29-Inch Wheel (29ers)

Cannondale's 29'er 4 is a great bike for big-wheeled, off-road adventure. The frame's large-diameter, thin-wall aluminum tubes maximize stiffness and minimize weight so you can climb quickly and easily. And you'll roll over everything in your path with the 29-inch wheels with Shimano hubs. An RST fork leads the way and soaks up bumps with 80mm of travel and Tektro disc brakes provide serious stopping power so you can ride on the line, not over it. Plus, the Shimano Deore drivetrain offers a smooth, easy gear no matter what terrain you're conquering.

Want the steamroller ability of a 29er and the quickness of a 26er? Jamis' Dakar SixFifty B1 is just right. Stability, traction, and roll-over-everything momentum come from the 29er side and snappy acceleration and quick handling comes from the 26er side. The 650b wheel size is the ideal balance. The unique wheels are hung from Jamis' aluminum frame with 130mm of travel from their proven mp3 suspension. Soaking up the bumps out front is a White Brothers fork with 20mm through axle for excellent stiffness and steering accuracy. And with always on-point components such as a Shimano drivetrain, Hayes hydraulic disc brakes, Kenda Nevegal tires and Ritchey hardgoods, you'll surely have a great ride every ride.

Want the steamroller ability of a 29er and the quickness of a 26er? Jamis' Dakar SixFifty B1 is just right. Stability, traction, and roll-over-everything momentum come from the 29er side and snappy acceleration and quick handling comes from the 26er side. The 650b wheel size is the ideal balance. The unique American Classic wheels are hung from Jamis' aluminum frame with 130mm of travel from their proven mp3 suspension. Soaking up the bumps out front is a White Brothers fork with 20mm through axle for excellent stiffness and steering accuracy. And with the pro-level SRAM X.0 drivetrain, Avid disc brakes, Kenda Nevegal tires and Ritchey hardgoods you'll surely have a great ride every ride.

Jamis' Dakota D29 Pro is a speed machine, pure and simple. Its carbon frame features size specific tubing, a BB30 bottom bracket and a uniquely layered carbon construction, all of which keep weight low and ride quality high. Taming the trail, RockShox' Reba fork with 100mm of travel lets those big hoops navigate technical trails like a GPS. Another advantage of 29ers is their ability to hold momentum. You'll notice how the WTB wheels keep rolling over rocks that used to slow you down. Plus, you get a reliable Shimano drivetrain, powerful Avid discs and a host of aluminum components from Ritchey. It all adds up to one blazing-fast ride.

Jamis' Dakota D29 Team is a speed machine, pure and simple. Its carbon frame features size specific tubing, a BB30 bottom bracket and a uniquely layered carbon construction, all of which keep weight low and ride quality high. Taming the trail, the Fox fork with 100mm of travel lets those big hoops navigate technical trails like a GPS. Another advantage of 29ers is their ability to hold momentum. You'll notice how the pro-level Mavic C29ssmax wheels keep rolling over rocks that used to slow you down. Plus, you get an always crisp SRAM X.0 drivetrain, powerful Avid discs and a host of carbon components from Ritchey. It all adds up to one blazing-fast ride.

Big wheels, big speed; Jamis' Dragon 29'er gives you both. It boasts Reynolds' legendary 853 chromoly frame that is light, buttery smooth and exceptionally durable for a world-class ride. The big American Classic hoops are lightweight, and combined with the Geax tires they easily roll over trail obstacles, offer a large, grippy contact patch and hold their speed well over rolling terrain. Plus, you get RockShox' top-notch Reba fork, a flawless Shimano XT drivetrain, powerful Avid discs and a host of aluminum components from Ritchey. It all adds up to one blazing-fast ride.

Singlespeed. 29er. Steel hardtail. If you prefer to rock a fast simple machine, Jamis has your back with the Dragon One. It boasts a Reynolds chromoly frame that is light, buttery smooth and exceptionally durable for a world-class ride. The big WTB rims and Geax tires easily roll over trail obstacles, offer a large, grippy contact patch and hold their speed well- which is ideal with the fuss-free singlespeed set-up. Plus, you get RockShox' reliable Tora fork, powerful Avid disc brakes and a host of components from Ritchey.

