Indoor Cycling

Reliable. Durable. Quieter Than Ever Before. When it comes to indoor bike trainers, the most frequently asked question is: how quiet is it? Taking this to heart, our Madison, Wisconsin-based team put this query under the microscope and set a goal to build a trainer so quiet, that the only sound is that of your drive train. The result? A direct drive smart trainer that touts a sound specification of 59 decibels at 20 mph. In other words, the H3 is five times quieter than previous generations, making it the quietest smart trainer to ever leave our doors. Following the Saris direct drive smart trainer legacy, the H3 features the same reliably and durability as its predecessors. Each H3 is made from cast and machined aluminum sourced from America’s heartland. Encased inside are components meticulously calibrated to measure power, speed and cadence, as well as a precision-balanced flywheel - all built to handle 2000 watts and replicate a 20% climbing grade. Tested to withstand heavy training, the H3’s internal cooling system will keep the electromagnetic resistance system working – and accurate – long after your legs have given out. - Quieter Than Ever: all new drive system shaves decibels off previous generations. - Precise Training: +/- 2% power accuracy. - Controlled and Consistent: electromagnetic resistance provides a measured workout every time. - Direct Drive Design: widest bike compatibility and eliminates wheel slips. - No External Sensors Required: measures speed, cadence and power. - Seamless Integration: connects to indoor cycling apps with dual ANT+ FE-C and Bluetooth FTMS standards. - Zwift certified. Specs - Noise level: 59 decibels at 20 mph - Power measurement accuracy: +/- 2% - Maximum power output: 2000 watts at 20 mph - Simulates a 20% climbing grade - Fast response electromagnetic resistance - Measures speed, cadence and power – no external sensors needed - 20 lb precision balanced flywheel - Integrated dual ANT+ FE-C and Bluetooth FTMS standards - Built-in front wheel block - Integrated carrying handle - Compatible with Shimano 8-11 speed cassettes - XD/XDR freehubs sold separately (link) - Thru-axle compatible for bike frames with fork widths of 142 or 148. - Quick-release compatible for bike frames with fork widths of 130mm and 135 mm. - Compatible with a wide variety of devices and indoor cycling applications, including Rouvy, Zwift, TrainerRoad and many more. Contact us with questions about compatibility with other software. - Headless mode (powered on, not paired to any apps) lets you ride with a progressive resistance curve that matches the Fluid2 (link). - LED indicator lights communicate connectivity and more. - Direct drive design directly connects the bicycle to the resistance unit, eliminating tire wear. - Internal cooling technology ensures accurate ride data even during the hardest of workouts. - Folding legs provide widest footprint of direct drive indoor bicycle trainers on the market for added stability and easy storage. - Accessible and balanced handle allows for smooth, anyone-can-carry transit of the trainer. - Over the air (OTA) firmware updates and calibration via the Saris app (link to firmware page) - Maximum weight (rider and bike): 300 lbs. - Dimensions when Open L*H*W: 31x18.5x19.5 inches (787.4x469.9x495.3 mm). - Dimensions when Closed L*H*W: 8.5x18.5x19.5 inches (76.2x469.9x495.3 mm). - Weight: 47 lb. (21.3 kg). - Cassette sold separately.

No fancy gizmos. No wires. No fuss. If you’re looking for an easy way to ride your bicycle indoors, call off the search – you’ve found it. Whether your training for a local charity ride or working to beat your friend’s FitBit score, the Mag indoor bike trainer can help you make it happen. Simply connect the trainer to the rear wheel of your bike, hop on, and pedal away. Plus, the Mag comes with five adjustable levels of resistance so you can adapt every ride to your liking. - Magnetic resistance unit provides a quiet and frictionless ride. - Linear resistance boosts workout intensity to match each pedal stroke and gear click. - Features five adjustable levels of resistance - Compatible with Zwift and other indoor training apps

No matter how busy you are, hop on Sunlite's F-5 Training Cycle and get a workout regardless of the weather outside. The fully adjustable design means you get a perfect seating position so you can perform at your peak, and the heavy-duty frame keeps flex to a minimum for awesome power transfer. Adjustable resistance allows you to tailor your workout, too, and the side-braking resistance design translates into longer bearing life. You can even track your time, speed, distance, calories, and total distance on the built-in computer. And when it's time to tuck the F-5 away, oversize wheels help you roll it across hardwood floors and even carpet.

