Electronics

Zipp's QuickView Integrated stem faceplate computer mount provides an efficient fix for an emerging challenge on modern bikes: system integration. This new mount doubles as the stem faceplate for a clean look that securely holds your cycle computer and a light or camera. No more multiple mounts bolted on here and there. The mount sits in front of your Zipp stem, positioning it for easy viewing and access. This is an easy way to add elegant integration to your road bike. - Computer compatibility: Garmin, Wahoo - Accessory compatibility: GoPro - Lights: Niterider Lumina Series (with adapter), Light and Motion, Bontrager (with adapter), Gloworm (with adapter), Lezyne (with adapter), Infini (with adapter), Sigma Sport - Lifetime warranty

Wahoo USB ANT+ dongle Kit connects KICKR, KICKR SNAP and other ANT+ enabled devices to a Mac or PC. The 3-foot extension cord extends the USB ANT+ transmitter away from the computer and towards the connected device to avoid signal interference.

- ELEMNT BOLT GPS Bike Computer - TICKR Heart Rate Monitor - RPM Speed and Cadence Sensors Advantage by design Get everything you need to boost your cycling performance all at once! The ELEMNT BOLT features a patent pending design that integrates the bike computer and mount, resulting in a CFD tested, highly aerodynamic system built to be on the front of your bicycle. Not to mention, it's super easy to set-up and customize with the free companion app and features dual-band technology, wireless connection & uploads, pre-loaded global maps and routes, and so much more. The TICKR heart rate monitor, RPM Speed sensor and pair seamlessly with the ELEMNT BOLT, so that you can get live and accurate performance metrics. The Wahoo ELEMNT Bike Computers are the most integrated GPS bike computers on the market with a full list of compatible hardware and smartphone apps. Includes Mounts for ELEMNT BOLT Bike Computer and RPM Sensors ELEMNT BOLT Two sturdy and secure mount options - an integrated out-front mount and stem mount. RPM Cadence comes with a crank and shoe mount. RPM speed comes with a hub mount.

ELEMNT BOLT is purposefully built to provide a simple, intuitive ride experience in a sleek, aerodynamic design. This GPS bike computer features a 2.2 inch, 64 color screen with ambient light sensor to make it easy to see the metrics that matter most, at a glance. Perfect View Zoom, Quicklook LEDs and customizable data pages allow you to personalize your device setup to ensure it's a helpful companion from the beginning to the end of your ride. With 16GB of memory and on-device navigation features, ELEMNT BOLT can store the maps and routes you need to keep you on track and re-route on the fly. BOLT has a battery life of 15 hours and can be charged mid-ride thanks to its USB-C charging. Equipped with Bluetooth Smart, ANT+ and WiFi technology, ELEMNT BOLT pairs seamlessly with all of your cycling sensors and complimentary devices to get the most of your time training. Designed for performance and engineered for simplicity - the ELEMNT BOLT GPS Bike Computer makes every second count. The ELEMNT BOLT is a fully integrated GPS bike computer, with a full list of compatible hardware and smartphone apps. - Unique to Wahoo, the integrated out-front mount creates a cohesive system of the ELEMNT BOLT unit and mount for a sleek look and smooth riding. - The thin, lightweight, and damage-resistant Gorilla Glass helps ELEMNT BOLT can stand up to the toughest conditions. - Automatically adjusts screen brightness and LED lights as lighting conditions change both indoors and outdoors. - Vibrant, crystal clear 64-color 2.2" (55.88mm) display makes seeing your data and routes easier than ever. - A truly wireless bike computer with no plugin required (except to charge it)! There's no need to connect to your laptop to sync ride data, download maps, or update software. All of this can be done via WiFi, Bluetooth, or ANT+. - The free ELEMNT Companion App effortlessly guides you through a step-by-step set-up so that you can create customized user profiles, track performance, update maps and firmware, and share ride data effortlessly. - Integrated GPS with simple, crisp maps so you're ready wherever you are in the world. - Full support and integration with Specialized ANGi crash detection sensors What’s in the Box: -ELEMNT BOLT Unit -Integrated Out-front Mount -Stem Mount -Zip Ties -USB-C charging Cable -Quick Start Guide -Important Product Info Guide ELEMNT BOLT IS A STANDALONE BIKE COMPUTER A smartphone is necessary for setup and to have phone, email, and alert features. ELEMNT COMPANION APP SUPPORTED DEVICES IPHONE/IPAD iOS 11 or newer ANDROID Please visit our support site to check for Android compatibility. SPECIFICATIONS - Unit Dimensions 3.05" x 1.86" x .84" - Display Size 2.2 in / (55.9 mm) - Display Type 64 - Color - Display Resolution 320x240 - Weight 2.4oz (68.38 grams) - Battery Rechargable Lithium Ion - Battery Life 15 Hours - GPS Functionality Built-in - Supported Satellites GPS, GLONASS, BEIDOU Galileo, and QZSS - Water Rating IPX7 (Waterproof up to 5 ft) - Mount Types Integrated out front and Stem - Altimeter Yes - LED Lights 1 row customizable - Perfect View Zoom Buttons Yes - Ambient Light Sensor Yes - Operating Temperature -4°F to 122°F / -20°C to 50°C

