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

With Rokform's Bike Handlebar Mount your phone is visible, accessible, safe and secure thanks to the mount's easy-to-use locking design that lets you put your phone on and take it off in seconds (Rokform Universal Adapter or V.3 Mountable Case required for your phone and sold separately). With the industry’s only lever lock and adjustable handlebar strap you can rest assured your phone is safe. The simple, adjustable handlebar strap mount installs in seconds without tools and means that this mount can be removed and transferred to other bicycles with ease (or buy a separate mount for all your bikes!). The mount is even universal enough to work great on shopping and golf carts, and more!

Free up bar space and secure your GoPro and many other stem-mounted accessories with our Ritchey Universal Stem Mount. Our unique mount means clutter- and hassle-free mounting of your favorite devices where they're easily viewed and operated. - Compatible with Ritchey C220 and 4-Axis 44 stem faceplates - Forged and machined alloy - Includes extended-length hardware

ShockWiz is a suspension tuning system for air-sprung mountain bikes that combines high-tech hardware with an intuitive smartphone app. It's lightweight, durable and powered by a long-lasting coin cell battery, ShockWiz automatically records and evaluates suspension performance every time you ride. The ShockWiz app displays straightforward adjustments that unite bike, terrain and riding style. ShockWiz works for all mountain bike riders, regardless of their experience or bike's intended use. It works on hardtail and dual suspension bikes, and for all levels of skill, speed, and terrain. With ShockWiz, you know exactly how your suspension is performing – and how to make it better. Features & Benefits: - Automated tuning recommendations - Shock tuning score - a snapshot of how well your suspension is set up for you - Works on hardtail and dual suspension bikes. Works for Cross-Country, Trail, All Mountain and Downhill. - Inexpensive, replaceable CR2032 battery lasts for months - Waterproof and dustproof - IP67 rating - Two alternative hoses (included) offer a range of fitting options - Smartphone app is compatible with Apple and Android phones Essential Details: - ShockWiz is designed for all mountain bike riders, regardless of your experience or bike's intended use. - You can tune for every riding style: Efficient (pedaling), Balanced, Playful or Aggressive. - Advice for air pressure, spring rate, compression and rebound is displayed in the intuitive smartphone app. - In the box: ShockWiz hardware, two hoses, rubber mounting boot and zip ties.

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

This NiteRider Adapter is sold separately from K-EDGE “Combo Mount." - Precision Machined 6061-T6 Aluminum - Anodized Gunmetal - Converts a NiteRider Rail Interface to adapt K-Edge GoPro Mounting Interface - Enables compatibility with K-Edge GoBig Mounts and Combo Mounts - 2x M4 Mounting bolts with Nylok included - Compatible with Lumina Series, Mako Series - Weight: 11.5 grams

The K-EDGE co-polymer insert for Garmin 1/4 Turn style computers is a replaceable item. While it is extremely strong, we designed this insert to fail on a significant impact before the tabs on the back of the Garmin break. - Qty 1 – K-EDGE Co-polymer Insert for Garmin 1/4 Computer (Part No. K13-503) - Qty 2 – M3 x 0.5mm x 6mm with Pre-Applied Nylon 180,18-8 S.S. Screws

Replacement plastic insert kit for K-EDGE Wahoo Mounts. The co-polymer insert for Wahoo 1/4-turn style computers is a replaceable item. While it is extremely strong, it is designed to fail on a significant impact before the tabs on the back of the Wahoo break. Attributes (specs): – Qty 1 – K-EDGE Co-polymer Insert for Wahoo 1/4 Computer (Part No. K13-1604) – Qty 2 – M3 x 0.5mm x 6mm with Pre-Applied Nylon 180,18-8 S.S. Screws

An excellent choice for mountain, cross, and road cyclists who prefer to have the computer above the stem. The mount replaces a standard 5mm spacer, and is locked securely in place by the top cap compression system. - Supported Computers – Wahoo ELEMNT, Wahoo Bolt, Wahoo MINI - Compatible – 1-1/8? Steerer tube Diameter, - Thickness: 5mm, Length 50mm (Center-to-Center) - Recommended for 0 Degree to Negative Degree Stem Angles - CNC Machined 6061-T6 Aluminum Platform, Injection Molded Copolymer Interface - Weight: 25g - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacture defects. Damages due to abuse or crashing excluded

- Conduct accessory mounts allow clean integration of handlebar accessories with the Conduct Brake System - Will fit all GoPro and Garmin models (Including 1000) Kit includes: - Universal light adapter (x1) - GoPro mount adapter (x1) - Computer mount adapter (x1) - Giant computer mount tray (x1) - Garmin computer mount tray (x1) - Computer mount disc plate (x2) - Stem bolts and washers

Garmin's City Navigator is like having a front seat co-pilot who's awake and actually paying attention for once—in fact, it's even better than that. Whether you're traveling in a new state or unraveling tangled back-country roads in the hills of your hometown, you have a detailed road map every step of the way. Certain compatible Garmin devices give you turn-by-turn navigation and audible directions to keep you on route without having to stop to try and read the bleeding ink from your handwritten napkin directions. No back-tracking required. With 10 million points of interest, there are virtually endless options for fueling up, finding a hotel if you're on a tour, or even navigating back to the airport after a travel race.

