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Accessories

$125.00 $329.99 62% Off
Take your ride inside with Tacx Boost. You won't need external power to use this trainer, thanks to a forceful magnetic brake that allows you to directly apply resistance or lighten it. Resistance can be controlled with a lever on the handlebar. The setup is easy—with just two simple clicks you mount your bike and you are ready to ride. The Boost bundle includes a speed sensor so you can track how far and how fast you're riding indoors and train with your favorite app. SIMPLE SETUP With just two simple clicks, you'll be ready to ride. SMALL BUT STABLE This indoor trainer has a small footprint, 675 x 650 mm (26.6" x 25.6"), but provides a sturdy ride. EASY TO STORE Multifunctional front wheel support serves as a handle to carry the trainer and ensures a natural cycling position. MAGNETIC BRAKE You won't need external power to use this trainer, thanks to a forceful magnetic brake that allows you to directly apply resistance or lighten it. RESISTANCE CONTROL A simple lever on your handlebar lets you control the resistance; 10 levels, up to 1,050 watts. REALISTIC RIDE FEEL An actual flywheel generates a realistic and smooth pedal stroke. SMOOTH AND QUIET The closed resistance unit reduces noise and makes for a smoother ride. FEATURES - Type of trainer: Basic Smart trainer with magnetic brake - Virtual Power: Virtual Power - Magnets: 2x8 Permanent ferrite magnets - Transmission: Roller, 30 mm - Electrical requirements: No voltage required - Power indicator: None - Connection indicator (ANT/BT): None - Firmware upgradable: No - Suitable bikes: Road, Tri, & MTB with skewer quick release - Supplied with: Front wheel support, quick release for road bikes and mountain bikes (5mm) SPECIFICATIONS - Max. power (40 km/h): 1050 Watt - Simulation of descent: No - Max. torque: 17 Nm - Max. brake force: 50 N - Flywheel: Actual of 1.6 kg - Mass inertia: 9.18 kg (20.2 lbs) - Footprint (LxW): 675 x 650 mm (26.6 x 25.6 in) - Height: 410 mm (16.1 in) - Dimensions when folded: 565 x 410 x 245 mm (22.2 x 16.1 x 9.65 in) - Weight: 8.53 kg (18.8 lbs) DATA OUTPUT AND CONTROL - Wireless communication: ANT+ & Bluetooth - Control by: Handlebar resistance lever with 10 positions - Output: Speed - Read out on: Bike computer, Computer with ANT+ antenna, Smartphone, Sports watch, Tablet - Trainer Type: Basic, Manual, Wheel-on, Wheel-on - Features: Smooth ride feel, Silent, Powerful, Manual resistance control, Enables virtual power, Handlebar lever, Dual material roll, Resistance roll 30 mm, Actual flywheel, Foldable, Easy to carry, Easy to set-up, Suitable for power workouts, Suitable for interval training - Positions: 10 - Suitable axles: Width of rear fork: Road 130 mm, MTB 135 mm. Adapters for other widths available
$15.00
These two black plates fit nice and snug between the chainstays of the newly redesigned Disc Trucker (2020 and newer), allowing you to bolt on the kickstand of your choice without gravely injuring your frame. Our other silver-colored Kickstand Plates remain the best option for legacy Trucker frames, so please don’t use the old plates with the new bike or the new plates with the old bikes. Normally we don’t like to tell people how to use our stuff, but in this case we have to take… a stand. - Allows use of any kickstand while protecting chainstays from damage - Includes two plates to protect the top and bottom of the chainstays - Compatible with 2020 and newer Disc Trucker frames
$69.99
Note: This item only fits the Strider 14x Balance Bike. Perfectly engineered by Strider scientists in a secret underground lab, the Strider Easy-Ride Pedal Kit is the ultimate upgrade for the Strider 14x Sport. The Easy-Ride Pedal Conversion Kit attaches to the 14x Sport in a matter of minutes and makes installation simple and hassle-free. Children experience instant success with the Easy-Ride Pedal Conversion Kit. The Stride-Around pedals on the accessory are specially designed to serve two purposes. First, they perfectly fit a child's foot. Second, their narrow form allows children to confidently stride around them to gain momentum. The provided chain guard delivers the safety to protect your rider from any bike chain accidents. Not only that, but it keeps the chain and gears clean from any mud or gunk that might be part of your child's grand adventures. The coaster brakes make practicing skid marks easy peasy.
