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Enjoy every ride more than the last with Karoo: Navigate effortlessly with clear, easy-to-read maps and precise GPS (no Wi-Fi required). Enjoy a customizable display that keeps all your stats visible, no matter where you ride.

FOR A LIMITED TIME Get 50% Off a Heart Rate Monitor with Purchase of a Karoo with Code: KAROO-HRM
*Add all items to cart and apply code at checkout to redeem

$474.99 USD


12 Reviews

4.4/5 | Based on 12 reviews

  • Hammerhead Karoo Bike Computer
  • 31.8mm Hammerhead Mounting System
  • USB-C to USB-C Charging Cable
  • Quarter-Turn Adapter
  • Safety Lanyard
  • Quick Start Guide
  • All neatly arranged in zero-waste, fully recyclable packaging

  • May ship separately from other items in your cart.
  • Please double-check your shipping address as we may not be able to change a wrong address before the order is dispatched.
  • Tracking information is sent in 3 to 5 business days.

The Difference is Clear

See what matters most to you with best in class routing & visualizations

Easy to use and customize - Get the advanced features you want without complexity

Advanced connectedness with your favorite devices and apps so you can ride the way you want

The Difference is Clear

See what matters most to you with Best in Class Routing & Visualizations

All-fabric electrodes with woven silver on the Hammerhead Heart Rate Monitor
The Difference is Clear

Easy to Use and Customize - Get the advanced features you want without complexity

Woman clasping the Hammerhead Heart Rate Monitor on her chest before a ride
The Difference is Clear

Advanced connectedness with your favorite devices and apps so you can ride the way you want

The Hammerhead Heart Rate Monitor is water and sweat resistant
    Visual for What's In The Box? Visual for What's In The Box?

    What's In The Box?

    • Hammerhead Karoo Bike Computer
    • 31.8mm Hammerhead Mounting System
    • USB-C to USB-C Charging Cable
    • Quarter-Turn Adapter
    • Safety Lanyard
    • Quick Start Guide
    • All neatly arranged in zero-waste, fully recyclable packaging

    Product Features

    Image of Forge your own path with route building

    Optimize Your Ride With Data Made Beautiful

    We translate in-ride data into beautiful visualizations for real-time optimization.

    Image of See the road ahead with best-in-class navigation

    See The Road Ahead With Best-In-Class Navigation

    Cycling-specific navigation designed to help you never miss a turn. But with instant and automatic rerouting, we've got you covered if you do.

    Image of Keep your eyes on the road with beeper notifications

    See What Matters With Fully Customizable UI

    Choose the data you want to see and how you want to see it. Profile-based settings make switching between riding styles and surface preferences easier and more powerful than ever.

    Image of Conquer the cols with CLIMBER

    Access It All With Ease On Our Hammerhead Dashboard

    Effortlessly access and manage all your data to review ride performance, create and organize routes, assess upcoming workouts, adjust your training zones, and more with the Hammerhead Dashboard.

    Image of See what matters with fully customizable UI

    Hit Your Goals With Customizable Training Plans and Robust Workout Player

    It's easier than ever to follow your training plan and hit your goals with intuitive support for structured workouts, including automatic syncing from TrainingPeaks and TrainerRoad.

    Image of Optimize your ride with data made beautiful

    Conquer The Cols With CLIMBER

    CLIMBER auto-detects upcoming climbs — even when you're not on pre-planned routes — and provides rich gradient insights so you can strategically pace your ascent.

    Image of Stay on top of what matters with smartphone notifications

    Forge Your Own Path With Route Building and Points of Interest

    Easily build your own route on your preferred surface with the Hammerhead Dashboard. Add custom points of interest and download it for use on other devices.

    Image of Hit your goals with customizable training plans

    Know Your Range

    Karoo offers comprehensive battery alerts for all your connected components, with full ANT+ and Bluetooth support, including E-Bikes.

    Image of Keep on the cutting edge with frequent software update

    Keep Your Eyes On The Road With Beeper Notifications

    Beeper alerts notify you of turns, approaching traffic, training milestones, low battery, and smartphone notifications.

    Image of Sync your rides for analysis

    Keep On The Cutting Edge With Frequent Software Updates

    We provide the most agile software on the market, with constant improvements. New features and enhancements keep your riding experience on the cutting edge.

