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Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2
Hammerhead Karoo 2

Hammerhead Karoo 2

Karoo 2 is designed to put your cycling experience first. Powerful features on this GPS bike computer 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.

    £359 GBP

    Price inclusive of 20% VAT. Learn more.

    Trade in trade up promotion

    Find your device trade-in value

    Trade in your current bike computer when you buy a Karoo 2 and receive moneyback against your purchase. We recycle all old devices.

    Select a device
    Select a device
    Hammerhead Karoo 1
    Bryton Rider 530
    Bryton Rider 750E
    Bryton Rider 860
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    Bryton Aero 60E
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    Teasi One 4
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    Wahoo Elemnt Bolt
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    XOSS Sprint
    Other Brand GPS Cycling Computer
    Other Brand Non-GPS Cycling Computer

    Trade-in value:

    4.7

    567 reviews

    4.7/5 | Based on 567 reviews | Read all

    Free shipping icon Free Standard Shipping in the UK

    Risk free icon 45-day Risk Free Trial

    EXPLORE KAROO 2’S BEST IN CLASS FEATURES

    Image of Forge your own path with route building

    Forge your own path
    with route building

    Quickly upload routes from 3rd party apps via the Hammerhead web dashboard, or build your own with a couple of taps. Once you've set your route you can quickly add custom points of interest and download it for use on other devices.

    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 automatic rerouting, we've got you covered if you do.

    Image of Keep your eyes on the road with beeper notifications

    Keep your eyes on the road
    with beeper notifications

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

    Image of Conquer the cols with CLIMBER

    Conquer the cols
    with CLIMBER

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

    Image of See what matters with fully customizable UI

    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 easier and more powerful than ever.

    Image of Optimize your ride with data made beautiful

    Optimize your ride with data
    made beautiful

    We translate in-ride data into beautiful heart rate, power elevation, and gear shifting data visualizations for real-time optimization.

    Image of Stay on top of what matters with smartphone notifications

    Stay on top of what matters with
    smartphone notifications

    Receive notifications for incoming phone calls and text messages, so you don't miss anything important on your ride. Or leave your phone at home. We know sometimes you just want to enjoy your ride; the K2 doesn't require a phone for you to see the road ahead.

    Image of Hit your goals with customizable<br>training plans

    Hit your goals with customizable
    training plans

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

    Image of Keep on the cutting edge with frequent software update

    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

    Sync your rides
    for analysis

    Upload your rides to connected platforms, for workout analysis and social sharing on the AXS web dashboard.

    Image of Minimize drag with a low-profile mount

    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 — while maintaining strength with a large contact surface area.

    Image of Save time and space with our simplified mounting system

    Save time and space with our
    simplified mounting system

    Our Karoo mount takes up less space on your handlebars than competitors' — but if you like your current option, our 1/4 turn adapter is compatible with other mounting systems.

    Image of Take full control with a high-res touchscreen

    Take full control with
    a high-res touchscreen

    Our stunning smartphone-quality touchscreen let's you take control with a swipe of your finger, while ignoring rain droplets and mud. Enjoy the K2's eye-popping 17 million color screen, with 2x the pixel density of its closest rival.

    Image of Ignore the weather report with outdoor-proofed design

    Ignore the weather report with
    outdoor-proofed design

    If you can handle it, the Karoo 2 can too: with a water, dust, and mud resistant design, waterproof charging port, USB-C cover, and robust chassis.

    WHAT'S IN THE BOX?

    Visual for WHAT'S IN THE BOX? Visual for WHAT'S IN THE BOX?

    The Hammerhead Karoo 2
    Your brand new Hammerhead Karoo 2: the best head-unit ever built.

    Hammerhead Karoo 2 Mount
    The most aerodynamic mount on the market: fits on to any set of 31.88mm handlebars, the road standard. 2.5mm Allen key Included. Learn More

    Quarter-Turn Adapter
    This adapter allows you to put the Karoo 2 on any Garmin-compatible bracket, for backward compatibility. See Compatible Mounts.