$8.50
Removes Presta and Schrader valve cores. CNC machined, anodized finish with laser-etched logo. Fits between spokes for quick and easy core removal. Features knurled end for a no-slip grip.
$20.00
- 5 DART plugs for use with the Stan's NoTubes DART tool
$25.00
Stan's Dual Action Repair for Tubeless (DART) fixes damaged tires faster, easier, and better than existing plug tools. While traditional tire plugs try to wedge rubber strips into a puncture, the DART creates a chemical reaction with your Stan's sealant to quickly form a permanent airtight bond. The DART's plastic tip is barbed to anchor firmly in place and stay put during even the most aggressive riding while being safer for rims, rim tape, and your hands. The material of the DART is also more flexible, and its laser-cut shape is optimized to contour to the shape of different punctures, maximizing surface area to increase the sealing reaction. Because the DART anchors to your tire and creates an instant bond with your sealant, it also won't pull out while riding the way a conventional plug can. One of the best features of the DART's design is that it doesn't require trimming once inserted, and excess material won't get in the way of your ride. DARTs can't be felt while riding, even on road tires, and they wear smooth naturally. - Repairs large punctures and slices - Reacts with Stan's sealant to form an instant, airtight seal - Barbed plastic tip anchors into tire and will not pull out when riding - Flexible material and laser-cut shape conforms to puncture and bonds with sealant - Wears off clean, no trimming needed, and can not be felt while riding, even on road tires - Lightweight, compact tool fits the shape of your hand for more precise use and includes built-in valve core remover - Includes two pre-loaded DARTs for sealing multiple and larger punctures - Clear caps keep DARTs clean and unthread quickly for fast deployment - Simple and easy to refill
$13.90
- Superior formulated dot brake fluid for dot 3 and dot 4 applications - Exceeds DOT 5.1 "Silicone" specifications - Synthetic glycol-ether formula will mix with other brake fluids conforming to US FMVSS: Dot 3/4 Requirements - Lasts up to 3 years in high performance conditions
$40.00
When we launched Secret Chain Lube, Josh admitted that the starting point for this product was a hot wax recipe he had used for years with pro teams that had won numerous world and Olympic medals. The idea behind Secret Chain Lube was to bring this technology to a lube that didn't require hot melting, but it turns out many of our customers were already big fans of hot waxing chains, and the requests flooded in for us to release the SILCA Secret Wax Blend...so here it is! Consisting of highly refined laboratory-grade paraffin and a high concentration of 3 specific sizes of nano-scale Tungsten disulfide, Secret Chain Blend not only acts as a lubricant but actually acts to modify the surface of the chain, filling in all of the crevices of the metal with highly lubricious and wear-resistant tungsten disulfide particles. As a result, chains waxed with Secret Chain Blend and Secret Chain Lube will actually get faster over time and after repeated waxings. Secret Chain Blend is the only hot wax lubricant to have a specifically matched and compatible drip wax that can be used to 'top off' the wax as needed, extending the duration between hot wax applications, and guaranteeing the quietest running drivetrain possible. Using the combination of Secret Chain Blend and Secret Chain Lube can dramatically extend the chain and drivetrain component life (up to 10x). - 500g / 17.6oz pouch - The chain should be VERY clean and dry before applying
$79.99
Shimano BT-R1A External Di2 Battery - All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions - Use Di2 system checker to update component firmware - Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems - Battery weight: 71 grams
$19.00
Shimano Genuine disc brake bleed Funnel unit for BL type MTB brake lever (M5 thread bleed port) Features: - Oil spill guard lid with an integrated oil stopper holder - Funnel base - Bleeding instructions available for download under 'Documents & Links' below
$57.50
Air Force Tier Three floor pump - Premium Rubber Overmolded Ergonomic Handle - Top Mounted 2.5" Analog Pressure Gauge (PSI/BAR) - Larger More Stable Pump Base - Simple Valve Head (Presta/Schrader) - Integrated Hose Keeper - All Metal Barrel and Pump Base - 28 1/2" Pump Height
$25.00
Ride smart and more safely with Serfas Bar End Mirrors to help increase awareness and visibility of your surroundings as you ride. - Unbreakable Stainless Steel Lens - Base: Eco-Friendly High Impact Nylon Fiber - Universal Design For Left & Right - Fits Handlebars With 16mm-22mm Diameter Bar Ends - Lens: 62mm Diameter
$15.00 - $20.00
The unique design of Serfas’ Switch-Hitter Nylon Cage makes it adjustable for center, right or left side bottle retrieval. On any bike frame where bottle clearance is an issue, this lightweight nylon cage shines.
