The RockShox Pike Ulti FA Fork is built around a versatile and lightweight 35mm chassis designed for hardtail mountain bikes. It features Flight Attendant technology, which uses an algorithm with a suite of sensors to read rider and terrain inputs to anticipate the perfect suspension position. The fork-only update is compatible with hardtail bikes and includes customizable Auto Mode to disable "Pedal" or "Lock" positions as needed. Equipped with ButterCups, the fork dampens high-frequency vibrations before they reach the rider's hands for improved comfort. The DebonAir+ air spring strikes a balance between butter-like small bump feel and increased air volume for rider support throughout the travel. The fork accommodates 180mm minimum to 220mm maximum rotor sizes and supports a maximum tire width of 81mm. It is E-Bike approved for use on electric mountain bikes.