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A premium water bottle that provides secure, leak-free hydration with a great in-hand feel and lasting freshness. The Voda Water Bottle gives you clean, consistent, at-the-ready hydration on any ride. It's made from recyclable, FDA-approved materials free from BPA, BPS, and Phthalates. Plus, it has a PopTop cap that's easy to open but offers secure closure and leak-free transport. Product details - Redesigned bottle and cap feature all-new materials for great feel and consistent closure - Free of BPA, BPS, and phthalates - PopTop's soft thermoplastic poppet is easy to open and close - Designed for easy entry/removal and secure retention - Bottle, cap, and removable seal are dishwasher safe and 100% recyclable - Long-lasting graphics resist scratching for a look that lasts - Manufactured in the USA

A premium water bottle that provides secure, leak-free hydration with a great in-hand feel and lasting freshness. The Voda Water Bottle gives you clean, consistent, at-the-ready hydration on any ride. It's made from recyclable, FDA-approved materials free from BPA, BPS, and Phthalates. Plus, it has a PopTop cap that's easy to open but offers secure closure and leak-free transport. Product details - Redesigned bottle and cap feature all-new materials for great feel and consistent closure - Free of BPA, BPS, and phthalates - PopTop's soft thermoplastic poppet is easy to open and close - Designed for easy entry/removal and secure retention - Bottle, cap, and removable seal are dishwasher safe and 100% recyclable - Long-lasting graphics resist scratching for a look that lasts - Manufactured in the USA

A premium insulated water bottle that lets you carry more cold water for lasting refreshment on long, hot rides. Colder for longer The only thing better than fresh water on a long, hot ride is cold fresh water—that stays cold. Voda Ice is an insulated water bottle that keeps your water cold for longer and comes in a game-changing 28-ounce size that lets you carry more of it. The premium Flow Top cap and No-Drop Grip Ring give this bottle a great in-hand feel with easy-squeeze hydration. Product details - A premium insulated bottle that keeps water cold, feels great in-hand, and provides leak-free closure - Form fit insulation layer keeps water cold twice as long as traditional bottle - Flow Top cap's heart valve and soft-touch poppet offers easy-squeeze hydration - Secure threaded cap with easy open-and-close poppet locks down leaks - No-Drop Grip Ring provides a grippy texture for confident grasp even when wet - Designed for easy cage entry and removal with secure retention - Optimized for use with a Side Load cage - USDA approved and free of BPAs and phthalates

Grips are a key point of contact between you and your bike. Comfortable grips are a must-have. Product details - Designed for use on kids' bikes without shifters - Set of two grips Specifications - Length: 107mm - Diameter: 22.2mm - End Type: Closed - Lock-on: No - Material: Kraton Rubber

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

Get back on the trail with a quality replacement hanger. - 30mm washer provides full coverage over ABP bearing seals - Included attachment hardware is reverse threaded - For specific compatibility concerns, please contact our Customer Service team - Hanger can be used on standard SRAM UDH set ups with 25mm washer Specifications: - Size: Rear drive side, Thru Axle - Mounting location: Rear drive side - Attachment: Thru axle nut

Dual Sport 1 is a hybrid bike in the true sense of the term: it excels on a variety of surfaces and can take you from smooth pavement to light off-road trails in a single ride. A lightweight frame, suspension fork, and all-terrain tires give Dual Sport 1 an incredible amount of capability on recreational fitness rides. It's right for you if... You want a single hybrid bike that's efficient on pavement and comfortable on rougher terrain and even light trails. You value confidence, stability, versatility, and performance on recreational rides and commutes that cover a variety of terrain. The tech you get A lightweight aluminum frame, a suspension fork with enough travel to take the edge off in rough terrain, a reliable drivetrain with 16 speeds and a wide range of gearing so you're never pedaling too hard or too soft, all-terrain tires that are grippy yet fast-rolling, and disc brakes for all-weather stopping power. The final word City bike, trail bike, your bike. Dual Sport 1 is an all-terrain hybrid bike built for adventure on or off the road, and ready to take you from week to weekend and back in comfortable, confident style. Why you'll love it - Why choose between the road and trail? Dual Sport is a versatile hybrid that excels on a variety of terrain - It's easy to accessorize your frame with racks, a kickstand, fenders, lights, and more! - The 2x drivetrain gives you all the gears you need and none you don’t - DuoTrap S compatibility makes it easy to wirelessly track your rides, so you can set goals and watch yourself reach them - Internal cable routing extends the life of your cables and adds to the bike's sleek look