$47.99
Adapts a thru axle hub bike for a Saris bike trainer. - Trainer Thru Axle Adapter For Saris Trainers - Thread pitch: 1.00 & 1.75 What's Included: - Thru axle - Washers - Endcaps with bolts Trainer Compatibility The Saris Trainer Thru Axle Adapter is designed for indoor use on Saris trainers only and should not be ridden outdoors. Compatible with current basic trainers. Not compatible with CycleOps PowerSync trainers. Contact us with trainer compatibility questions. Bike Compatibility Many bike manufacturers do not publish thread pitch or hub spacing online. If you are unclear as to what type of thru axle your bike uses, please contact us.
$39.99
The Saris thru axle adapter is designed for indoor use on Saris- or CycleOps-branded trainers only and should not be ridden outdoors. - Compatible with Classic series trainers and most Pro series trainers. Not compatible with PowerSync trainers. Contact us with trainer compatibility questions. - This adapter is designed to work with bikes that have a 142x12mm thru axle with 1.0 or 1.75 thread pitch. - The axle is threaded on both sides to fit both Syntace and Maxle/ABP style thru axle systems. - Many bike manufacturers do not publish thread pitch or hub spacing online. If you are unclear as to what type of thru axle your bike uses, please reach out to your local bike shop or the bicycle manufacturer directly. What's Included - Thru axle - Washers - End caps with bolts
$24.99 $39.99 38% Off
For a stable, worry-free ride with any rear wheel-mounted trainer. Product Features - For a stable, worry-free ride with any rear wheel-mounted trainer. - Unique 3-level design lets you select the level of difficulty. - Stack two blocks to simulate climbing workouts. Three different positions to raise your front wheel and simulate hill climbs - 2.1 inches (5.3 cm) - 2.7 inches (6.8 cm) - 3.1 inches (7.9 cm)
$249.99 $299.99 17% Off
Better health. Faster splits. More me-time. Whatever your goals may be, the Fluid2 helps you get the most out of each indoor training ride. The large, precision-balanced flywheel (with patented fan design) lets you easily customize each ride simply by shifting gears, just as you would outside. This design also helps keep your Fluid2 working better – longer. And, thanks to our built-to-last manufacturing process, the Fluid2 can help you conquer one goal after the next. - Fluid resistance unit provides a quiet and consistent ride. - Progressive resistance offers the widest resistance range and road-like feel. - Best-selling trainer in the USA - Compatible with Zwift and other indoor cycling apps
$75.00 $191.99 61% Off
Stick to your fitness plan year round with the help of the Saris Mag+ trainer. It is the perfect way to keep your legs warm when it's cold, dry when it's wet, and safe when it's too dark to ride outside. With this turbo trainer, it's easy to turn your bike into your go-to calorie burner — no matter the season. Simply attach the handlebar-mounted shifter to change resistance during your workout without having to leave your bike. Want to train with Zwift or Rouvy? All you need is a speed sensor. Visit our setup guide to learn how to get started. - Magnetic resistance unit provides a quiet and frictionless ride. - Linear resistance boosts workout intensity to match each pedal stroke and gear click. - Mag+ comes with convenient, adjustable handlebar-mounted shifter. - Compatible with Zwift and other indoor cycling apps
$25.00 $63.99 61% Off
Protects your floor from sweat and bike grime. Product Features: - Protects your floor from sweat and bike grime. - Keeps your trainer from "walking" during intense workouts. - Durable construction absorbs vibration and noise. - Training mat measures 65 x 36 inches. - Black PVC foam gives the training mat superior sound absorption. - Resistant to moisture, and easy to clean with soap and water when necessary.
$19.98 $23.99 17% Off
Keeps corrosive sweat from reaching your frame. - Cell phone pouch included.