Whether you want to attend a group ride in Zwift, climb the Dolomites in Rouvy, or simply need a sweat session, the M2 smart trainer can get you there. All you need is your bike, the M2, your favorite virtual training software, and device of choice. This do-it-all, smart bike trainer is capable of replicating any workout thrown its way, up to 1500 watts and a 15% climbing grade. Simply connect to your virtual training application of choice via integrated dual-band ANT+ FE-C and Bluetooth, and let the M2’s electromagnetic response system do the rest. And, thanks to integrated speed, cadence, and power data, you can track and record performance data without extra external sensors. Plus, our innovative clutch knob ensures perfect tire-to roller connection for every single ride. - Noise level is a quiet 69 decibels at 20 mph. - PowerTuned using PowerTap technology for accurate power readings up to +/- 5%. - This trainer is designed to fit common road and mountain bike frames with included steel quick release skewer and has three settings for rear dropout spacing: 120mm, 130mm, and 135mm. - Optional thru-axle adapter available for 142x12mm and 148x12mm. - Integrated dual ANT+ FE-C and Bluetooth standards. - Fast response electromagnetic resistance ensures most responsive resistance and maximum power available. - Robust design is capable of handling up to 1500 watts at 20 mph and can simulate up to a 15% climbing grade. - Headless mode (powered on, not paired to any apps) lets you ride with a progressive resistance curve that matches the Fluid2. - Internally integrated speed, cadence, and power data eliminates the need for extra external sensors. - LED indicator lights communicate connectivity and more. - Internal cooling system moves air through the trainer to keep it cool while active thermal sensors ensure accurate performance data even during the hardest of workouts. - Comes on the Saris foldable Classic frame with spring loaded, bolt-action lever. - Features clutch knob for perfect roller to tire tension each ride. - 2" resistance unit roller allows for 650b, 700c, 26", 27", and 29" - up to a 2.0-inch tire. - Does not fit 650c wheel sizes, nor all 29er tires. - Precision-machined alloy roller reduces tire wear and slippage. - Eccentric leveling feet allow for easy adjustment on uneven surfaces. - Trainer tire recommended - Compatible with a wide variety of devices and virtual training applications, including Rouvy, Zwift, TrainerRoad, and many more. Contact us with questions about compatibility with other software. - Over the air (OTA) firmware updates via Bluetooth devices ensures the M2 is up to date. - Some assembly required - All of our trainers are tested to the combined weight (rider and bike) of 300 lbs. - ANT+ and BlueGiga USB dongles sold separately - Not compatible with CycleOps- or Saris-branded 20/24" wheel adapter

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

The Elite Thru Axle adapter kit makes Elite trainers compatible with bicycles with 10mm to 12mm diameter through bolts on the rear wheel (lengths from 130mm to 148mm boost). Easy to set up to start right away with your training, this Thru Axle adapter is made from quality material to ensure an immediate setup and great protection to the threads of your bicycle frame. This unit does it all!

The Tacx Sweat Cover protects your bike from corrosion caused by perspiration. It is made from absorbent textile to catch and retain perspiration. Its clever design fits all bikes and enables easy mounting.