FX 3 Disc is a versatile hybrid bike that's primed for performance, comfort, and utility. It has features like a lightweight aluminum frame, a carbon fork, a 1x drivetrain, and powerful disc brakes that stop in any weather. It's a commuting pro if you want it to be, or the perfect fitness companion on pavement and rail trails. It's right for you if... You're a commuter or fitness rider who’s having fun spending more time in the saddle. You want a great-looking bike that's versatile, comfortable, and built with quality parts that will perform on longer rides. The tech you get A lightweight aluminum frame, a carbon fork, hydraulic disc brakes for all-weather stopping power, a simple 1x drivetrain that ditches the front derailleur for less clutter and easier operation. Don't worry, the wide-range 11-46 cassette still gives you all the gears you need to conquer hills and crush flats. Plus, a vibration-absorbing handlebar and ergonomic grips for more comfort on every ride. The final word FX 3 Disc is a lightweight and fast fitness bike, commuter, and neighborhood cruiser all in one. For all the great things about this bike, the best tech upgrade is the simple yet-capable 1x10 drivetrain. Why you'll love it - The 1x drivetrain gives you all the gears you need and none you don’t - It's easy to accessorize with a MIK rear rack, a kickstand, fenders, lights, and more! - It's versatile and does whatever you want it to do, whether that's riding for fitness, commuting, or cruising to the farmer's market to pick up groceries - The cables are routed internally, which protects them from the elements and adds to the bike's sleek look - You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S

High-quality replacement skewer to keep the bike moving. - OE Replacement skewers - Available in a variety of OE replacement lengths - Measure hub width and skewer length to ensure proper compatibility

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

Genuine replacement parts Get your bike back on the trail with a fresh set of pedals. Upgrade or refresh your ride. - Nylon body and low profile - Integrated reflectors can be removed - Select colors available - 9/16" spindle threading

This stainless steel, insulated iteration of the well-loved Podium bottle keeps your hydration cold without holding you back. Keep your chill When you're charging uphill, you need hydration that's close at hand but stays out of your way. The Podium® Steel 22oz is made from premium 18/8 stainless steel with a sleek design and expanded capacity so you can carry more water without ever slowing down. The double-wall vacuum insulation keeps your beverages cold for your entire ride, and the lightweight construction strikes the perfect balance between agility and reliability. Product details: - Made with safer chemicals, designed to preserve resources and diminish disposables - Double-Wall Vacuum Insulation - Temperature defying chill - Lightweight Design - So lightweight you might forget it's there - Hours Cold - 18 hours - No Squeeze Required - Just grab, lift, and sip - 18/8 Stainless Steel - Tough as nails, but doesn't taste like them - High-Flow Cap - Logic-defying sipping ease - Leakproof Lockout - No spills, all thrills Features: Easy Drinking Stay focused on crushing your ride – not your bottle. Podium's high-flow cap means there's no squeezing necessary to get maximum hydration. Just grab, lift, and sip! Tired of plastic? Ditch your plastic water bottles for the CamelBak stainless steel and titanium bottles that are built to stand the test of time. Stainless steel vs. titanium Both bottles will be long-lasting and easy to clean, so which do you choose? Easy! The titanium bottles are lighter weight and the stainless steel bottles offer more durability while keeping your water colder for longer.

FX 3 Disc Stagger is a versatile hybrid bike made for performance, comfort, and utility. It has a lightweight aluminum frame, a classic step-through geometry that's easier to mount and dismount, a carbon fork, a performance 1x drivetrain, and powerful disc brakes that stop in any weather. It's right for you if... You're a commuter or fitness rider who’s having fun spending more time in the saddle. You want a great-looking bike that's versatile, comfortable, and built with quality parts that will perform on longer rides. The tech you get A lightweight aluminum frame with step-through geometry, a carbon fork, hydraulic disc brakes for all-weather stopping power, and a simple 1x drivetrain that ditches the front derailleur for less clutter and easier operation. Don't worry, the wide-range 11-46 cassette still gives you all the gears you need to conquer hills and crush flats. Plus, it's decked out with ride-ready accessories, puncture-resistant tires, and a vibration-absorbing handlebar, and ergonomic grips. The final word FX 3 Disc Stagger is a fast, versatile fitness bike that's perfect for commutes, workouts, and cruising around town. It's a great everyday bike, but what really makes it stand out is the performance parts like the upgraded 1x10 drivetrain and comfort features that feel great on long rides. Why you'll love it - The 1x drivetrain gives you all the gears you need and none you don’t - The step-through frame makes it easy to hop on and go and hop off when your ride is over - It's versatile and does whatever you want it to do, whether that's riding for fitness, commuting, or cruising to the farmer's market to pick up groceries - It's easy to accessorize with racks, a kickstand, fenders, lights, and fitness devices to track your ride data when you add DuoTrap S - The cables are routed internally, which protects them from the elements and adds to the bike's sleek look