With increased traction and the ability to roll over the trail more easily, Jamis' Exile 29'er will have you riding faster and farther than ever! The Kinesis Superlight 6061-aluminum frame offers incredible out-of-the saddle acceleration and precise cornering while the 100mm-travel RockShox fork is dialed in for 29-inch wheels and tames bumps with ease. Add to that the sweet-shifting 24-speed Shimano drivetrain and all-conditions power of Tektro disc brakes, and you've got a big-wheeled machine ready for anything.

With increased traction and the ability to roll over the trail more easily, Jamis' Exile 29'er will have you riding faster and farther than ever! The Kinesis Superlight 6061-aluminum frame offers incredible out-of-the saddle acceleration and precise cornering while the 100mm-travel RockShox fork is dialed in for 29-inch wheels and tames bumps with ease. Add to that the sweet-shifting 27-speed Shimano drivetrain and all-conditions power of Shimano hydraulic disc brakes, and you've got a big-wheeled machine ready for anything.

The Aggressor Sport is simultaneously off-road friendly and lightweight, making it perfect for everyday recreational use. It features X Guides to keep cables tucked away and tidy. Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch

Marlin 4 is the gateway mountain bike that will take you from rail trails to singletrack. It's ideal for riders who want a mountain bike with knobby tires that can double as a rugged commuter. Disc brakes, front suspension, Shimano 14-speed shifting, and mounts for a rack and fenders make this a great bike for trail riders and campus commuters alike. IT'S RIGHT FOR YOU IF… You want an introductory mountain bike at an incredible price, but also want a commuter that's rugged enough to hop curbs on the way to class. THE TECH YOU GET A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, trustworthy 14-speed Shimano shifting with a wide range of gearing so you always have the right gear for your terrain, powerful mechanical disc brakes, and a suspension fork that takes the edge off bumps and rough terrain. THE FINAL WORD Marlin is made for any adventure. The rack and fender mounts make it a great choice for commuters who want to get a little rad on the way to class or the grocery store. WHY YOU'LL LOVE IT - Marlin Gen 2 is ready to roll with easy to use features that help you get the best bang for your buck - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Like every model in the Marlin family, it's backed by Trek's lifetime warranty Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch

Marlin 5 is a trail-worthy daily rider that's perfectly suited for everyday adventures, on and off the trail. A suspension fork, 2x8 drivetrain, and mounts for a rack and kickstand make it an ideal choice for new trail riders or anyone looking for a comfortable, stable commuter with the ruggedness of a real mountain bike. It's right for you if... You're new to the trail, and you're looking for a real mountain bike that doubles as a commuter—and you want it all at an exceptional value. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, 2x8 drivetrain, a wide range of gearing so you always have the right gear for your terrain, powerful hydraulic disc brakes, and a terrain-smoothing suspension fork with a lockout. The final word Marlin 5 is a great ride for all your adventures. But it's also versatile, and Marlin 5 is a popular ride on college campuses, because the rack and kickstand mounts make it easy to accessorize and haul a load. Why you'll love it - It's a real mountain bike that's also perfectly suited to daily commutes, rides around campus, or just getting from A to B on any surface - Smaller frame sizes (XXS, XS, and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XXS through S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Rack and kickstand mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Like every model in the Marlin family, it's backed by Trek's lifetime warranty Wheel size: - Size XX-Small: 26-inch - Sizes X-Small – Small: 27.5-inch - Sizes Medium – XX-Large: 29-inch

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 M3030 suspension fork, 75mm travel. - 7-speed drivetrain with double chainring cranks/ Tektro mechanical 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