ELEMNT RIVAL Multisport Watch keeps the focus locked on your performance, not your equipment. Using the intuitive ELEMNT operating system, RIVAL delivers a simple user experience. Unique multisport features like Touchless Transition, Multisport Handover and Perfect View Zoom create a seamless performance advantage whether training or competing. Designed with a 64 color screen, ceramic bezel and gorilla glass lens, ELEMNT RIVAL not only looks great for everyday use but will also withstand your hardest workouts. SIMPLE TO USE CUSTOM WORKOUT SCREENS The intuitive ELEMNT Companion App guides you through set-up, customizing settings, configuring workout pages, and linking ELEMNT RIVAL to your training apps and sensors. SIMPLE TO SEE PERFECT VIEW ZOOM: Zoom in and out of workout screen to focus on the metrics that matter SIMPLE TO TRACK TOUCHLESS TRANSITION ELEMNT RIVAL is the smartest multisport watch for triathletes, as it automatically tracks your performance across swim, bike, and run without needing to interact with the watch during transitions Specs - Physical Dimensions: 10in Lx2in Wx0.65in D (25.4cm L x 5.08cm W x 1.65cm D ) - Display Size: 1.2" (30.4mm) - Weight: 53g - Battery: Rechargeable via RIVAL USB Charger - Battery Life: Smartwatch Mode of 14 days, GPS/HR Mode up to 24 Hours - Waterproof: 5ATM or 50m - Supported Satellites: GPS and BEIDOU Galileo In the Box -ELEMNT RIVAL Multisport GPS Watch -USB charging cable -Quick Start Guide (QSG) -Important Product Information guide (IPI)

Patent-pending integrated mount for the ELEMNT ROAM GPS bike computer is made of durable, lightweight plastic. It also comes with an optional locking screw that is UCI compliant for connecting your ELEMENT ROAM to your bike for weigh-ins. Fits 31.8mm round bars Weight: 1.55 oz (44g) Works exclusively with ELEMNT ROAM

Meet the new ELEMNT ROAM, Wahoo’s most powerful and accurate GPS cycling computer that is packed with features that turn any ride into an adventure. ELEMNT ROAM delivers advanced accuracy and powerful on-device smart navigation features through dual-band GPS technology. A crystal clear 2.7” (6.9cm) 64 color display and a long lasting battery make it easier than ever to stay on course longer and explore further. BUILT FOR THE RIDE Includes ELEMNT ROAM, Stealth Grey TICKR Heart Rate Monitor, and RPM Speed and Cadence Sensors. ELEMNT ROAM is designed for those who view each ride as a new adventure. Powerful smart navigation features have been combined with a crystal clear 2.7" color display and a long lasting battery, making it easier than ever to stay on course longer and explore farther. ROAD WORTHY. ADVENTURE READY. Designed for performance, intuitively smart and impressively vivid, ELEMNT ROAM offers adventure-hungry cyclists a bike computer equally at home on and off the road. SIMPLE TO EXPLORE FULL-FEATURED GPS Whether you need turn-by-turn directions or just want to find the fastest way home, ELEMNT ROAM offers rider-focused navigation features and powerful integrations designed to help you roam with confidence. SIMPLE TO SEE DYNAMIC DISPLAY Featuring a vibrant, crystal clear color display, Perfect View Zoom data fields and programmable LED indicators, ELEMNT ROAM is the ultimate way to stay on course and on top of your performance. SIMPLE TO SET-UP APP POWERED CUSTOMIZATION ELEMNT ROAM lets you focus on the ride by using the ELEMNT companion app on your smartphone to simplify set-up, customize workout pages, track performance and share ride data.

