BoXXer promises one thing above all—composure. Eliminate chaos before it reaches the rider so every run delivers predictable speed, traction, and control. LinearXL air spring backed by a jounce bottom-out bumper for end-stroke control ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction and maintaining smooth performance throughout the entire service interval Charger 3.2 damper achieves virtually silent performance, keeping riders focused on the trail Control bezel with numbered Compression adjuster for intuitive adjustments—start at "0" and easily add or decrease damping ButterCups technology block 20% of high-frequency “trail chatter” to reduce fatigue Bolt-on fender compatibility with front and rear coverage SRAM Model ID: FS-BXR-ULT-D2