Marlin 4 is the perfect gateway to trail riding. It's ideal for new riders who want a mountain bike with knobby tires that can double as a rugged commuter. Disc brakes, front suspension, 21 speeds, and mounts for a rack and fenders make this a great bike for new trail riders and campus commuters alike. It's right for you if... You want an introductory mountain bike at an incredible price but also want a commuter that's rugged enough to hop curbs on the way to class. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, 21 speeds, a wide range of gearing so you always have the right gear for your terrain, powerful mechanical disc brakes, and a suspension fork that takes the edge off bumps and rough terrain. The final word Marlin is made for any adventure. The rack and fender mounts make it a great choice for commuters who want to get a little rad on the way to class or the grocery store. Why you'll love it - It's a real mountain bike that's also perfectly suited to daily commutes, rides around campus, or just getting from A to B on any surface - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Smaller frame sizes (XS and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XS and S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Like every model in the Marlin family, it's backed by Trek's lifetime warranty Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – XX-Large: 29-inch

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

A mountain bike built to raise your game and ignite a passion for the trail. Designed for the mountains and ready for anything.

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 M3030 suspension fork, 75mm travel - 7-speed drivetrain w/ double chainring cranks / Tektro mechanical disc brakes

The SCOTT Contessa Active 60 series features a super light Alloy Frame. The series comes fully equipped with a Suntour fork, perfect for those always on the go. Key Features - Active 700/900 Alloy Frame - Suntour XCE28 100mm - Shimano Tourney 21 Speed Drivetrain - Tektro Mech. Disc Brakes - Kenda Booster Tires Wheel size: Sizes X-Small – Small: 27.5-inch Sizes Medium – Large: 29-inch

Marlin 6 is a cross country mountain bike built to give you an efficient off-road ride with a suspension fork that locks out, and a simple 1x drivetrain. It's made for mountain biking, but it's also equipped with features like rack and kickstand mounts that make it a great choice for adventurous daily commutes. It's right for you if... You're testing the waters of off-road riding and want a real mountain bike at a great value with a wide range of gears to cover more ground on the road and trail. The tech you get A lightweight aluminum frame with internal routing to protect your cables and add to the bike's sleek look, powerful hydraulic disc brakes, and a simple 1x10 Shimano drivetrain that ditches the front derailleur for less clutter and easier operation. The wide-range cassette still gives you all the gears you need for big climbs and steep descents. Plus, a suspension fork with a lever that lets you easily lock the suspension so you don't waste energy on smooth terrain. The final word Marlin 6 gives you upgrades you'll notice on every ride, like the smooth, simple shifting Shimano drivetrain. Extra-strong, double-walled rims and powerful hydraulic disc brakes give you durability and stopping power for your most rugged adventures on the trail, in town, and everywhere in between. Why you'll love it - The 1x drivetrain gives you all the gears you need and none you don't - Smaller frame sizes (XXS, XS, and S) have short-reach brake levers that make it easier and more comfortable for riders with smaller hands to brake confidently - Marlin models in XXS through S frame sizes have a curved top tube and a lower standover height that makes it easier for smaller riders to mount and dismount - Rack and kickstand mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Like every model in the Marlin family, it's backed by Trek's lifetime warranty

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. 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 XCT suspension fork, 100mm travel -Shimano 8-speed shifting w/double chainring crank / Shimano hydraulic disc brakes Wheel size: - Sizes X-Small – Small: 27.5-inch - Sizes Medium – Large: 29-inch

The SCOTT Aspect 970 is a mountain hardtail that is designed to be light, efficient, and reasonably priced. Featuring disc brakes and Syncros components, this is the perfect bike for the novice or budget-conscious mountain biker. Key Features - Aspect 700/900 Alloy Frame - Suntour XCE28 100mm - Shimano Tourney 21 Speed Drivetrain - Tektro Mech. Disc Brakes - Kenda Booster Tires

The SCOTT Aspect 970 is a hardtail mountain bike that is designed to be light, efficient, and reasonably priced. Featuring disc brakes and Syncros components, this is the perfect bike for the novice or budget conscious mountain biker. Key Features: - Aspect 700/900 Alloy Frame - Suntour XCE28 100mm Fork - Shimano Tourney 21 Speed - Tektro Mechanical Disc Brakes - Kenda Booster