Love riding when you travel? Weekends spent at the races? Or just want to be able to train in a small living space? Meet the Omnium Zero-Drive Portable Trainer. The foldable, compact and adaptable fork-mount design keeps the rear wheel on the bike and offers the most dynamic ride quality of any trainer available. Plus it’s unique roller design is so quiet you’ll never disrupt the neighbors. When you’re finished, the elegant folding design hides in its padded tote like it was never there. Add a Sweat Guard and Floor Mat and you’re armed with the complete training package. - Zero Resistance is ideal for high-speed spinning and track cycling workouts - Adaptable fork-mount and sliding sled design (16”-29” wheel; thru-axle and QR compatible) - Lightweight 13.3lb (6.03kg) design makes it the ideal, portable cycling training partner - Precision machined 4.25” aluminum rollers create a smooth and quiet ride - Dynamic, free-floating rear wheel design promotes the most realistic riding experience of any stationary bike trainer - Included fork adapters: - 9mm Quick-Release - Thru Axle: 12×100mm, 15×100mm & 15×110mm - Available fork adapters: - Cannondale Lefty, 20x100mm (BMX thru axle), 8mm x 74mm (folding bike) - Adaptable to virtually any bike size and geometry - Optional Sled Extension (up to 1348mm wheelbase with optional extender) - No tools required to assemble or store — simply unfold for cycling training and fold for storage and travel - Maintenance-free resistance unit and roller bearings - Includes heavy-duty, water- and abrasion-resistant tote bag for easy transport and storage

Misuro B+ is the perfect sensor to enhance your training sessions with Elite home trainers and rollers. This ANT+ and Bluetooth Smart Speed/Power/Cadence sensor monitors indoor training sessions via smartphone, tablet, cycle computer, or compatible GPS devices when installed on an Elite trainer. - Reads data based on the type of trainer used. - Uses ANT+ and Bluetooth Smart protocols that are compatible with many devices. - When paired with the My E-Training Software, it turns your Elite trainer into an advanced digital instrument that displays and manages fundamental training data.

Giant's Cyclotron Chopping Block supports and lifts your front wheel so you ride a level bike when you're on a trainer. It holds 700c and 26-inch wheels and has a stable, anti-skid base. It's made of ABS plastic for strength, low weight, and durability.

Love training when you travel? Need an awesome warm-up and cool-down during weekends at the races? Want to crush that indoor bike trainer workout in a small living space? Meet the Omnium Over-Drive Portable Bike Trainer. The adaptable fork-mount design keeps the rear wheel on the bike and offers the most dynamic ride quality of any stationary bike trainer available. Plus the precision rollers and internal progressive resistance design is so quiet you’ll never disrupt the neighbors. When you’re finished, the elegant folding design hides it in its padded tote like it was never there. Add a Sweat Guard and Trainer Mat and you’re armed with the complete training package. - Dynamic, free-floating rear wheel design promotes the most realistic riding experience of any stationary bike trainer - Patented, Internal Progressive Resistance via friction-less Eddy Current - Parabolic, progressive resistance curve accurately simulates outdoor cycling (rolling + wind resistance) - Adaptable fork-mount and adjustable sled design (16”-29” wheel; Thru-Axle and QR compatible) - Lightweight design for a complete bike trainer system – 14lb (6.35kg) - Precision machined 4” aluminum rollers create a smooth and quiet ride - Included fork adapters: - 9mm Quick-Release - Thru Axle: 12×100mm, 15×100mm & 15×110mm - Available fork adapters: - Cannondale Lefty, 20x100mm (BMX thru axle), 8mm x 74mm (folding bike) - Adaptable to virtually any bike size and geometry (up to 1348mm wheelbase with optional extender) - Maintenance-free resistance unit and roller bearings - Includes heavy-duty tote bag for easy transport and storage - Compatible with cycling apps: Zwift, The Sufferfest, TrainerRoad and Kinomap traditional trainer features* - Patent number: 9,393,475 *Requires ANT+ or BT rear wheel speed sensor

The Mag Riser Block 3 from Minoura lifts up your front wheel during a training session to be at a natural level. This block fits both MTB and Road bike tire widths. - Fits under front wheel to level the bike to get natural riding on training - Double grooved design fits your narrow or wide ties - Polyethylene material minimizes weight at 1/2 lb. - 8.6D X 4.7W X 2.75H (inches)

