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.
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 is 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 strategically 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 lets you take control with a swipe of your finger while ignoring rain droplets and mud. Enjoy the K2's eye-popping 17 million colour 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.
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 onto any set of 31.88mm handlebars, the road standard. 2.5mm Allen key Included. Learn More
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.
For extra safety on bumpy roads or in handheld situations.
Quick Start Guide
A starter's guide to getting you up and riding in no time. See our New Quick Start Guide for more detailed guidance.
Anti-glare, waterproof screen
High pixel density screen (292 PPI)
Maps with cyclist-specific points of interest
Automatic, Predictive Path Technology with CLIMBER