Rock Shox SIDLuxe Ultimate A2 Flight Attendant Rear Shock The path to the podium has never been clearer. SIDLuxe Ultimate Flight Attendant completes one of the fastest, most efficient, and most technologically-advanced crosscountry platform ever. Features Specifically designed for use with Santa Cruz Blur/Wilder 2022+Flight Attendant has an all new algorthim that uses a suite sensors to read rider and terrain inputs Adaptive Ride Dynamics enables the Flight Attendant system to learn from the rider AXS-enabled and cable free Three-position damping system: Open, Pedal, and Lock positions Minimum requirement for Flight Attendant functionality is a Fork, Rear Shock and a pedaling sensor Shared battery with all SRAM AXS-enabled components (Battery and Charger Included)Flight Attendant System is waterproof to IPX7 rating Lockout 81 Token SPECIFICATIONSVariant MFG#190x42. 5mm Santa Cruz Blur/Wilder (2022+) A200. 4118. 459. 005190x42. 5mm Specialized Epic Evo (2021-23) A200. 4118. 459. 007190x45mm Salsa Spearfish C (2025+) A200. 4118. 459. 018190x45mm Santa Cruz Blur TR/Wilder (2022+) A200. 4118. 459. 006190x45mm Specialized Epic (2024+) A200. 4118. 459. 008 | Rockshox | Sidluxe Ultimate A2 Flight Attendant Rear Shock 190X45Mm Salsa Spearfish C (2025+) A2