$47.99
TRAINER THRU AXLE ADAPTER FOR SARIS TRAINERS WHAT'S INCLUDED: - Thru axle - Washers - Endcaps with bolts - The 148x12mm adapters also come with a shorter bolt action slider tube. TRAINER COMPATIBILITY The Saris Trainer Thru Axle Adapter is designed for indoor use on Saris trainers only and should not be ridden outdoors. Compatible with current basic trainers. Not compatible with CycleOps PowerSync trainers. Contact us with trainer compatibility questions. BIKE COMPATIBILITY Many bike manufacturers do not publish thread pitch or hub spacing online. If you are unclear as to what type of thru axle your bike uses, please reach out to your local bike shop or the bicycle manufacturer directly. Both 148x12 Thru Axle Adapters are compatible for both 142 and 148mm bikes. 148x12 Thru Axle Adapter, 1.5 Thread Pitch (9733T) works for: - 148 x 12mm - 142 x 12mm - 1.5 thread pitch
$10.00
- Diameter: 8mm - Overall Length: 345mm - After Bend: 270mm - 45 degree bend
$68.00
The Salsa EXP Series Anything Cage HD is a unique cargo mounting system that allows you to carry lightweight gear or large bottles on forks and down tubes that have Three-Pack mounts. - Versatile system designed for the Salsa Anything Cage Bag with EXP Series Rubber Straps (included) or nylon EXP Series Anything Cradle Straps - Constructed with glass-filled nylon for strength and durability - Holds gear low on fork blades or down tubes with Three-Pack mounts - Includes Anything Cage HD with hardware, Anything Cage Bag, and two 20" Salsa EXP Rubber Straps - Maximum load: 6.6 lb (3kg)
$240.00
The Salsa EXP Series Anything Cradle is a bracket-mount handlebar roll system that holds gear in front of your handlebars without kinking your cables. This modular system is designed around our EXP Series Top-Load Dry Bag, which maintains a fixed width for loading with ease, or you can use your own dry bag. The Anything Cradle allows you to distribute your gear evenly—an essential part of any well-balanced bikepacking setup. - Kit includes Anything Cradle, Top-Load Dry Bag, EXP Series Front Pouch, and two 30" Salsa EXP Series Rubber Straps - EXP Series Anything Cradle Top-Load Dry Bag is fixed-width for easy loading - Salsa EXP Series Rubber Straps are made of non-slip TPU to hold gear securely - Works with or without EXP Series Anything Cradle Front Pouch - Anything Cradle Dry Bags feature a welded seam construction with waterproof materials and hook-and-loop straps for easier installation - Anything Cradle Front Pouch uses water-resistant fabric with welded seams for weather protection - Anything Cradle Arms are compatible with 35.0mm handlebars or 31.8mm handlebars (with included shim) - Nylon 6/6 composite cradle, 6061 forged aluminum arms - Maximum load weight: 8 lbs. (3.6kg)
$125.00
The EXP Series Seat pack keeps gear high, centered, and in line with you and your bike. Much like a dry bag or stuff sack, the EXP Series Seat pack fits a wide range of load sizes, and dutifully carries anything you need on your next two-wheeled mission. - Water-resistant welded construction with waterproof fabrics - Roll type closure and air purging valve that allows for managing overall volume - Stretch cord storage on top - Durable 1000D material strategically placed in high wear areas - Weight: 380g - Capacity: 6 – 14 Liters
$10.00
- Fits Salsa Minimalist and Alternator Racks - 8mm x 370mm
$74.00
Standard bleed kit for mineral oil brakes - Includes 2 syringes/2 M4 fittings, bleed block, Torx tool, crowfoot - SRAM Model ID: DB-SPP-A0
$127.00
- Pro bleed kit for mineral oil brakes - Includes 2 syringes/2 M4 fittings, bleed block, Torx tool, crowfoot
$263.00
Power every ride. We've taken the reliability, elegance, and features of Quarq's legendary crank-based power meter and dropped the barrier to entry once again. This new power meter platform is entirely contained within the DUB spindle for clean integration that fits more bikes than ever. It's invisible technology that adds minimal weight and will help you get to the finish line faster, and it can be used to upgrade any eTap AXS bike. - An elegant, integrated design - DUB-PWR spindle-based unit measures left-side power to calculate total watts - Proven Quarq reliability and accuracy - Long battery life (400+ hours) to power a season of rides - User-replaceable lithium AAA battery - DUB bottom bracket adds durability and simplicity - Waterproof (IPX7 waterproof to 1 meter for 30 minutes) - Lightweight (less than 40g heavier than standard crankset) - Simple and affordable power meter upgrade option - Right Arm/BB/Spider/Chainrings NOT INCLUDED
$49.00
SRAM eTap batteries are literally a snap to remove and charge. Just flip the tool-free battery latch up and slide the battery up and out of the derailleur. Then snap the battery into the USB powered charger and connect the charger to any USB power source or A/C USB adaptor. A full charge takes just 45 minutes to complete. - Finish: Black - Compatibility: SRAM RED eTap
$415.00
Significantly smaller, the SRAM eTap AXS BlipBox is now easier to integrate — mounting inside a stem faceplate cap, feed box, or frame. It's also AXS enabled, for easy personalization. Simple, intuitive, aero. - Replaces standard drop bar shift levers - Simple and intuitive eTap shift logic - AXS enabled for easy personalization - Limitless aero configurations - Two ports per side for Blips - Fits the included optional stem mount - Compatible with existing eTap Blips and Clics - Mounts inside stem faceplate cap, feed box or frame
$59.00
SRAM eTap Battery is the power source for the eTap system. The same power unit is interchangeable between front and rear derailleurs. - Up to 1000 kilometers of riding per charge - Weight: 24g - Finish: Black - Compatibility: SRAM RED eTap
$9.99
Keep water and mud off you with SKS's Mud-X down tube fender! This versatile fender works with most bikes regardless of wheel size.