Our stem mount for Wahoo ELEMNT GPS bike computers is made of lightweight, durable plastic and is a great solution for cyclists who prefer to keep their computer on top of the stem. Fits any stem Weight: 0.2oz Works with ELEMNT, ELEMNT ROAM, ELEMNT BOLT, and ELEMNT Mini Note: BOLT loses aerodynamic advantage with this mount)

With this adaptor piece, you are able to easily convert any Garmin quarter turn bike computer mount to a Wahoo bike computer mount. Weight: 0.1oz

The Wahoo RPM cadence sensor is your sleek little solution for measuring cycling cadence data. It is wireless, magnet-less, lightweight, and easily mounts to your bike's crank arm or to your shoe. Bluetooth Smart and ANT+ dual band technology allows you to connect to and display data on both smartphones and GPS bike computers. Collecting cadence data has never been this easy. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and bike computers. - No tangled wires on your bike to connect the sensor to your device. - It only weighs 7 grams! - Provides accurate cadence data during your ride - (1) mount with double sided 3M tape, or (2) use the silicone sleeve and mount with zip ties. - The RPM can be worn on your shoe for spin classes or use with multiple bikes - Two LED lights show the sensor's device connection (blue) and cadence detection (red) - No charging required! Operates on a coin cell battery for up to 1 years. - RPM cadence sensor will fit with most bikes and frame sizes

The Wahoo RPM speed sensor is the sleek, magnet-less solution for capturing cycling speed data. It easily mounts to your bike's front wheel hub, and the Bluetooth Smart and ANT+ dual band technology allow you to connect to and display data on both smartphones and bike computers. Tracking speed data has never been this easy. - Both ANT+ and Bluetooth Smart capabilities allow for a wireless connection to both smartphones and bike computers. - No tangled wires on your bike to connect the sensor to your device. - The RPM speed installs easily with no magnets required - It only weighs 16.5 grams with the mount included - Provides accurate speed data during your ride - Mounts on most front wheel hub with a secure silicone casing - Two LED lights show the sensor's device connection (blue) and speed detection (red) - No charging required! Operates on a coin cell battery for up to 1 years. - RPM Speed will fit with most bikes and frame sizes

All you need for cycling data, all together at once! The Wahoo RPM Speed and Cadence sensors are both a sleek, wireless, and magnet-less solution. Each mounts easily to your bike and the Bluetooth Smart and ANT+ duel band technology allows you to connect and display data on both smartphone and bike computers. - Dimensions (LxWxH): 1.25" x.75" x 1" - Weight: 7 grams (without mount) - Battery: CR2032 - Battery Life: Up to 12 months - Water Rating: IPX7 (waterproof up to 5 ft) - Wireless Signal Strength: Up to 10 feet - Note: Speed Sensor is NOT compatible with spin bikes