Marlin 6 is the perfect ride for progressing your skills on the trails. Its updated slacker frame geometry makes it easier to control on descents while the suspension fork takes the edge off bumpy trails. Integrated rack and kickstand mounts make it easy to add accessories to this versatile steed. It's right for you if... You want a trail bike that's dialed for building confidence on the dirt, and versatile enough for commuting to work or school. The tech you get A lightweight aluminum frame with modern trail riding geometry and internal routing that keeps cables protected and keep the bike looking sleek. A front suspension fork that cushions rocks, roots, and bumps in the trail, 10-speed fuss-free Shimano Deore shifting, and the serious stopping power of hydraulic disc brakes. The final word Marlin 6 is an ideal trail bike for riders who want to progress on the trail, and want a bike that can keep them rolling off of the trail, too. Why you'll love it - You get real-deal modern mountain bike geometry that keeps handling confident when you're on singletrack, but it's versatile enough for use on roads and bike paths, too - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - The new Thru-Skew system is safer, simpler, and stronger, plus it makes removing the rear wheel for flat fixes a cinch. - Internal routing makes it easy to add a dropper post that lets you lower you saddle on the fly for more confident descending - Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount Features: Expanded size range With 8 different sizes, Marlin has a bike made to fit every rider. Each frame is equipped with smart wheel sizing, with XXS frames rolling on 26" wheels, and wheel sizes increasing proportionally along with frame sizes, so every rider gets the fit they need. Trail-ready, Upgrade-ready The secret to Marlin's popularity is a real trail-savvy mountain bike frame that's upgrade compatible, so it can grow with you as you take on bigger trails and tougher features. Roll stronger with Thru Skew Goodbye open dropouts. The Thru Skewer is a better, stronger, more precisely aligned rear wheel retention system that keeps your wheel more secure than quick-release skewers while still using the standard 135mm rear hub spacing.

The SCOTT Contessa Active 50 is a hardtail mountain bike that features a light Alloy Frame. The series comes fully equipped with a Suntour fork, perfect for those always on the go. Key Features: - Active 700/900 Alloy Frame - Suntour XCE28 100mm Fork - Shimano TX800, 16 Speed - Tektro Hydraulic Disc Brakes - Kenda Booster Tires Wheel size: Sizes X-Small – Small: 27.5-inch Size Medium: 29-inch

The SCOTT Aspect 950 is a hardtail mountain bike that is designed to be light, efficient, and reasonably priced. Featuring disc brakes and Syncros components, this is the perfect bike for the novice or budget conscious mountain biker. Key Features: - Aspect 700/900 alloy Frame - Suntour XCT30-HLO 100mm Fork - Shimano Altus, 18 Speed - Tektro Hydraulic Disc Brakes - Kenda Booster Tires

