RockShox Monarch Damper Shaft Assembly

This assembly is specifically engineered for Monarch RT3 shocks with the C2-D1 tune. You should verify your shock's specific model code, usually found on the air can sticker, to ensure it matches these specifications before purchasing.

This is the damper shaft assembly itself. While it is a direct factory replacement, it does not typically include the full service seal kit, so you will likely need to purchase a separate Monarch service kit to complete the rebuild.

No, this shaft is fixed at a 184mm length and 44mm stroke. You cannot alter the stroke length of your shock by simply swapping the shaft, as the internal damping circuits and air can dimensions are specific to the original stroke.

Replacing a damper shaft is an advanced suspension service that requires specific tools, including a shock pump, a shaft clamp, and the correct suspension fluid. If you are not comfortable working with pressurized systems or do not have the proper tools, it is best to have a certified suspension technician perform the installation.

You generally only need to replace the shaft if the original has become scored, scratched, or bent. Damage to the shaft surface will prevent the seals from holding oil and air, leading to persistent leaks and poor suspension performance that a standard seal service cannot fix.