Bluetooth and ANT+ Heart Rate Sensor & Calorie Tracker Connect. Track. Share. The TICKR heart rate monitor accurately tracks your heart rate and calorie burn during any activity or workout. Its new design makes it the lightest and slimmest heart rate monitor on the market! Equipped with Bluetooth and ANT+ technology, TICKR offers an easy and reliable way to connect heart rate to your favorite training apps and fitness devices, and now supports up to three simultaneous Bluetooth connections. The new integrated heart rate sensor and strap design provide a more secure connection and fit, so your training can be optimized, measured, and shared. NEW! INTEGRATED CHEST STRAP DESIGN The integrated sensor and strap design of the TICKR provides a more secure connection and a more secure fit to prevent sliding and shifting while working out. NEW! SLIM, LIGHTWEIGHT HEART RATE SENSOR POD At 1.7oz (48g) and 12.01mm thick, the TICKR is the lightest and slimmest heart rate monitor and strap combination on the market, not to mention the most comfortable! NEW! MULTIPLE SIMULTANEOUS BLUETOOTH CONNECTIONS TICKR supports up to three simultaneous Bluetooth connections for a trouble-free start to your workout. NEW! TOP DISPLAY LED INDICATOR LIGHTS Two LED lights show visual confirmation of the TICKR connection status via Bluetooth and / or ANT+: searching for a connections (blue slow blinking light), connecting (blue fast blinking light), and reading heart rate (red blinking at current beats per minute). DUAL-BAND ANT+ AND BLUETOOTH TECHNOLOGY Both ANT+ and Bluetooth capabilities allow for a wireless connection to both smartphones and GPS devices at the same time or separately. REAL-TIME HEART RATE, CALORIE, AND WORKOUT DURATION TRACKING TICKR measures vital workout metrics, including heart rate, calorie burn, and workout duration in real-time with the Wahoo Fitness app. These metrics can also be sent to compatible third-party apps that track these metrics. FRONT SENSOR & STRAP CONNECTION The front connection on the TICKR sensor and strap allows you to gear up and go quickly. You don’t have to fumble through side placements of snaps and hooks. COIN CELL BATTERY Includes a coin cell battery that can last for over 500 hours of workouts. ADVANCED PERFORMANCE MATERIAL STRAP Made from advanced performance materials, the TICKR strap is designed to fit comfortably chest, yet stay securely in place during intense activity. APPLE WATCH AND APPLE TV INTEGRATION Connect directly via Bluetooth to your Apple Watch or Apple TV as another option for gathering heart rate data while you workout. THIRD PARTY APP COMPATIBILITY Works seamlessly with over 50 apps - including Zwift, The Sufferfest, Peloton for cycling and Runkeeper and MapMyRun for running. TECH SPECS - Dimensions (LxWxH): 2.5" L x 0.2" W x 1.5" H (6.3cm L x 1cm W X 3cm H) - Weight: 1.7 oz (48 g) with strap - Battery: Coin Cell (CR2032) - Battery Life: Over 500 active hours - Sweatproof: Yes (Handwashable Strap) - Water Rating: IPX7 (Waterproof up to 5 ft.) - Strap Length: Adjustable from 23" to 48" IN THE BOX - TICKR heart rate pod - Adjustable soft strap - CR 2032 Battery (installed) - Quick Start Guide - Important Product Info Guide

