Fits on 31.8mm Handlebars - see more.
For aero and other non-standard bars.
For handlebar mount installation.
Please use the cable provided.
For extra safety on bumpy roads or in handheld situations.
You can also visit our Quick Start Guide online.
Dragontrail™ Glass is beautiful and highly scratch resistant. Treated to create a resilient anti glare matte finish to ensure the screen is visible in all light conditions.
292 PPI pixel density, 480x800 portrait resolution, and 16.7 million color support enable Karoo 2 to render high-quality visuals and clear detailed maps that you can read at a glance.
A smartphone-quality capacitive touchscreen filters out false inputs from rain and mud. A double button tap locks the screen if needed.
The Karoo 2 can be entirely controlled by buttons for when adventure carries you into harsh conditions.
Karoo 2 weight: 131 grams
Hammerhead Mount weight: 36 grams
System weight: 167 grams
The glass-filled polycarbonate chassis is both light and strong, ensuring Karoo 2 can withstand the rigors or any adventure.
Karoo 2 features four high grip buttons with intuitive function-mapping for seamless operation even with sweaty mid-ride hands or gloves. Karoo 2 is entirely navigable using either the buttons or the touchscreen.
Karoo 2 is designed to look elegant but be robust.
You can add or remove a SIM card easily with a removable cover that protects from water ingress.
IP67-rated dust and water ingress protection ensures your Karoo 2 will work in all riding conditions.
Our high capacity battery balances, size, weight, and performance.
Twelve hours ride time in normal conditions with our medium battery drain recommended configuration. (Navigating a route, displaying data, logging 4 sensors, day-light screen setting)
Fast charging gets Karoo 2 from 0% - 30% in 30 minutes, and fully charged in under 3 hours.
Waterproof USB-C is resilient in all conditions as long as it is thoroughly dry before charging.
Ultra-fast yet ultra efficient processor delivers smooth operation and data visualization.
Plenty of room for maps, workouts, and more.
Connects to all Bluetooth cycling sensors as well as headphones for audio, and smartphones to display phone notifications.
Connects to ANT+ cycling sensors including power meters, heart rate monitors, Di2, radar and more.
Connects to your WiFi for wireless software updates, map downloads, and ride uploads.
Global 3G and LTE cellular band coverage available using a SIM card (SIM card not included)
High accuracy GPS, GLONASS, Beidou, QZSS antennae give you access to more satellites to locate your position anywhere on earth.
On-device temperature and elevation data measured in ride.
The addition of these sensors will enable us to provide you with future software features that give greater insight into the motion within your ride.
Beeper alerts for navigation, training, and smartphone notification cues.
We reimagined the cycling mounting system from first principles to create a new standard that is reliable, easy to use, elegant, and aerodynamic. It is also backwards compatible with standard Quarter Turn designs. The result is the patent pending Hammerhead Mounting System (patent pending).
The Karoo to Quarter-Turn Adapter allows you to put the Karoo 2 on any Garmin-compatible bracket, making Karoo 2 backwards compatible.
The low profile Hammerhead Mounting System (patent pending) is elegant and aerodynamic.
The Hammerhead Mounting System (patent pending) presents a far greater contact area between the head unit and mount making it intrinsically stronger than a quarter turn design. Its teardrop shape looks elegant on your bike when your Karoo 2 isn’t mounted.
Karoo 2 slides into the Karoo Mount with an affirmative click. This allows it to be closer to the stem and easier to mount in tight spaces. It disconnects through rotation that requires overcoming two points of friction to prevent unwanted dismounting.
Width: 55.8 mm
Height: 40.5 mm
Length: 116.5 mm
Compatible with 31.8mm handlebars, the road standard.
Your Hammerhead account contains all of your Karoo data, lives in the cloud, and syncs to your Web Dashboard and Karoo 2. Routes, workouts and settings are seamlessly synced and kept up to date.
Challenge yourself and set new personal bests using our class-leading Karoo 2 Strava Live Segments integration.
Upload to all your favorite third-party services, like Strava and TrainingPeaks.
Follow your TrainingPeaks training plans and workouts with our automatic integration.
Sync routes from your accounts on Strava, Komoot, Ride With GPS, MTB Project, easily add routes using the Karoo Route Grab Chrome extension, or upload any routes in GPX, FIT, TCZ, KML, KMZ file formats.
We know the first thing you want to do when you get a new head unit is ride with it. You can set up your Karoo 2 on our website before it even arrives at your home.
Karoo 2 ships with our customized Karoo OS built on Android 8, giving you Hammerhead-built state management, navigation, sensor stream and logging libraries.