Marlin 7 is where race-worthy mountain bikes begin. The smooth, lightweight RockShox fork and upgraded parts make this model the best choice for new riders who want a fast cross country hardtail that will hold its own against our higher-end race bikes. It's right for you if... - You're new to the trail but have serious singletrack aspirations, and want a race-worthy mountain bike with upgrades on the parts that make a big difference in performance, like a higher quality suspension fork and a wide-range 1x drivetrain. The tech you get - A light frame with internal shift cable and brake hose cable routing, a smoother-feeling RockShox Judy fork with a lockout, Shimano hydraulic disc brakes, and a simple 1x drivetrain that ditches the front derailleur for less clutter and easier operation. Don't worry, with the wide-range 11-46 cassette, you still get all the gears you need for clawing up climbs and blazing down descents. The final word - The RockShox suspension, wide range of gearing, and quality parts make it the best choice in the Marlin lineup for new mountain bikers who know they want a serious bike for their money. It’s fully capable of taking on off-road marathon rides and XC races. Why you'll love it - This is one of our most popular bikes for good reason. You get all the value, plus all the versatility—it's a totally race-worthy mountain bike, with rear rack mounts if you use it for commuting too - It's really fun to ride, and feels like a much more expensive mountain bike - Great suspension at an even better price - The 1x drivetrain gives you all the gears you need and none you don’t - 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 Wheel size: Size X-Small – Small: 27.5-inch Sizes Medium – XX-Large: 29-inch

Marlin 8 is a race-worthy mountain bike that won't break the bank. The smooth, lightweight RockShox fork, tubeless ready wheels, and wide-range 1x drivetrain make this model the best choice for new riders who want a fast cross country hardtail that will hold its own against our higher-end race bikes. It's right for you if... You want a race-ready mountain bike with upgrades on the parts that make a big difference in performance, like a lighter, higher quality suspension fork, wide-range 1x drivetrain, and tubeless ready wheels. The tech you get A light frame with internal cable routing, a smoother-feeling RockShox Judy Silver fork with a Solo Air spring and TurnKey hydraulic lockout, Shimano hydraulic disc brakes, tubeless ready Bontrager Kovee wheels, and a simple 1x12 drivetrain that ditches the front derailleur for less clutter and easier operation. The wide-range 11-50 cassette gives you all the gears you need for clawing up climbs and blazing down descents. The final word The tubeless ready wheels, RockShox suspension, wide range of gearing, and quality parts make it an awesome choice for new mountain bikers who know they want a serious bike for their money. It's fully capable of taking on big trail adventures and XC races. Why you'll love it - This is one of our most popular bikes for good reason. You get all the value, plus all the versatility—it's a totally race-worthy mountain bike with rear rack mounts if you use it for commuting too - The RockShox fork's Solo Air spring can easily be adjusted for a specific rider weight, and it's lighter than a coil spring - Setting your wheels up tubeless reduces the overall weight of your bike and the chances you'll get a flat - The 1x drivetrain gives you all the gears you need and none you don't - 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 Wheel size: - Size XX-Small: 26-inch - Sizes X-Small – Small: 27.5-inch - Sizes Medium – X-Large: 29-inch

This titanium, insulated iteration of the well-loved Podium bottle elevates your everyday bottle while keeping your hydration cold. Ice your competition Push the envelope without tipping the scales. Weighing in at just 240 grams, the Podium® Titanium bike bottle is where form and function meet, combining unparalleled strength and feather-light agility to help you find your flow even faster. Made from premium, vacuum-insulated titanium, it's built from the ground up to meet the demands of discerning riders who want to curate their kit down to the very last detail. Product details: - Made with safer chemicals, designed to preserve resources and diminish disposables - Double-Wall Vacuum Insulation - Temperature defying chill - 240 Grams - Ultra lightweight design—we're serious - Hours Cold - 7 hours - No Squeeze Required - Just grab, lift, and sip - Titanium Body Material - Lightweight meets durability - High-Flow Cap - Logic-defying sipping ease - Leakproof Lockout - No spills, all thrills Features: Easy Drinking Stay focused on crushing your ride – not your bottle. Podium's high-flow cap means there's no squeezing necessary to get maximum hydration. Just grab, lift, and sip! Tired of plastic? Ditch your plastic water bottles for the CamelBak stainless steel and titanium bottles that are built to stand the test of time. Stainless steel vs. titanium Both bottles will be long-lasting and easy to clean, so which do you choose? Easy! The titanium bottles are lighter weight and the stainless steel bottles offer more durability while keeping you water colder for longer.