Top resistance unit, innovative frame: excellence renewed - 8 resistance levels adjustable by a practical selector on the handlebar. - Use the Misuro B+ sensor for compatibility with the My E-Training or third party apps. Tech info - Novo frame: integration of steel and technological plastic materials. - Magnetic resistance unit, very compact. - Maximum stability at high speeds or at maximum effort guaranteed by the absorbing structure of the frame. - Lifting of the bicycle is limited to the minimum. - Fast fixing system: the bicycle can be clamped and released with a single quick operation. - New adjustable support system, allowing an adequate and constant pressure between the roller and tire. - 30 mm diameter elastogel roller. - The training roller folds up easily and becomes compact for easy transport or storage when not in use. - Adapts to all wheels from 24" to 29".

Take on any race, club ride, or weekend adventure with confidence. When you add Saris rollers into your training routine, you'll increase your balance, control, and ability to ride a straight line — all of which translate to more efficiency, power, and technique on the road. And, because you have to pedal 100% of the time to balance your bike, you get an amazing workout, no matter your pace. - Improve balance, control, and ability to ride a straight line. - Aluminum roller drums run silently and smoothly. - Precision-lathed 3.25" aluminum roller drums won't distort in heat or sunlight. - Fold flat or stand on end for convenient storage. - Designed for both indoor and outdoor use - 16" wide wheel base fits just about any size of bike and allows plenty of room to move around. - Rubber foot pads ensure that the only thing moving on the rollers are the drums, providing a secure, sturdy ride. - Durable steel-frame construction - Adjustable belt for right and left dismount - Resistance Roller uses zero moving parts to deliver quiet magnetic resistance. - Maximum wheelbase 44.5" (axle to axle) - Minimum wheelbase 37.5" (axle to axle)

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

- Includes clutch knob and L-bolt - Basic Trainer Clutch Knob is compatible with any Wind, Mag, Mag+, Magneto or Fluid trainer that already uses L-bolt - Magnus Clutch Knob should only be used with Magnus Smart Trainer - Watch our video to learn more

Adjust resistance on Mag trainer without leaving the saddle. - Quick Release mounting system fits most stems. - For use with the Mag bike trainer only

The Gel Block is an indispensable accessory for perfecting your position on the bike and provides a more natural feel to your training. - Reduces vibrations on the handlebars for more comfortable training - Non-slip Elastogel insert ensures maximum stability and alignment of the front wheel - Suitable for road and MTB

CycleOps' Climbing Riser Block offers 3 levels of elevation to lift your front wheel and provide a workout simulating climbing hills. For steeper climbing workouts, 2 climbing blocks (sold separately) may be placed on top of each other for many different adjustment levels.

Kurt Kinetic's 12mm Traxle Through-Axle lets you attach your mountain bike to a Kinetic trainer without changing the original skewer. The Kinetic Traxle comes in 3 thread pitches: - T-2101 Coarse: M12 x 1.75mm - T-2102 Medium: M12 x 1.5 - T-2100 Fine: M12 x 1.00mm (Fine XL has the same thread pitch and is a longer version of the fine Traxle)