You have complete control. Customize your ride screens and maps for every type of riding you do, with as many profiles as you like.
Choose from twenty-three data page layouts and six map options, customize them, and use as many as you like in-ride so that you always see what matters to you.
All the data you need. Choose what you want to track in-ride from a huge list of data fields.
Data can be beautiful. Graphical data fields for heart rate, power, elevation, and electronic shifting leverage the powerful screen for rich in-ride display.
Connect your sensors and track their data in-ride, including heart rate monitors, power meters, cadence sensors, and more.
On-screen and beep indicators let you know when traffic is approaching.
Your Karoo controls your smart trainer based on your workout, and displays its data.
See your current gear, control your Karoo 2 using shifter hood buttons, and see how much battery your Di2 system has left.
See your current gear and how much battery your EPS electronic system has left.
See your current gear and how much battery your SRAM eTap electronic shifters have left.
Receive notifications of incoming phone calls and text messages so you don’t miss anything important.
Don’t want to use the in-built beeper? Connect a Bluetooth speaker or headphones to hear audio notifications.
Search for an address or drop pins to create a route in seconds, directly on your Karoo 2.
Select a route to ride with. All routes include full turn-by-turn navigation and upcoming elevation profile.
Grab a route from any website with a single click and send it straight to your Karoo with our Chrome extension.
Sync routes from Strava, Komoot, Ride With GPS, MTB Project.
Drop a pin on an area while creating a route and save it is a route-based Point of Interest.
Share a route to Facebook, Twitter, Pinterest, or email via the social media share integration.
Download your route as a GPX file to be used on third-party services or devices.
All your ride data, including sensor data, GPS route data, and workout details, is recorded to a .fit file for upload to any service you choose.
Taking a break? Pause your ride manually, or let auto-pause handle it whenever you stop moving.
Change your route, workout, profile and even the data you want to see at any time, even while riding.
Share your live location with loved ones via text or email so they can follow your progress.
Full-color, global maps, with all the details you need when riding, including POIs, elevation and roadway differentiation.
Sophisticated routing specific to your ride, with options for road, gravel, and mountain bike.
Turn-by-turn navigation for every route, with audio cues and visual indicators that mean you’ll never miss a turn.
Upcoming elevation profiles for every route so you always know what climbs lie ahead, and historic elevation that displays where you’ve been.
Instantly get back on track if you take a detour with smart rerouting that gets you where you need to be.
Long-press a location on the map or a POI to navigate there, instantly.
Always get back home with Karoo 2’s Return Home option.
Looking for something? Find cafes, water fountains, bathrooms, campsites, and more on our maps.
Use your TrainingPeaks training plans and workouts with our automatic integration.
Run duration-based workouts either on an indoor trainer or outdoors.
Play or pause your workout and skip or redo an interval with intuitive controls.
Fully guided workouts with beautiful indicators that help you hit your targets.
Train indoors or outside. Full ANT+ and Bluetooth smart trainer control lets you hit your intervals better than ever before.
Auto-lap on every interval’s completion.
Set your heart rate and power zones manually, or have them auto-calculated based on your max/resting heart rate and FTP respectively.
Manually or auto-sync your workout data to your preferred training service when finished.
Finished your ride? Review your most important data, including ride time, distance, climb, speed, power, and heart rate.
Upload to all your favorite third-party services, like Strava and TrainingPeaks.
Share your FIT file with a coach or upload to a third-party site.
Hammerhead Karoo 2
Karoo 2 is designed to put your cycling experience first. Powerful features make it simple for cyclists to do structured workouts, follow routes, connect to Strava and other third parties, and get the most out of every ride.
See what makes Karoo 2 better than other bike computers.
Free standard shipping within the US and South Africa.
Orders are processed immediately so please double-check your shipping address.
We may not have the ability to change a mistaken address before a unit is dispatched..
Tracking information is sent in 3 to 5 business days.
Free return and full refund within 45 days if you don’t love your Karoo 2. Learn more.
I am very happy with my new hummerhead, in fact thanks to him, I get out more on the bike. There are two things that at the moment have seemed to me to be improved. The first is that I would like to be able to modify the data that appears on the Climb screen, I would change the VAM for the Watts. The other thing that I would change is the bontrager lighting from the Karoo, now it must be done before starting the route or after, and I would like to be able to turn the lights on or off during a route since when I change from the road to the bike lane, I turn off the lights ... or the other way around. I think they are things that can be easily improved. I hope I have been helpful and thank you very much for your interest in my opinion, greetings
Within the US, Europe, and Australia
Free return and full refund if you don't love your Karoo 2
Available 7 days a week to ensure you get the most from your Karoo 2