Upgrade or refresh your bike. - Original replacement wheel - Does not include skewer, reflector, rim strip, valve, or owner's manual

It's right for you if... You're serious about speed and performance, and you want the advantage of lightweight carbon wheels and an electronic drivetrain that's incredibly fast and consistent in all conditions. You also prefer the all-weather stopping power hydraulic disc brakes provide. The tech you get A 500 Series OCLV Carbon frame and fork with Kammtail Virtual Foil tubes that cut through the wind. It's built with a full Shimano Ultegra Di2 2x11 electronic groupset, a road-smoothing IsoSpeed decoupler, and a pair of Tubeless Ready Bontrager Aeolus Pro 5 OCLV carbon wheels, plus powerful hydraulic disc brakes and a Madone aero seatmast cap. The final word You get the free speed, aerodynamic advantage, and superior ride quality of our ultimate race bike, plus the precision of an electronic drivetrain. Ultegra Di2 delivers quick, reliable shifts—and that really matters when you're sprinting for the line. Why you'll love it - Never miss a shift again with the fast, reliable Shimano Ultegra Di2 electronic drivetrain - Adjustable Top Tube IsoSpeed lets you adjust compliance to your preference, and it's damped with an elastomer so it rebounds in a smooth, controlled, stable motion - All the aero advantages of Madone, plus the added capability to clip on aero bars for triathlons and time trials - Disc brakes offer better braking performance and extra clearance for wider, more stable tires - The Madone seatpost has an integrated mount for the Bontrager Flare RT tail light

Key features - Reflector mount for first and second generation Speed Concept seatposts - To use with a Bontrager Flare, use with the Bontrager Flare Horizontal Mounting Kit (sold separately)

Tastefully display your love for the Trek Factory Racing mountain bike team while you stay cool and dry in this 3/4 sleeve tech t-shirt. Designed with the right fit and cut for optimum comfort and style for riding and relaxing on or off the trails. This soft, cotton/poly blend shirt features moisture-wicking and quick-drying fabrics combined with the bold aesthetic reserved only for the riders of the Trek Factory Racing Team. - 85% Polyester / 15% Cotton Dri-release jersey fabric - Moisture-wicking performance fabrics - Quick drying, up to 4x faster than standard cotton - FreshGuard anti-odor treatment - Soft hand screen-print graphic - Modern Fit Specifications: - Fiber content: 85% Polyester / 15% Cotton - Material: Knit - Sleeve length: 3/4 Sleeve

This classic bar tape combines the traditional feel of natural cork with the vibration damping power of gel for a comfortable ride feel and a clean aesthetic that will never go out of style. It's easy to install and comes with Bontrager finishing strips and bar end plugs. - Gel tape with natural cork feel - Ideal stretch for quick and easy installation - Inner gel strip for extra comfort - Finishing strips and reflective Bontrager bar end plugs included - Non-adhesive backing

Wear it and believe. The Solstice is proof you don't have to spend a lot of money to get a great fitting, easy-to-use cycling helmet designed to keep you protected during all your bike riding adventures. Key features - Intuitive, one-handed Headmaster fit system adjusts height and circumference - Built-in and removable visor options give you two choices for constant coverage - In-mold composite skeleton increases helmet integrity for larger vent variations - LockDown dividers make helmet strap management clean and are easy to adjust - Internal, recessed channels move airflow over your head to stay cool and dry - Reflective elements on back of helmet for enhanced visibility - Soft, comfortable, moisture-wicking, and washable helmet pads - Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership

High-quality replacement headset bearings are smooth like butter. - Sealed cartridge bearing for long life - Durable steel bearing housing

World Cup Proven - X2 2-position Open/Firm lever retains high and low speed compression adjustment - High- and low-speed compression and high- and low-speed rebound adjustment - Advanced RVS damping system provides more tunability - High oil flow improves damping control and consistency X2 ARCHITECTURE Less friction, more flow Fueled by years of RAD development, X2 hits the sweet spot with its a linear damping profile, revised oil flow, and redesigned seals on DHX2 and FLOAT X2 shocks. The wide adjustment range gives riders the support and grip that the trail demands, as well as a more plush and open feel in the initial travel. RVS Rod Valve System The Rod Valve System (RVS) provides a more seamless damping transition when absorbing small to large impacts, resulting in faster system response, more control, and less harshness.

