RockShox Fork Spring Debonair+ Shaft - 100mm-29 - SID 35MM D1+ (2024+). Debonair Shafts for repair and maintenance of Rockshox SID and SID SL suspension forks. MPN: 11.4018.111.037 - RockShox - SID / SID SL Debonair Air Shaft - Air Springs & Parts.