    USB-A to USB-C Charging Cable
    Fully charge your device in just over 2 hours with this charging cable.

    Lanyard
    For extra safety on bumpy roads or in handheld situations.

    Quick Start Guide
    A starter's guide to get you up and riding in no time. See our New Quick Start Guide for more detailed guidance.

    Free standard shipping within the US and South Africa.
    FREE STANDARD SHIPPING

    Free Standard Shipping in the UK

    45-day risk-free trial - Free return and full refund if you don't love your Karoo 2
    45-DAY RISK-FREE TRIAL

    Free return and full refund if you don't love your Karoo 2

    Support available 7 days a week to ensure you get the most from your Karoo 2
    WE PRIDE OURSELVES ON SUPPORT

    Available 7 days a week to ensure you get the most from your Karoo 2

    REVIEWS

    Customer Reviews
    4.7 Based on 567 Reviews
    5 ★
    79% 
    447
    4 ★
    14% 
    82
    3 ★
    4% 
    20
    2 ★
    1% 
    8
    1 ★
    2% 
    10
    Write a Review Ask a Question

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    Your input is very much appreciated. Share it with your friends so they can enjoy it too!

    Filter Reviews:
    RM
    01/29/2023
    Rob M.
    United Kingdom United Kingdom

    Best cycle computer on the market

    I’ve used Garmin and Wahoo and the Karoo 2 is simply the best head unit on the market. The navigation is so easy to follow. Would highly recommend!

    Testimonial visual: The best GPS cycling computer you're not using.

    "The best GPS cycling computer you're not using."

    Testimonial visual: Faster than every other dedicated bike computer.

    "Faster than every other dedicated bike computer."

    Testimonial visual: The best screen and navigational metrics in the game.

    "The best screen and navigational metrics in the game."

    What makes the K2 the best head unit ever built?

    Our bike computer has the highest quality screen, most detailed navigation, fastest evolving software, and best connectivity on the market. See how we stack-up.

    Hammerhead Karoo 2 flat view

    Hammerhead Karoo 2

    Anti-glare, waterproof screen
    High pixel density screen (292 PPI)
    Maps with cyclist specific points of interest
    Automatic, Predictive Path Technology with CLIMBER
    Instant route creation with pin-drop
    Lightning fast rerouting.
    Frequent feature releases and upgrades
    7 Days a week. Including Weekends and Holidays.
    Automatic cloud back-up for routes and settings
    32 GB total internal storage
    Garmin 1030+ flat view

    Garmin 1030+

    Only with additional screen protector purchase
    157 PPI: 46% lower resolution than K2
    Maps with cyclist specific points of interest
    Climbs only detected in pre-loaded routes
    No pin-drop route creation
    Longer than K2 reroute load time for every route length
    Intermittent bug fixes
    Limited support
    No data back-up. Risk of data-loss.
    32 GB total internal storage
    Garmin Edge 1040 flat view

    Garmin Edge 1040

    Only with additional screen protector purchase
    157 PPI: 46% lower resolution than K2
    Maps with cyclist specific points of interest
    Climbs only detected in pre-loaded routes
    No pin-drop route creation
    Longer than K2 reroute load time for every route length
    Intermittent bug fixes
    Limited support
    No data back-up. Risk of data-loss.
    32 GB total internal storage
    Wahoo ELMNT Roam V2 flat view

    Wahoo ELMNT Roam V2

    Only with additional screen protector purchase
    166 PPI: 43% lower resolution than K2
    No native points of interest for cyclists
    No climb detection
    No pin-drop route creation
    Longer than K2 reroute load time for every route length
    Intermittent bug fixes
    Limited support
    No data back-up. Risk of data-loss.
    Limited internal storage: 2.78 GB
    Wahoo ELEMNT Bolt V2 flat view