Our Most Advanced Trail Shock Ever - X2 small bump sensitivity meets an improved DPS adjustment range - Recirculating oil damper design gives riders better control - One-piece EVOL air sleeve improves responsiveness and sensitivity - Three position lever with adjustable Open mode offers 10 clicks to fine-tune compression DUAL PISTON SYSTEM Dual Piston System (DPS) features three on-the-fly settings—Open, Medium, and Firm—to allow riders to adapt to a wide variety of terrain (Remote model is two position—Open/Firm). The valve design provides full lockout without compromising bump compliance, ride control, and efficiency. Factory Series DPX2 shocks (non-remote models) feature an additional 10 clicks of compression adjustability in the Open mode. X2 ARCHITECTURE Taking the oil flow architecture from the FLOAT X2 and DHX2 designs, the DPX2 is the X2’s little brother. This system creates low hysteresis, quick hydraulic response, better sensitivity and improved heat dissipation. It also provides a wide, usable tuning range and checked low-speed compression and rebound flow paths for better tuning and consistent performance. EVOL Air Transfer Port System Our EVOL linear spring curve gives forks and shocks plushness off the top, extra mid-stroke support, and more tunable bottom-out progression, allowing riders to tap into the ideal pairing of front and rear-end feel. EVOL Air Sleeve The lightweight one-piece EVOL air sleeve was designed for each shock size (imperial, trunnion, and metric) to balance internal forces, and has maximized bushing overlap to reduce friction during "real world" forces like side-loading and twisting. GENUINE KASHIMA COAT Kashima's distinctive gold color is backed by its high performance attributes—properties that provide an exceptionally smooth feel and extreme durability.

The Fast Trak Control 2Bliss Ready T5 has become synonymous with fast and lightweight tires that are able to handle the most technical courses and the most grueling conditions. This model redefines what was thought possible with a cross-country tread design. Our Block-In-Block design uses a taller adaptable inner block to pierce the ground and claw for traction. The larger outer structure supports the inner block for additional speed, traction, support and stable handling. Adding to this, the Fast Trak profile and knob spacing has been optimized for a wide variety of internal rim widths. The Control casing is our light and durable do it all XC construction. To top off this build we use our fastest rolling, race-ready T5 compound with excellent wear and tear protection. - Casing: 60 TPI, light and durable do-it-all XC construction - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON T5 - 29 x 2.20", PSI 25-50, approximate weight 625g - 29 x 2.35", PSI 25-50, approximate weight 670g

The Fast Trak Control 2Bliss Ready T7 has become synonymous with fast and lightweight tires that are able to handle the most technical courses and the most grueling conditions. This model redefines what was thought possible with a cross-country tread design. Our Block-In-Block design uses a taller adaptable inner block to pierce the ground and claw for traction. The larger outer structure supports the inner block for additional speed, traction, support and stable handling. Adding to this, the Fast Trak profile and knob spacing has been optimized for a wide variety of internal rim widths. The Control casing is our light and durable do it all XC construction. To top off this build we use our T7 compound to maximize grip and damping. - Casing: 60 TPI, light and durable do it all XC construction - Bead: Foldable - Butyl wrapped bead = 2Bliss Ready - Compound: GRIPTON T7 - 29 x 2.35", PSI 25-50, approximate weight 715g

Upgrade or refresh your bike. GENUINE REPLACEMENT PARTS When it's time to refresh your trusty bike, Trek Genuine Replacement Parts have you covered. PRODUCT DETAILS - Original equipment replacement 24" rim brake wheels for Trek Kids bikes - Does not include skewer, reflector, rim strip, valve, or owner's manual

Replacement headset bearings from FSA. - Compatible with most Trek MTB integrated headset systems - Sealed bearing for long life - Compatible with Knock Block Headsets

Replacement headset bearings from FSA. - Compatible with most Trek MTB integrated headset systems - Sealed bearing for long life - Compatible with Knock Block Headsets