SRAM Flight Attendant Upgrade Kit - (Charger RD 2 Damper for SID35, ISOSTRUT FA Shock, XXSL Power Meter, 34t Cring, 2 Batteries w/charger) - TREK Supercaliber 9.9 X0 / 9.8 GX Gen 2Upgrades Trek Supercaliber Gen 2 complete bikes into a Flight Attendant model Includes Charger Race Day 2 Flight Attendant fork damper and Control Module for SID or SID SL, a complete SIDLuxe Ultimate IsoStrut Flight Attendant rear shock, XX SL Eagle AXS Transmission Power Meter and 34T chainring, two SRAM Batteries, and Battery Charger Compatible with Trek Supercaliber SLR 9. 9 XX AXS Gen 2, Supercaliber SLR 9. 9 X0 AXS Gen 2, and Supercaliber SLR 9.