Bluetooth and ANT+ Heart Rate Sensor with Calorie Tracking and Memory Every effort counts with the TICKR X. Designed to help you get the most out of any workout, the TICKR X tracks heart rate, calories burned, running analytics, and indoor cycling cadence. Equipped with Bluetooth and ANT+ technology, it connects to your favorite training apps, GPS watches, and bike computers, and now supports up to three simultaneous Bluetooth connections. Its new design makes it the lightest and slimmest heart rate monitor on the market, plus the new integrated heart rate sensor and strap design provide a more secure connection and fit! TICKR X even has 50 hours of onboard memory for heart rate and calorie data, giving you the freedom to train device-free. NEW! INTEGRATED CHEST STRAP DESIGN The integrated sensor and strap design of the TICKR X provides a more secure connection and a more secure fit to prevent sliding and shifting while working out. NEW! SLIM, LIGHTWEIGHT HEART RATE SENSOR POD At 1.7oz (48g) and 12.01mm thick, the TICKR is the lightest and slimmest heart rate monitor and strap combination on the market, not to mention the most comfortable! NEW! MULTIPLE SIMULTANEOUS BLUETOOTH CONNECTIONS TICKR X supports up to three simultaneous Bluetooth connections for a trouble-free start to your workout. NEW! TOP DISPLAY LED INDICATOR LIGHTS Two LED lights show visual confirmation of the TICKR X connection status via Bluetooth and / or ANT+: searching for a connections (blue slow blinking light), connecting (blue fast blinking light), and reading heart rate (red blinking at current beats per minute). NEW! ANT+ RUNNING DYNAMICS When TICKR X is paired with a GPS multi-sport or running watch, the ANT+ Running Dynamics will be broadcast on the TICKR X and recorded on the watch for real-time feedback. Seeing this data in real-time can help you make form adjustments, such as proper cadence, to improve your performance during your workout. DUAL-BAND ANT+ AND BLUETOOTH TECHNOLOGY Both ANT+ and Bluetooth capabilities allow for a wireless connection to both smartphones and GPS devices at the same time or separately. REAL-TIME HEART RATE, CALORIE, AND WORKOUT DURATION TRACKING TICKR X measures vital workout metrics, including heart rate, calorie burn, and workout duration in real-time with the Wahoo Fitness app. These metrics can also be sent to compatible third-party apps that track these metrics. FRONT SENSOR & STRAP CONNECTION The front connection on the TICKR X sensor and strap allows you to gear up and go quickly. You don’t have to fumble through side placements of snaps and hooks. COIN CELL BATTERY Includes a coin cell battery that can last for over 500 hours of workouts. INTERNAL MEMORY With on-board memory that can record your workout, the TICKR X allows you to leave your smartphone behind and still capture heart rate, calorie burn, and workout duration. The memory holds up to a 50 hours of workouts! INDOOR CYCLING CADENCE When paired with the Wahoo Fitness App and an indoor cycling workout is selected, the TICKR X will measure cycling cadence. RUNNING ANALYTICS The TICKR X has a built-in accelerometer that measures indicators of running form: Stride cadence, vertical oscillation, and ground contact time. TREADMILL MODE TICKR X features a special workout mode for tracking speed and distance data while running on the treadmill. After a completed calibration exercise in the Wahoo Fitness App, the TICKR X uses your ground contact time and time of workout, to accurately determine your distance and pace while running on a treadmill. WAHOO RUNNING SMOOTHNESS When using the Wahoo Fitness App, the TICKR X measures running form and efficiency across three dimensions that can help you improve your individual running form. ADVANCED PERFORMANCE MATERIAL STRAP Made from advanced performance materials, the TICKR X strap is designed to fit comfortably chest, yet stay securely in place during intense activity. APPLE WATCH AND APPLE TV INTEGRATION Connect directly via Bluetooth to your Apple Watch or Apple TV as another option for gathering heart rate data while you workout. THIRD PARTY APP COMPATIBILITY Works seamlessly with over 50 apps - including Zwift, The Sufferfest, Peloton for cycling and Runkeeper and MapMyRun for running. TECH SPECS - Physical Dimensions (LxWxH): "2.5"" L x 0.2"" W x 1.5"" H (6.3cm L x 1cm W X 3cm H) - Weight: 1.7 oz (48 g) with strap - Battery: Coin Cell (CR2032) - Battery Life: Over 500 active hours - Sweatproof: Yes (Handwashable Strap) - Water Rating: IPX7 (Waterproof up to 5 ft.) - Strap Length: Adjustable from 23" to 48" IN THE BOX - TICKR X heart rate pod - Adjustable soft strap - CR2032 Battery (installed) - Quick Start Guide - Important Product Info Guide

This handlebar bracket has been developed so you can attach a tablet to your handlebars. The design provides a safe distance so that no sweat falls on the screen while you are training. - Suitable for handlebars with a diameter ranging from 26mm to 35mm - Adjustable to different tablet sizes: length 182-267mm, width 112-197mm, max. thickness 13mm

Replacement Wahoo insert for our computer mounts. - Replaceable Wahoo mount - Check mount for compatibility

