Light where it counts and ruthless on the descents. The LinearXL air spring delivers a coil-like ride—supple off the top, supportive through the mid-stroke, and backed by Adjustable Bottom Out (ABO) for confident end-stroke control. ButterWagonTech ensures a constant supply of oil to the bushings, reducing friction, and maintaining smooth performance throughout the entire service interval. LinearXL air spring backed by Adjustable Bottom Out (ABO) for end-stroke control ButterWagonTech ensures a constant supply of oil to the bushings Charger 3.2 damper achieves virtually silent performance ButterCups technology block 20% of high-frequency “trail chatter” to reduce hand and arm fatigue SRAM Model ID: FS-LYRK-ULT-E1 Attributes Brake Type Disc Damping Charger 3.2 RC2 W/ButterCups Damping Adjustments Extl begin stroke rebnd, low speed comp, high speed comp Crown Material Aluminum Rake 44mm Maximum Rotor Size 220mm Maximum Tire Width 70mm Spring Adjustments Air pressure, Bottomless tokens Spring Type Linear XL W/ButterCup Steerer Tube 1-1/8''-1.5'' Steerer Tube Material Aluminum Lower Tubes Material Magnesium Stanchions Material Aluminum Stanchions Diameter 35mm Axle/Hub spacing 15x110mm TA e-Bike approved Yes