Marlin 6 is the perfect ride for progressing your skills on the trails. Its updated slacker frame geometry makes it easier to control on descents while the upgraded suspension fork takes the edge off bumpy trails. Integrated rack and kickstand mounts make it easy to add accessories to this versatile steed. It's right for you if... You want a trail bike that's dialed for building confidence on the dirt, and versatile enough for commuting to work or school. The tech you get A lightweight aluminum frame with modern trail riding geometry and internal routing that keeps cables protected and keep the bike looking sleek. A 100mm RockShox Judy front suspension fork that cushions rocks, roots, and bumps in the trail, 10-speed fuss-free Shimano CUES shifting, and the serious stopping power of hydraulic disc brakes. The final word Marlin 6 is an ideal trail bike for riders who want to progress on the dirt and want a bike that can keep them rolling off of the trail, too. Why you'll love it - Marlin Gen 3 gives you serious trail capability, with big tire clearance and slack, confidence-boosting geometry that keeps you stable from singletrack to city - Its RockShox fork gives you 100mm of suspension for turning rocks and roots in the trail into smooth-sailing - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Internal routing makes it easy to add a dropper post that lets you lower your saddle on the fly for more confident descending - Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount Features: Will my bike have a curved top tube? Smaller frames have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frame sizes have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height. Fit for every rider Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control. High-tech, high-value Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements. Shimano CUES Inspired by rider demand for trouble-free drivetrain longevity and performance, Shimano CUES offers a new foundation for versatility and durability across a range of both electric and standard bikes. CUES features Shimano’s new LINKGLIDE drivetrain technology for significantly increased life on wear items like chains, cassettes, and chainrings. Shimano LINKGLIDE LINKGLIDE technology has been specifically engineered for incredible durability while still delivering smooth and decisive shifting – along with a great pedaling experience. Available exclusively on Shimano CUES drivetrains. Upgrade your pedals and love your bike more Pedals are two of the five touchpoints that connect you with your bike, and even though this bike comes with a pair, upgrading to pedals that boost control and grip will greatly improve your ride. See the pedal guide and find the best pedals for your riding style. We recommend flat pedals for simple versatility. Wheel size: - Size XX-Small: 26-inch - Sizes X-Small – Small: 27.5-inch - Sizes Medium – XX-Large: 29-inch

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 - microSHIFT Advent X 10-speed shifting / Shimano hydraulic disc brakes

The SCOTT Contessa Active 40 is a hardtail mountain bike that features a light alloy frame. The series comes fully equipped with a Suntour fork, perfect for those always on the go. Key Features: - Active 700/900 Alloy Frame - Suntour XCT30-HLO 100mm Fork - Shimano Altus, 18-Speed - Tektro Hydraulic Disc Brakes - Kenda Booster Tires Wheel size: Sizes X-Small – Small: 27.5-inch Size Medium: 29-inch

Marlin 7 is your best friend on the trail and wherever else you roll thanks to its confidence-boosting trail geometry. It finds the perfect balance between price and performance with an upgraded RockShox suspension fork that makes quick work of rocks and bumps in your path, and precise Shimano Deore shifting. It's right for you if... You want a go-anywhere trail bike that's got upgrades where it matters most, but won't break the bank. You want to build skills on the trail, and need a bike with confidence-inspiring geometry. The tech you get A lightweight aluminum frame with modern trail riding geometry and internal routing that keeps cables protected and keep the bike looking sleek. An upgraded RockShox suspension fork that smooths out rowdy trails, 10-speed fuss-free Shimano Deore shifting, and the serious stopping power of hydraulic disc brakes. The final word Marlin 7 is the go-to trail bike for those wanting to build skills on the singletrack and get the right bang for the buck with upgraded suspension and confidence-inspiring geometry. Why you'll love it - You get real-deal modern mountain bike geometry that keeps handling confident when you're on singletrack, but it's versatile enough for use on roads and bike paths, too - Its upgraded RockShox fork gives you 100mm of suspension for turning rocks and roots in the trail into smooth-sailing - Rack and fender mounts make it easy to accessorize, so your mountain bike can double as a rugged commuter - Internal routing makes it easy to add a dropper post that lets you lower you saddle on the fly for more confident descending - Marlin models in sizes XXS and XS have a curved top tube and lower standover height that makes it easier for smaller riders to mount and dismount Features: Expanded size range With 8 different sizes, Marlin has a bike made to fit every rider. Each frame is equipped with smart wheel sizing, with XXS frames rolling on 26" wheels, and wheel sizes increasing proportionally along with frame sizes, so every rider gets the fit they need. Trail-ready, Upgrade-ready The secret to Marlin's popularity is a real trail-savvy mountain bike frame that's upgrade compatible, so it can grow with you as you take on bigger trails and tougher features. Roll stronger with Thru Skew Goodbye open dropouts. The Thru Skewer is a better, stronger, more precisely aligned rear wheel retention system that keeps your wheel more secure than quick-release skewers while still using the standard 135mm rear hub spacing.