SL Range Extender Cable 285mm MTB

The new Turbo Connect Display (TCD) is the best way to view data on your Turbo. It not only displays basic ride metrics (speed, cadence, power, battery level, and time), but it also lets you toggle between modes. Its design, meanwhile, is rugged and clean, and it has multiple mounting options for either road or mountain setups. As for the latest version of the Mission Control App, you’ll find that it now has more features and is even more intuitive to use. It lets you custom-tune nearly every aspect of the bike with ease, monitor your power usage, control your range, perform basic system diagnoses, and record/upload rides. - Monochrome LCD display (black/white). - Screen Size: Height (40mm), Width (35mm), Diagonal (52mm), Display (2 inches) - ANT+ & Bluetooth modules for easy communication. - Sits centrally on the handlebars at the stem and has either a twist-lock or an optional theft-resistant lock. - Twist-lock can be turned on the handlebars, while the display also fits others popular mount options. - Protection standard IPX7 (suitable for splashes, rain, or snow).

Charge your Specialized Turbo battery with this high output, custom Li-ion charger. • Custom Specialized Li-ion battery charger • Output: 42V4A • Compact design while delivering huge power • With Rosenberger plug and light indication of the charging status

Sigma Sport's Cadence Power Magnet is the correct replacement magnet for any Sigma Sport computer featuring cadence (computers sold separately). It attaches to your crankarm with zip ties and double-sided tape (both included).

- Di2 internal battery, fits all e-Tube Di2 groups - Capacity: 500 mAH (± 2000km) - Use with EW-WU101 or SC-MT800 interfaces/junction to gain BlueTooth Smart wireless connectivity for on-the-fly adjustments with smartphones and tablets - Requires SM-BCR2 charger

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

Shimano's EW-WU111 D-Fly is a compact wireless data transmitter that adds a new dimension to your Di2 experience. The D-Fly plugs into Shimano's E-tube wiring system and seamlessly connects Di2 equipped bikes to compatible wireless cycle computers or smartphones, tablets and Windows PCs. D-Fly transmits data through both Bluetooth and ANT wireless protocols and allows riders to monitor Di2 gear position, battery life, as well as some other common rider data functions. Don't worry about more batteries to keep track of, the D-Fly shares the same Di2 battery that powers the Di2 shifting system. Your workout display and data file will be enriched with gear selection details and battery status. See where you can improve your gear choices and never be caught out with a drained Di2 battery! With Shimano's E-Tube software on your smartphone, tablet or Windows PC you can also customize your drivetrain settings and features and diagnose problems including on-the-fly derailleur microadjustment.

- AXS enabled for easy monitoring and firmware upgrades - Bluetooth Low Energy and ANT+ compatible - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - Uses a common CR2032 battery that last for 200 riding hours and changes without tools - Power-upgrade compatible with the following RED and Force eTap AXS cranksets: RED 1x: 36T-46T, Force 1x: 36T-46T, Force 2x: 33/46, 35/48 - Bolt Circle Diameter (BCD): 107 BCD - Power Meter Type: ANT USB

- AXS enabled for easy monitoring and firmware upgrades - Fully integrated power meter into a direct mount chainring - Power readings are accurate within +/-1.5% and aren't affected by climate conditions during a ride - Power balance measures left and right legs separately - SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control - Laser-etched chainring finish is more durable - 8-bolt direct mount compatibility only to RED and Force eTap AXS cranks. - Speeds: 12 - Chainring material: Aluminum - Power Meter Type: ANT USB

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. - 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) - BB not included

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

• To position the Shimano Di2 battery inside the fork steerer • Including stainless steel tool to remove the set.

Keep your handlebar organized and your devices secure with the SGS-400-OS (27.2/31.8/35.0mm) from Minoura. - Holds up to 2 accessories (light, computer, mp3, bottle cage holder, etc.) - Lightweight and rustproof alloy construction - New LW-Clamp reduces weight 25 grams compared to previous models - Aluminum bar is position adjustable and uses Hex Bolt to install and remove - 27mm-35mm diameter

Keep your handlebar organized and your devices secure with the SGS-400-STD (22.2/25.4/28.6mm) from Minoura. - Holds up to 2 accessories (light, computer, mp3, bottle cage holder, etc.) - Lightweight and rustproof alloy construction - New LW-Clamp reduces weight 25 grams compared to previous models - Aluminum bar is position adjustable and uses Hex Bolt to install and remove - 22mm-29mm diameter