Flora Duffy

Olympic Gold Medalist 2020

Michael Woods

Tour de France Stage 9 Winner 2023

Ricarda Bauernfeind

Tour de France Femmes Avec Zwift Stage 5 Winner 2023

Hammerhead: Proven Performance

Navigate your way to proven performance like the pros.

Hammerhead is proud to represent the following professional teams and athletes:

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

"Faster than every other dedicated bike computer."

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

"The screen is simply the best on the market."

Meet Hammerhead Karoo 2

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.

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.

Keep Your Eyes On The Road
With Beeper Notifications

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

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.

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.

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.

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.

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

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.

Sync Your Rides
For Analysis

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

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.

Save Time And Space With Our
Simplified Mounting System

We will also be including an adapter that allows you to attach Karoo 2 to a standard quarter-turn mount if you have aero handlebars or other non-compatible bar types. See Compatible Mounts.

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.

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.

The Difference is Clear

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+

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

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

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

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

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

Don't Take It From Us

P

Paul M.

A Pocket Sized Phenomenon
What a superb, easy-to-use, so-many-data-variables, integrated-with-everything device! I love it and can’t imagine a better cycle computer. The user interface and screen quality are outstanding, and the new mount makes it feel very secure on the bike. Can’t fault it.

M

Mark H.

So Far, So Good
Just received the unit the other day and took it out over the weekend. What a great unit! I have had two different units over the years, Garmin & WAHOO Roam. The Karoo 2 is far superior in my opinion. And to top that off the customer service is on a much higher level than anything I have experienced. I would highly recommend this bike computer!

A

Allen D.

Amazing!
Very convienent to use and great battery life! It's great for any type of biking and is resistible to rain and weather. Love the product!

M

Matthew U.

I Love My Karoo 2
This is my first cycling computer and I love it. It was very easy to learn how to use and setup. I love the simplicity of the user interface on both the device as well as the Hammerhead dashboard. Highly recommend the Hammerhead Karoo 2. I'm absolutely obsessed with the Karoo 2 and it has made me even more motivated and excited to get out and ride more! 10/10. 5 Stars, zero issues or complaints. I can't wait to see where the future updates will take us because I know it's only going to get better and keep improving!

A

Andres

Best Cycling Computer Out There
I owned another brand of computer but HAD to move to Karoo 2 after seeing what was capable of and the number of features available, specially the climbing/mountain features and information it gives you to prepare for what's coming! It is clear and delivers what you really need at the right time. I live in Asia so trying to get it here was a struggle and took some time, it would be great if they were shipping to this area, as I'm sure there will be a lot of customers. I'm very happy with the computer and periodically updates that make it just even better! Congrats and great job to the design and engineers of the team!

FREE STANDARD SHIPPING

Within the US

45-DAY RISK-FREE TRIAL

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

WE PRIDE OURSELVES ON SUPPORT

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

Media Moments

December 01, 2023

Under the Moroccan Sun with Fernwee and Alberto

Embarking on an epic adventure, Martijn van Strien (also known as Fernwee) and Alberto Viciana conquered Morocco's Roc du Maroc, a six-stage mountain bike race through the Atlas Mountains to the Sahara desert. From canyons to palm valleys and salt lakes, they faced extreme 100-degree temperatures. The duo's journey tested both physical and mental limits, revealing the true essence of exploration and human endurance in the captivating landscapes of Morocco.

October 20, 2023

United We Are Gravel Camp

The United We Are Gravel Camp tells a tale of individual journeys, unity, and the embrace of diversity, bringing together women from various backgrounds, nationalities, and skills to a distinct corner of the world.

October 06, 2023

Maghalie Rochette’s Epic Odyssey: From Dublin to Edinburgh for the World Championships

After a year long battle with injury, followed by a major back surgery, Maghalie Rochette found herself in the heart of Dublin, Ireland. There, she embarked on a joyous journey to regain her feverish enthusiasm and drive.

Tags: Cycling, GPS, Navigation

Find out what's coming next from Hammerhead