What Our Gearhead® Experts Are Saying:"This kit made it easy to breathe new life into my setup. The Force AXS controls feel amazing, and pairing them with the Karoo lets me scroll screens or shift using Bonus Buttons—it’s a smarter, smoother ride all around."We love making a good thing even better. With the Force AXS Upgrade ED Kit + Hammerhead Karoo, SRAM gives us the perfect pairing of smart control and crisp data feedback. The Force AXS shifters are lightweight, powerful, and fully wireless, bringing intuitive shift and braking feel to the cockpit. Meanwhile, the Karoo Force Edition head unit elevates our visibility and connectivity with class-leading navigation and customization options. This kit includes SRAM’s latest Shift-Brake System—offering easy setup, ergonomic hood shaping, and textured paddles for control in all conditions. Bonus Buttons are integrated on each control to let us scroll through Karoo screens or adjust derailleurs mid-ride. Paired with flat mount calipers for responsive braking and AXS compatibility with all generations of SRAM wireless drivetrains, this upgrade package is ready to redefine how we interact with our bikes.