Hammerhead was started in 2013 by Piet Morgan and Laurence Wattrus after a 3,000-mile ride across the United States left them frustrated with the state of cycling navigation. The company is headquartered in Chicago, Illinois, and built the Karoo on a modified Android platform rather than custom firmware — a choice that gives it a more familiar interaction model and allows meaningful software updates over time. SRAM acquired Hammerhead in 2021. Visit Hammerhead's official website for full technical specifications and software updates.

The Karoo's standout feature is Predictive Path Technology — the computer auto-detects upcoming climbs even when riding without a preset route, calculating gradient, distance, and estimated time automatically. This is the Karoo's equivalent to Garmin's ClimbPro, but it works on unplanned rides rather than requiring a pre-loaded route. The 292 PPI display is sharper than any comparable cycling computer and remains readable in direct sunlight. For riders in the SRAM AXS ecosystem, the Karoo communicates natively with AXS derailleurs and power meters, displaying shift data and component battery levels without additional configuration.

For a broader range of cycling computers, browse cycling computers and watches or computer mounts and accessories. Garmin and Wahoo computers are also available for riders already in those ecosystems.