Re-tuned Chargerâ„¢ 2 damper for next level compression and rebound control Low friction SKF Wiper and Damper Cartridge Seals Maxima Plush damping fluid reduces friction and improves smoothness Chargerâ„¢ 2 RC2 Damper featuring independent high and low speed compression adjust DebonAirâ„¢ air spring reduces friction from every single moving part, improving bump absorption and response under load, and drastically reducing rider fatigue SRAM Model ID: FS-BXR-ULT-C2 Attributes Axle/Hub spacing 20x110mm Boost TA Brake Type Disc Crown Material Aluminum Damping Charger 2.1 Damping Adjustments External beginning stroke rebound, low speed compression, high speed compression Lower Tubes Material Magnesium Maximum Rotor Size 220mm Maximum Tire Width 81mm Primary Color Red Rake 46mm Spring Adjustments Air pressure, Bottomless tokens Spring Type DebonAir Stanchions Diameter 35mm Stanchions Material Aluminum Steerer Tube 1-1/8'' Steerer Tube Material Aluminum Travel 200mm Wheel Diameter 27.5''