SRAM RED X-Sync Chainring - 42t 12/13-Speed 8-Bolt Direct Mount 6.5mm Offset BLK/Silver E1 Trek Session 2022+ SRAM Model ID: FS-SID ULT

SRAM Model ID: FS-SID ULT FLIGHT ATTENDANT-D1

It’s equipped with a high-output LED emitter capable of providing up to 400 lumens as well as a Daytime Flash mode

Less fatigue

Super Fluid Drive rings (aluminum outer

SRAM RED X-Sync Chainring - 42t 12/13-Speed 8-Bolt Direct Mount 6.5mm Offset BLK/Silver E1 Trek Session 2022+ SRAM Model ID: FS-SID ULTSingle ring drivetrain simplifies functionality and reduces weight X SYNC wide tooth, narrow tooth chainring technology provides maximum chain control SRAM Model ID: CR XSNC DM E1 TECH SPECS Narrow Wide Design Yes Teeth 42 Chainring Comp. SRAM FlatTop BCD Direct Mount SRAM 8 Bolt Speed 12