    Wahoo ELEMNT Bolt V2

    Only with additional screen protector purchase
    182 PPI: 38% lower resolution than K2
    No native points of interest for cyclists
    No climb detection
    No pin-drop route creation
    Longer than K2 reroute load time for every route length
    Intermittent bug fixes
    Limited support
    No data back-up. Risk of data-loss.
    Limited internal storage: 16GB
    iPhone 13 flat view

    iPhone 13

    Only glare proof with additional screen protector purchase
    High pixel density screen
    No native points of interest for cyclists
    No climb detection
    Pin-drop instant route creation via Apple Maps
    Lightning fast rerouting speed
    Depends on navigational app used
    Limited support
    Cloud backup with Apple ID
    128GB+ storage

    KAROO 2 FAQs

    Karoo 2 is a cycling computer that helps you get more from your rides. The most detailed and accurate maps and navigation unlock unparalleled exploration, and its stunning high definition touchscreen gives you the best visuals to check performance metrics or compete virtually via live Strava segments.
    LEARN MORE
    We built the Karoo 2 because, as cyclists, we believed the cycling computers available on the market were a decade behind where they should be.
    As we stripped down the concept of a cycling computer and reimagined what it could do, our focus was always on how it could improve the act of cycling, delivering powerful features that make each and every ride an excellent experience. The result is a device that uses cutting-edge technology to unlock software solutions that enhance every aspect of your ride, from the pre-ride planning, through the in-ride experience, and all the way to post-ride analysis.
    With the highest quality screen available on any cycling computer, mapping and navigation that brings new levels of detail and accuracy, constant software updates that keep it leading the pack, and on-board cellular connectivity, the Karoo 2 unlocks a whole new world of cycling.
    LEARN MORE
    Karoo 2 is designed to be simple and intuitive to use. Our Knowledge Base contains many more articles if you need help with specific features.

    We have Instructions in 9 Languages:
    English
    Italian
    Portuguese
    Spanish
    German
    French
    Korean
    Japanese
    Traditional Chinese

    Here's a PDF of the updated Karoo 2 User Guide:
    Karoo 2 - A Quick Start Guide.pdf
    LEARN MORE
    CLIMBER can help you pace yourself up every climb on every ride, whether you're following a Route or not. Turning on CLIMBER allows Karoo to detect climbs and show you the important details for each, such as the elevation profile and distance to the top.
    LEARN MORE
    Karoo 2 is built on a fiberglass-filled high-impact polycarbonate chassis with interlocking protective shells and weather-resistant gaskets and ports that give it an IP67 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 100.45 x 60.25 x 19.5mm and weighs 130.8 grams. The Hammerhead mounting system weighs 35.8 grams.

    It has the highest resolution for a bike computer screen at 3.2” Inch multi-point capacitive touchscreen.

    The total storage capacity is 32 GB and about 3GB is reserved for the operating system and default applications, the rest is there to support your maps and data!

    Karoo 2 has a Quad-core 1.1Ghz, CPU with 2GB of RAM. This ultra-fast yet ultra-efficient processor delivers smooth operation and data visualization.

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

    The unit has been reliability tested for operation between -15°C and 55°C. We decided to keep the industrial design clean and the options for external power easier. The unit is IP67 Water-resistant and the USB-C Cover provides your Karoo 2 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. See: Charging Karoo 2
    LEARN MORE
    The team at Hammerhead has developed a new bracket design that we feel is truly best in class and represents the future of bracket technology. However, as cyclists, we realize that our customers may have custom mounts, multiple bikes, or other mount restrictions.

    To assure your Karoo 2 is backwards compatible, we include a Quarter-turn adapter (fits on all Garmin compatible mounts) as a thank you to each customer.
    LEARN MORE
    We currently ship our products to 32 countries:

    US Store
    The United States of America
    South Africa

    EU Store
    Austria
    Belgium
    Bulgaria
    Croatia
    Cyprus
    Czechia
    DenmarkEstonia
    Finland
    France
    Germany
    Greece
    Hungary
    Ireland
    Italy
    Latvia
    Lithuania
    Luxembourg
    Malta
    Netherlands
    Poland
    Portugal
    Romania
    Slovakia
    Slovenia
    Spain
    Sweden

    UK Store
    The United Kingdom

    CA Store
    Canada

    AU Store
    Australia
    LEARN MORE
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