Hirobo Freya FFZ-III Damper Rubber HI0414389 #60 Replacement  [HI0414389]

FFZ-III shock rubber insert

This is an RC-scale replacement damper rubber made for the Hirobo Freya FFZ-III damper assembly. It acts as the elastic insert in the damper stack and is intended for scheduled maintenance or tuning changes on helicopter suspension and vibration control parts.

Fitting the sleeve is a routine job for hobbyists: remove the damper cap, inspect internal parts for wear, install the new #60 sleeve, and reassemble while checking for smooth piston travel and correct preload. Use compatible damper oil and follow your standard damper rebuild routine; do not force components that do not line up.

When tuning, the rubber sleeve changes the damping feel and small-amplitude response. The label "#60" denotes Hirobo's specified rubber hardness to balance compliance versus rebound control; swapping to alternative hardness sleeves is commonly used to fine-tune response and reduce vibration.