For year-round training and a fully interactive indoor cycling experience, the Flow Smart trainer offers everything you need. Its wheel-on design allows for easy setup and storage. It even connects to your favorite apps, such as Zwift, Tacx, and TrainerRoad. - Wheel-on design sets up with two easy clicks and securely locks in place - Measures speed, power, and cadence - Virtually silent flywheel lets you ride without disturbing others - Works with popular third-party training apps such as Zwift and Tacx - Train with realistically simulated inclines up to a 7% gradient FEATURES Type of trainer: Interactive Smart trainer with electric brake Magnets: 6 Magnets Transmission: Roller, 30mm Electrical requirements: 110-240 Volt Power indicator: None Connection indicator (ANT/BT): None Firmware upgradable: Yes Suitable bikes: Race, Tri, & MTB; if necessary with axle skewer; 29" wheel with Tacx trainer tire Suitable axles: Width of rear fork: Race 130mm, MTB 135mm. Adapters for other widths also available Supplied with: Front wheel support, Quick release for road bikes and mountain bikes (5mm) SPECIFICATIONS Max. power (40 km/h): 800 Watt Max. incline: 6% Simulation of descent: No Max. torque: 15.3 Nm Max. brake force: 45 N Flywheel: 1.6 kg Mass inertia: 11.8kg (26.0 lbs) Calibration: Spin down Footprint (lxw): 675 × 650 mm (26.6 × 25.6 in) Height: 410 mm (16.1 in) Dimensions when folded: 565 × 410 × 245 mm (22.2 × 16.1 × 9.65 in) Weight: 9.41 kg (20.7 lbs) Article number: T2240 DATA OUTPUT AND CONTROL Wireless communication: ANT+ FE-C, Bluetooth Smart open Control by: ANT+FE-C bike computers, Connect to computer via ANT+antenna, Smartphone, Tablet, Stand alone Output: Cadence , Power , Speed Read out on: Bike computer, Computer with ANT+ antenna, Smartphone, Sports watch, Tablet Error Tolerance: <5%

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.

This Revolutionary Smart bike trainer is designed to create an unprecedented, one of a kind, and immersive experience. It is equipped with vivacious features like Virtual shifting, Gear Feel, and descent simulation. It is, without question, the most innovative smart bike offering the most realistic cycling experience possible, and it is compatible with most popular applications like Tacx, TrainerRoad, and Zwift. Realistic, As it Should Be Simulating your outdoor ride indoors is what this Smart bike trainer is designed for. With Dynamic Inertia, Road feel, and Gear feel, the Tacx NEO Bike brings you the most realistic and smooth cycling feeling possible. Extremely Quiet The combination of NEO Smart technology and the internal design of the NEO Bike resulted in the most silent indoor bike trainer available. Incredibly Powerful Unmatched power. The NEO Bike is able to resist sprints up to 2200 watts and simulate climbs up to a 25% incline, making sure this trainer is able to deliver during the most intense training sessions. Accurate and Reliable The Tacx NEO Bike measures your power with incredible precision, making sure that your data is accurate and reliable. This Smart trainer is the only trainer that doesn't require a calibration process. It measures your power with a a maximum deviation of 1%. Dynamic Inertia Dynamic inertia is developed to control the mass inertia (ride feel) as realistically as possible. In contrast to the mass inertia of a flywheel, Dynamic inertia compensates for weight, speed, and angle of inclination. This ensures the most realistic and smooth ride feel. Customization Pedals, saddle, (tri)handlebar, bar tape, and crank lengths 4.5" Display Shows your data and allows for easy setup and manual control Control Buttons Change the setup or manually control the trainer 2 USB Chargers Power up your smartphone or tablet Plug In/Plug Out Choose to train with or without main power Isokinetic & Isotonic Train on a fixed speed or power level Interactive Air Fans The two air fans on the handlebars of the NEO Bike are interactive, the airflow will adjust to speed, power, or heart rate. The airflow can also be set at a constant speed. Realistic Virtual Shifting Like your road bike, the NEO Bike is able to shift gears. By pressing the up or down buttons on the shifters, you are able to change the gearing of your virtual drivetrain instantaneously. A clear display in the front shows which gear you're in. These virtual gears are customizable with the Tacx Utility App. Pedal Stroke Analysis The NEO Bike Smart measures the position of your left and right legs. This allows you to precisely measure and analyze your pedaling technique in order to develop a more effective pedal stroke. Road Feel & Gear Feel Experience the feeling of riding over cobblestones or shifting gears. The Road Feel and Gear Feel features simulate the vibrations of different road patterns, but also your virtual chain jumping into a different gear. This immersive feature is unique to the NEO trainer series and can be used with Tacx Films and Zwift. Descent Simulation At the top of a hill or mountain, there is always that exciting feeling of accelerating into a descent. Exactly that feeling is what this bike trainer gives you. The NEO Bike accelerates when on a descent. FEATURES - Type of trainer: Smart bike with direct-drive and motor brake - Magnets: 32 Neodymium magnets - Transmission: None - Electrical requirements: 110-240 Volt, Main power optional - Power indicator: Multicolor LED, Spot on floor - Connection indicator (ANT/BT): 2 LEDs - Firmware upgradable: Yes - Gear ratios: Chainrings: up to 3 sprockets, 22 – 53 teeth per sprocket. Rear cassette: up to 12 sprockets, 11 – 40 teeth per sprocket Q-factor: 147mm - Supplied with: Fans, Tablet mount, Saddle, Handlebars, 2 USB chargers (front), Sweat cover, Ciro bottle cage, Bottle, Tacx towel, 1 month Tacx Premium software. Pedals and tablet sold separately SPECIFICATIONS - Max. power (40 km/h): 2200 Watt - Max. incline: 25% - Simulation of descent: Yes - Max. torque: 85 Nm - Max. brake force: 250 N - Flywheel: Virtual - Mass inertia: Variable to 125kg (275.6lbs) - Calibration: No calibration required - Footprint (lxw): 1390 x 750mm (54.7 x 29.5 in) - Height: 1170mm (46.1 in) - Weight: 50 kg (110 lbs) - Article number: T8000 DATA OUTPUT AND CONTROL - Wireless communication: ANT+ FE-C, Bluetooth Smart open - Control by: ANT+FE-C bike computers, Connect to computer via ANT+ antenna, Smartphone, Tablet, Stand alone - Output: Cadence, Power, Speed - Read out on: Bike computer, Computer with ANT+ antenna, Smartphone, Sports watch, Tablet - Error tolerance: <1%

