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
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
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
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
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
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
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
Upload your rides to connected platforms, for workout analysis and social sharing on the AXS web dashboard
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
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 get you up and riding in no time See our New Quick Start Guide for more detailed guidance.