RockShox ZEB Ult Flight Attendant A3 Suspension Fork 29'' DebonAir+ W/ButterCups 170mm 1-1/8''-1.5'' 15x110mm TA Rake: 44mm Black Remote: Sold SeparatelyFeatures Flight Attendant, uses an algorithm with a suite of sensors to read rider and terrain inputs to anticipate the perfect suspension position Stiff yet versatile 38mm chassis designed to maximize bushing overlap and reduce friction Equipped with ButterCups that dampen high frequency vibrations before they hit the riders hands DebonAir+ air spring is built to strike the perfect balance between butter like small bump feel with increased air volume