RockShox Silver Seal Head Upgrade Kit - Debonair C1 38mm Silver Seal Head (Includes Silver Seal Head) - Zeb (A1+/2021+):

Upgrade your ride. The highly tunable DebonAir air spring is ready for whatever the trail demands. Buttery smooth feel off the top, now optimized to maintain higher ride height and add more confidence on technical terrain. Riders who have compatible DebonAir air springs who don’t wish to change travel or need the full assembly can benefit from this simpler upgrade option.