$43.99
Mudrocker Front Fender for MTB is your perfect trail companion. Provides excellent mud and splash coverage on 27.5, 650b or 29er wheels with a maximum tire width of 3.0" Attaches to fork legs with hook and loop straps. Hook and loop strap fasteners or cable ties can be used to mount the Mudrocker to the fork bridge. If the fork bridge is perforated, the Mudrocker can be securely mounted with the included adapter. Fender can be adapted with scissors if necessary depending on the fork bridge. Perfect companion with the Mudrocker Rear Fender. - Measurements: 490mm - Weight: 112 grams - Compatiblity Notes: Compatible with disc brakes. Not compatible with V-brakes. - Made in Germany
$8.99
Easily adapts schrader only air compressors, floor pumps, and mini pumps to work with presta valves
$71.99 - $79.99
Fender set made of robust sandwich construction A really brilliant performance! The SKS BLUEMELS BASIC mudguard set not only integrates perfectly on the bike, but also reliably protects against dirt and splash water. Thanks to the flexible sandwich construction, in which extremely fine aluminum strips are embedded in a plastic coating, the fenders are extremely robust, rigid, and protected against corrosion. Stylish driving fun with a safety system The ASR or ESC safety system ensures that the struts are decoupled if branches get between the spokes so that the wheel does not lock. The V-struts with fixed bridges guarantee an individual adjustment, the bottom bracket cut-outs make assembly possible even in tight spaces. Includes accessories and struts. - Aluminum/plastic sandwich construction - V-struts with fixed bridges for flexible adjustment - ESC safety system - Bottom bracket cutouts - Made in Germany - Tire width in inches: 2.1"-2.4" - Tire width in mm: 54-61mm - Front mudguard length: 680mm - Rear mudguard length: 1185mm
$24.99
No matter the conditions, stay dry and clean with SKS's X-Tra Dry rear fender! It's super light and nearly unbreakable so you know it's ready for the miles, on road and off. Plus, it's longer and fatter than the regular X-tra Dry so it works great with 29ers and fatter 700c tires. It's also a breeze to attach with its easy-to-adjust seatpost mounting strap.
$30.00
Performing the right maintenance on your SRAM and RockShox products not only ensures years of worry-free riding, but will also keep performance optimal and enhance your experience on the bike. Each service interval indicates the maximum number of riding hours designated for each type of recommended maintenance. Depending on the terrain and environmental conditions in your location, your riding style, and skill level, you may see more optimum performance if you service your SRAM and RockShox products at shorter intervals.
$36.00
Performing the right maintenance on your SRAM and RockShox products not only ensures years of worry-free riding, but will also keep performance optimal and enhance your experience on the bike. Each service interval indicates the maximum number of riding hours designated for each type of recommended maintenance. Depending on the terrain and environmental conditions in your location, your riding style, and skill level, you may see more optimum performance if you service your SRAM and RockShox products at shorter intervals.
