RockShox | Fork Spring DebonAir Shaft – SID Ultimate (100mm)

The RockShox DebonAir Shaft (11.4018.111.006) is a genuine replacement air spring component designed for the SID Ultimate fork. Built for precision and reliability, this part restores the plush, consistent feel of your DebonAir system. Ideal for riders maintaining or upgrading their SID Ultimate, it ensures optimal air spring function and long-term performance.

Key Features:
• Model code: 11.4018.111.006
• Fits RockShox SID Ultimate (100mm)
• Genuine DebonAir spring shaft assembly
• Maintains smooth, consistent suspension performance
• Easy to install and service
• Precision-engineered for RockShox air spring systems