The SRAM GX Eagle AXS drivetrain is smart, smooth and completely wireless. RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control. The Fox Performance 36 fork gives you four-way damping adjustments for extra-dialled suspension. We expanded our size range to ensure a better fit for all riders. And, you get the fastest wheel that fits your frame: XS frames get 27.5˝ wheels, S frames get to choose between 27.5˝ or 29˝ and sizes M to XL get 29˝ wheels.