$49.00
50 HOUR SERVICE KIT (INCLUDES AIR CAN SEALS, PISTON SEAL, GLIDE RINGS, SEAL GREASE/OIL) - SUPER DELUXE THRUSHAFT C1 - TREK (2021)
$11.00 - $23.00
• Service kits include air can seals and wiper • Available for RockShox air rear shocks--Ario, Monarch, Monarch RT3, DebonAir and Monarch Plus
$40.00
Periodic hydraulic damper bleeds are necessary to maintain consistent performance. RockShox's Charger Damper Bleed Kit has everything you need to keep your Charger-equipped fork charging hard.
$49.00
- 50 hour service kit for Deluxe and Super Deluxe rear shocks - Includes air can seals, piston seal, and glide rings
$17.00 - $43.00
Service kits include dust seals, foam rings, oil seals, air and damper o-rings needed for basic service.
$20.00
200 hour/1 year Service Kit (includes dust seals, foam rings, o-ring seals) -Judy Gold and Silver (2018+)
$21.00
Don't let the weather get in the way of adventure. The RockShox branded ZEB short fender is designed to keep you dry and clean when the weather turns. It can be easily installed at three points and looks as if your fork and fender are one, leaving your friends wondering why they are still messing around with zip ties. - 3-bolt mounts make for easy installation - Designed to integrate seamlessly and look pro with RockShox branding - Compatible with all ZEB models
$19.00
• Removes and installs all RockShox 1/2mm rear shock eyelet bushings and mounting hardware
$34.00
Factory service kits for Reba A7 forks
$20.00
200 hour/1 year Service Kit (includes dust seals, foam rings, o-ring seals) - Recon RL/TK A1 (2018+)
$16.00 - $21.00
Optimized for RockShox forks, RockShox MTB Fenders deliver exceptional protection for your fork, with deep side skirts to keep the mud and debris away from the most vital parts of your fork—and your body. Take your bike's customization to the next level with nine color offerings made to match RockShox decal packs—or go black-on-black for that minimalist look. MTB Fenders come complete with four beefy zip ties for installation so you can get to the trailhead sooner and shred with much less mess. - Works on all RockShox fork models - Comes with 4 zip ties for immediate installation - Offered in a wide range of colors that match RockShox's fork decal packs - Designed specifically for RockShox forks - Deep side skirts protect stanchions and dust seals from rocks and debris - Precisely placed mounting holes make the fender follow the wheel's contour, minimizing contact when the fork is compressed
$5.00 - $38.00
RockShox's Suspension Oil comes in different weights to match the most popular suspension fork and shock setups.
$11.00
Works with the following forks: - Pike - Lyrik - SID - Revelation - Reba - Paragon This tool can also be used to remove and install SRAM/Shimano cassettes.
$53.00
- Trek Reaktiv Thru Shaft 200 hour service kit
$5.99
- Makes braking and shifting super smooth by reducing the drag in cable housings - Law prohibits ORM-D materials from shipping by air
$12.99 - $22.99
Rock-N-Roll Extreme is a very clean lubricant due to its ability to shed dirt and dust. - For mountain bike or wet road riding
$12.99 - $22.99
Rock-N-Roll Gold lubricant is for both mountain and road bike use. The formulation goes deep down into the chain and traps any dirt. Then, with the energy of the chain freewheeling backwards, the dirt and grit floats to the surface so you can wipe it all off, leaving a new and clean application of lube inside the chain, where it's needed. - All-purpose lube - Cleans and lubricates simultaneously
$15.99
- Green colored spoke prep remains pliable for adjustments - Helps keep spoke nipples from loosening
$7.00 - $17.90
- Premium white grease - Great for bearings and overhauls
$58.00 - $65.00
Purchase our Kid Trailer axle for your bike, and share your stoke for cycling with your kids. Simplify your life by allowing quick and secure attachment of your trailer to your best and favorite bike. Enjoy the adventure. Robert Axles for Kid Trailers are designed specifically to fit your 12mm thru-axle bike and allow attachment of any hitch-mounted trailer. These fit any trailer that has two wheels and a single point of attachment to the axle. This includes all the two-wheeled child, pet, and cargo trailers such as Thule, Chariot, Burley, Instep, Carry Freedom, and many more. - The axle shaft and axle end are precision CNC-machined. - The axle shaft is 7075 aluminum and hard black-anodized for rugged durability. - The stainless steel axle end allows for mounting of the hitch provided with your trailer. - Hardware for attachment of the hitch is included; the hitch, itself, is not. - No special tools required. Design allows for wheel installation and removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world.