RockShox BoXXer Ultimate D2 Suspension Fork 27.5'' DebonAir+ W/ButterCups 200mm 1-1/8'' 20x110mm Boost TA Rake: 48mm BlackBoXXer promises one thing above allcomposure. 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,