Take your training to the next level with Garmin's Heart Rate Monitor Chest Strap. It's compatible with many of their GPS units and wirelessly gives you an accurate read out of your heart rate. Plus, it features ANT+ technology for seamless, interference-free data transferring. The front part of the strap contains the heart rate module and is made of flexible plastic while soft fabric goes around the back and is adjustable to your size.

Stay ahead of the pack with Garmin's Out-front Bike Mount that lets you to take full advantage of your Edge's capabilities without compromising your ride. The mount positions your device for easier monitoring and safety. Also compatible with the Forerunner 910XT and 310XT when used with a quick-release kit (sold separately).

Go from wrist to bike in seconds with your Forerunner 920XT. Garmin's Quick Release Kit includes a quick release bracket, a wrist bracket, a bike mount, 2 pins, 2 screws, 6 rubber bike mount o-rings, and installation screwdrivers.

Cadence Magnet for all CatEye computers that record cadence.

Wheel magnet for all CatEye cycle computers

The QuickView was designed to put the Garmin Edge Computer out in front of the stem. Fits Garmin 605 and 705. - Glass-filled nylon, stainless steel Torx T25 bolt - Weight: 20g

The Under Stem Mount allows riders to secure a Shimano Di2 Junction Box to their bike quickly and easily without the need for zip ties, duct tape, or other unreliable attachments. - Lightweight alloy headset spacer with nylon body (9g) - Compatible only with Shimano Di2 Junction Box - 95mm length, 44mm width, 6mm height - 6 Degree angle

Replace your worn or damaged wiring on Origin8 wired computers (97517 / 97570) - Includes bracket with (155cm) wired sensor, screw magnet and 4 cable ties - Includes: Wiring Kit - Compatibility: Data Station 8 / 10 ** HEAD mount is HANDLEBAR mount only (not stem)

Replacement magnet for MSW Miniac Double Speed & Cadence computers. Includes water-resistant cadence magnet and four plastic zip ties for mounting to pedal crank arm.

Each GPS unit comes with a Standard GPS Mount. Included are two sets of o-rings (two diameters), plus a backup o-ring in each size, a rubber shim and an X-Lock composite mounting bracket. The rubber shim supports the X-Lock mount which is engineered to attach at any 9° angle and still allow the computer to be mounted forward. The two super durable o-rings secure it to the bar, and the patent-pending X-Lock design will prevent the computer from being knocked out. The X-Lock securely fastens the GPS computer to the mount by pressing down at a 45° angle and rotating it forward until it "locks" into place.

Easily secure your GPS cycling computer to your favorite bike. Includes: - Two sets of O-rings (two diameters) - A backup O-ring in each size

- Ideal fit for very short stems with steep upward stem angles - 1cm rise in the base will allow larger cycling computers like the Garmin 1030 to nest securely above the stem without interference

- Direct mounting for an aero cockpit - Strongest platform for your cycling computer and light or camera - Compatible: Future, Venge, Tarmac stems - Fits all Garmin computers including Garmin 1040 - CNC machined 6016-T6 aluminum - Weight: 41g - One bolt Specialized SL& stem face plate mounting system - Includes mounting bolt and TNut - Lifetime Warranty - Made in Boise, Idaho USA

- For Integrated Handlebar (one piece) bar/stem - Pro-level mount with -7 degree articulation for custom computer positioning - Lifetime warranty. CNC Machined. Black Anodized - GARMIN approved replaceable computer insert protects computer tabs - Combo- Computer and GoPro style camera/light compatible - M5 hardware included. If a smaller bolt required, use an 8.4mm washer to ensure a secure fit. - Made in House. Boise, Idaho USA

Hand tight adjustability and 4mm hex wrench lockable. - CNC Machined 6061-T6 Aluminum Platform, Injection Molded Copolymer Interface - Compatibility: Combo Mounts, Light&Camera Mounts. - Aluminum knurled thumbscrew - Stainless Steel bolt with 4MM hex feature - Weight: 10g - Anodized Color: Black - Made in Boise, Idaho, USA - Lifetime Guarantee against material or manufacturer defects. Damages due to abuse or crashing excluded

- Direct mounting for an aero cockpit - Strongest platform for your cycling computer and light or camera - Compatible: Future, Venge, Tarmac stems - Fits all Wahoo computers including Wahoo Roam - CNC machined 6016-T6 aluminum - Weight: 54g - One bolt Specialized SL& stem face plate mounting system - Includes mounting bolt and TNut - Lifetime Warranty - Made in Boise, Idaho USA

- CNC Machined Aluminum - Combo (Computer on top – light or camera underneath) - WAHOO approved replaceable computer insert protects computer tabs - Anodized Black with laser etched logos - Payload Capacity: Top - 123g / Bottom 242g on K-EDGE K13-580 Combo adapter - Weight: 60g - Mount Type: Clamp 31.8mm - Mount Weight: 60g Compatibly: - All WAHOO Cycling Computers – ROAM, BOLT, ELEMNT, MINI

Mount your Garmin Edge computer with the Quarter Turn Bike Mount. It includes the bike mount, rubber disc, and elastic bands to secure the Quarter Turn to your stem or handlebars.

OEM CR2032 3V Lithium Battery used in most CatEye cycle computers.