pavement exploration, Vaya's game.
The SCOTT Scale 950 features an ultralight Alloy Frame. FOX suspension, a Shimano 12-speed drivetrain and Syncros components create a durable and affordable hardtail designed for world-class speed. Syncros wheels and Maxxis Rekon Race tires yield a sturdy footing with plenty of trail-gripping tread, perfect for your next off-road outing. - Scale Alloy 6061 Boost Frame - FOX 32 Float Rhythm 100mm Fork - Shimano XT/SLX 12 Speed - Shimano MT-501 Hydraulic Disc Brakes - Syncros Rims - Maxxis Rekon Race Kevlar 29 x 2.25" Tires
The SCOTT Spark 960 has a super-light Alloy frame, as well as a front and rear fork/shock lockout allowing for a more optimized ride. It's lightweight, durable, affordable, and retains all the great geometry and ride of its Carbon cousins. Key Features - Spark Alloy SL Frame - RockShox Judy 130mm - X-Fusion Nude, 120mm, TwinLoc - Shimano XT-Deore 12 Speed Drivetrain - Shimano Disc Brakes - Syncros X-25 Rims - Maxxis Rekon Tires - Syncros Dropper Post and Parts
Everything you love about the Genius, but with a lower price point. The Genius 950 features RockShox and FOX suspension, a SRAM Eagle drivetrain, and Syncros components. Grab your bike, and get on the trail. Key Features - Genius Alloy SL Frame - RockShox Revelation RL3 150mm Fork - FOX Float, TwinLoc, 150mm Shock - Shimano XT-Deore 12 Speed Drivetrain - Shimano 4 Piston Disc Brakes - Syncros X-30S TR Rims - Maxxis Kevlar Tires - Syncros Dropper Post and Parts
With the Spark RC Team Issue AXS, take your World Championship dreams and start making them a reality. The fastest frame on the market, a wireless SRAM 12-speed groupset, and Syncros components combine to give you the perfect tool for the job, whether you're racing a local weekend race or toeing it up for your first World Cup. Key Features - Spark RC Carbon HMF Frame - RockShox SID Select RL3 110mm - FOX Nude EVOL, 100mm, TwinLoc - SRAM X01 AXS Eagle 12 Speed Drivetrain - Shimano XT Disc Brakes - Syncros Silverton 2.0 TR Wheels - Maxxis Rekon Race Kevlar Tires - Syncros Carbon Parts