The SRAM Red AXS Upgrade Kit offers the ultimate in cockpit data integration, allowing you to personalize your ride and data with RED AXS controls and the Hammerhead Karoo. Featuring Bonus Buttons, you can easily scroll through your head unit or shift your derailleur using the most comfortable controls available. The kit includes the SRAM RED Brake/Shifter System, SRAM RED Brake Calipers, and the Hammerhead Karoo 3 Bike Computer.