Masters of trickle-down technology, SRAM has impressed us again with the GX Eagle AXS Upgrade Kit. We're installing this on our bikes right away, ditching the cables and housing that clunk around in our frames all day. Long-awaited, GX AXS Eagle opens the door for a lot more than just dentists to have electronic shifting. GX AXS uses the same proprietary wireless tech as other AXS items, so just like mechanical AXS we'll be able to mix and match the full system. Ahead of the game, the new GX wireless shifting from SRAM enjoys all the years of testing that X01 and XX1 went through. We're especially enjoying the crisp feel of the electronic drivetrain, and that every shift feels the same when the element of human error is taken out of the equation. Easy to adjust, the upgrade kit hooks up to the SRAM AXS app instead of having to drag out the toolbox.