    Image of Sync your rides for analysis

    Upload and Sync Effortlessly with Our Companion App

    Our App for Android and iOS give you the flexibility to upload and sync routes and workouts, instantly navigate to pins, and easily manage your Karoo, no Wi-Fi required.

    Image of Sync your rides for analysis

    AXS It All

    Access the full SRAM experience on Karoo with quick and easy single sign on, automatic sensor pairing, advanced battery management, and the most intuitive controller programming on the market.

    Image of Minimize drag with a low-profile mount

    Take Full Control With A High-Res Touchscreen and Responsive Buttons

    Our stunning smartphone-quality Corning Gorilla Glass touchscreen lets you take control with a swipe of your finger, while ignoring rain droplets and mud. Prefer the push (or just wearing gloves)? Fully control Karoo with responsive physical buttons.

    Image of Save time and space with our simplified mounting system

    Ignore The Weather Report With Outdoor-Proofed Design

    If you can handle it, the Karoo can too: with a water, dust, and mud resistant design.

    Image of Take full control with a high-res touchscreen

    Save Time And Space With Our Simplified Mounting System

    Make your setup as strong, secure, and adaptable as you are with the Hammerhead Mounting System.

    Image of Ignore the weather report with outdoor-proofed design

    Minimize Drag With A Low-Profile Mount

    We know drag is a drag, so we reimagined the standard head unit mount to make it more aerodynamic and adjustable — while maintaining strength with a large contact surface area.


    Karoo is your ultimate ride companion, offering you an unparalleled single-point union to experience and control everything from your bike’s connected components and SRAM AXS products, to E-Bikes to ANT+ lights, and more.
    The stunning smartphone-like screen, mega memory, and all-day battery life combine to make Karoo a cycling computer without compromise.
    Easy to use in every condition, Karoo lets you to focus on the road - and the ride - instead of your gear.
    With powerful workout support, industry-best navigation, and a Companion App and Dashboard that let you manage your device without removing it from the handlebars; Karoo will help you hit your training goals, explore new routes, and enjoy every ride.
    Karoo is designed to be simple and intuitive to use. Our Knowledge Base contains many more articles if you need help with specific features.

    Our Quick Start Guide is available in 9 Languages:
    Simplified Chinese
    • Hammerhead Karoo Bike Computer
    • 31.8mm Hammerhead Mounting System
    • USB-C to USB-C Charging Cable
    • Quarter-Turn Adapter
    • Lanyard
    • Quick Start Guide
    Karoo is built on a fiberglass-filled high-impact polycarbonate chassis with interlocking protective shells and is weather-resistant and is IP67 in waterproof and dustproof rating. It has been rigorously tested for shock, vibration, and environmental fatigue making it a benchmark for durability and ruggedness.

    The unit measures 102.8 x 61.7 x 19.9 mm and weighs 118.1 grams. The 31.8 Hammerhead Mounting System handlebar mount weighs 39 grams.

    The 3.2” screen (measured diagonally) has the highest resolution for a bike computer with 292 pixels-per-inch, anti-glare Corning Gorilla Glass, and a responsive touchscreen.

    The total ROM capacity is 64 GB with approximately 4GB reserved for the operating system and default applications, freeing the rest to support your maps and data!

    Karoo has a Quad-core 2.0Ghz CPU with 4GB of RAM. This ultra-fast yet ultra-efficient processor delivers smooth operation and data visualization.

    Karoo has also been tested to ensure that prolonged or intense UV exposure does not discolor or degrade the materials.

    Karoo has been reliability tested for operation between -10°C and 50°C. The unit is IP67 Water-resistant and the USB-C Cover provides your Karoo with extra resistance to mud, rain, salt, and more.

    Reminder - Do Not charge the unit in wet conditions or if the charging port is full of moisture.
    • The team at Hammerhead developed the best-in-class Hammerhead Mounting System (HMS) for sleek and secure cockpit setups. However, as cyclists, we realize that our customers may have custom mounts, multiple bikes, or other mount restrictions.
    • To assure your Karoo is backwards compatible, we include a Quarter-Turn Adapter (fits on all quarter-turn style mounts) as a thank you to each customer.
    • Additional HMS mounting solutions are available for purchase to suit varied ride styles and setups
    Personalize your Karoo in English, French, German, Italian, Spanish, Simplified Chinese, Korean, Japanese, and Portuguese
    We currently ship our products to 32 countries:

    US Store
    The United States of America

    EU store

    UK Store
    The United Kingdom

    CA Store

    AU Store

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