This item is no longer available to buy. View similar products.

Hammerhead Karoo 2 GPS Cycling Computer

★★★★★ ★★★★★

We're sorry, but unfortunately, we're unable to ship this item to your country

Product ID: 1409249

Hammerhead Karoo 2 GPS Cycling Computer

The Hammerhead Karoo 2 is incredibly sleek and one of the most powerful GPS Cycling Computers out there. It brings together the benefits of a smartphone operating system, Android 8, with that of a purpose-built GPS unit, and your Hammerhead account can be used to sync routes, workouts and access certain settings. The unit itself is light yet strong, and the Dragontrail™ glass panel screen has an acid-etched matt, anti-glare finish that's easy to view in all light conditions. The responsive touchscreen of smartphone quality won't be affected by rain or mud, and the screen can be locked via a double button tap when required. In poor conditions, you can switch to using the four high grip buttons on the unit, ensuring full functionality no matter the weather.

Four satellite sensors are integrated into the unit: GPS, GLONASS, Beidou and QZSS, for extremely accurate data. The Karoo 2 supports a whole host of external sensors, including Varia Radar for indications of approaching traffic, as well as training sensors, including electronic drivetrains and Smart Trainers.

The unit is waterproof, in addition to being resistant to dust, so there's no risk of moisture or other contaminants getting in. A shock-reducing bumper takes some of the impact, particularly over rough terrain. 

The Karoo 2 fits to the handlebar using a patent-pending Hammerhead mounting system. The aerodynamic profile cuts drag for knocking off those all-important seconds, and the unit attaches via an affirmative click. Rotation is required to disconnect, so you can rest assured that the fit is extremely secure. A Karoo to quarter-turn adapter is included, which can be fitted to any Garmin-compatible bracket, meaning previous mounts aren't rendered obsolete. Battery life is long at around 12 hours, and a full charge takes just three hours from empty. 

In The Box

  • Hammerhead Karoo 2 GPS Cycling Computer
  • Hammerhead Karoo 2 Mounting System (compatible with 31.8mm Handlebars)
  • Quarter-Turn Mounting Adapter for aero and other non-standard bars
  • 2.5mm allen key
  • USB-A to USB-C cable
  • Lanyard
  • Getting Started guide


  • Routes, workouts and settings are seamlessly synced to your Hammerhead account
  • Strava Live Segments integration
  • TrainingPeaks workout integration
  • Set up your Karoo 2 on our website before it even arrives at your home
  • Upload activity to 3rd party services
  • Custom riding profiles
  • 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
  • Interval auto lap
  • Choose what you want to track in-ride from a huge list of data fields
  • Graphical data fields for heart rate, power, elevation, and electronic shifting leverage the powerful screen for rich in-ride display
  • Choose from 23 data page layouts and six map options, customise them, and use as many as you like in-ride 
  • Set your heart rate and power zones manually, or have them auto-calculated based on your maximum/resting heart rate and FTP respectively
  • Karoo 2 ships with customised Karoo OS built on Android 8, giving you Hammerhead-built state management, navigation, sensor stream and logging libraries
  • Sensor support - ANT+ and Bluetooth Smart / Varia Radar / Smart Trainer (ANT+ and Bluetooth) / Shimano Di2 / Campagnolo EPS / SRAM eTap / Smartphone / Bluetooth audio
  • Record all ride data to a .fit file for upload to any service you choose
  • Pause/Auto-Pause the ride
  • 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


  • Search for an address or drop pins to create a route in seconds
  • All routes include full turn-by-turn navigation and upcoming elevation profile
  • From any website with a single click and send it straight to your Karoo with the Chrome extension
  • Sync a route - From Strava, Komoot, Ride With GPS, MTB Project
  • Drop a pin on an area while creating a route and save it as a route-based Point of Interest
  • Share a route via the social media share integration
  • Download your route as a GPX file to be used on third-party services or devices
  • Highest quality, detailed, full-colour, global maps, including POIs, elevation and roadway differentiation
  • Routing based on course preference - Sophisticated routing specific to your ride, with options for road, gravel, and mountain bike
  • Highest quality turn-by-turn navigation for every route, with audio cues and visual indicators
  • 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

Video is unable to play due to Privacy Settings.

Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".


  • Dragontrail™ glass panel with acid etched matt finish creating a resilient anti-glare screen
  • Glass-filled polycarbonate chassis is both light and strong
  • Responsive touchscreen, with droplet rejection
  • Fully controllable with four high grip buttons for when adventure carries you into harsh conditions
  • High resolution 3.2” display panel with 16.7 million colours supported
  • 292 PPI pixel density
  • 480x800 portrait resolution
  • 16.7 million colour support
  • High-sensitivity barometer and ambient sensors for elevation data and temperature measurement
  • 3-axis accelerometer, magnetometer and gyroscope for future software features
  • Beeper alerts for navigation, training, and smartphone notification cues
  • Over-moulded shock-reducing bumper
  • Waterproof USB-C port
  • Waterproof SIM card cover
  • Water and dust-proof to IP67 rating
  • 2500 mAh high capacity battery balances size, weight, and performance
  • Patent-pending Hammerhead mounting system is reliable, easy to use and aerodynamic
  • Processor: Quad core 1.1Ghz, CPU with 2GB of RAM
  • Storage: 32GB of storage (26GB for maps)
  • Satellite systems: GPS / GLONASS / Beidou / QZSS
  • Connectivity: Bluetooth 4.0 / ANT+ / WiFi / Cellular
  • Battery life: 12 hours (ride time, in normal conditions with the medium battery drain recommended configuration)
  • Charge time: Under three hours (from 0% - 30% in 30 minutes)
  • Dimensions: 60.8mm (width) x 100.6mm (height) x 19.3mm (length)
  • Mounting system dimensions: 55.8mm (width) x 40.5mm (height) x 116.5mm (length)
  • Manufacturer claimed weight: 131 grams (Karoo 2) / 36 grams (Hammerhead mount) / 167 grams (system)

Unable to display Reviews due to Privacy Settings.

Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".

Unable to display Q&A due to Privacy Settings.

Adjust your Cookie Preferences to Opt-in "YES" to "Functional Cookies".

Close menu