Hook your bike up to Sunlite's F2 Trainer and ride whenever you want, regardless of weather, daylight or schedule issues. It features a heavy-duty steel frame for a stable base when you're cranking on the pedals and a quiet magnetic resistance unit for a real-world feel.

Replacement straps for Sunlite FlatForm II pedals - Strap size: 340 x 55mm

Our Trainer Axle is designed to adapt your thru-axle equipped bike to on-wheel trainers, such as a 1up, Blackburn, Cyclops, Kinetic, Tacx, Wahoo, and many others. Our goal is to fit the thru-axle to your bike perfectly to minimize spacers and extra parts, providing a clean, high-performance axle for your bike. Train, warm up, and be race ready and fit for the season. - When it’s time for your race or time to head outside, simply remove your bike from the trainer, remove the drive side axle end and go. Our axle is suitable for use on or off the trainer, indoors or out. - The axle shaft and axle ends are precision CNC-machined from 7075 aluminum and hard-anodized for rugged durability. - No special tools required. Design allows for installation or wheel removal using your standard 5mm hex wrench. - Designed, built, and quality tested in the USA. Proven around the world. Important: Before you order, make sure your specific trainer will accommodate the width of your modern thru-axle-equipped bike. Measure your trainer at the widest setting and measure the outside width of your bike frame. Our the trainer axle ends will extend past your frame on each side.

- Stable front wheel stand - Slots for 700c, 650c and 26-inch wheels - Use with Trakstand Mag 3 to level bike - Use with other trainers to raise handelbars

Kurt Kinetic's Skewer is an affordable, steel quick-release that perfectly fits into all Kurt Kinetic trainers. Use it instead of your nice aluminum quick release so it stays in pristine condition. • 130mm width

The E-Thru Trainer Axle allows the use of a mountain bike in a Tacx trainer. These axles are only suitable for Tacx classic trainers.

Use these quick releases to put a racing bike with disc brakes or a mountain bike with a quick-release skewer in a Tacx direct drive trainer. Both axles are supplied with an adapter set so you can select the right combination for your bike. These axles are only suitable for the Tacx direct drives.