This replacement horn is an alloy servo saver designed for HPI Bullet scale models. It acts as the interface between the servo horn and steering linkage, absorbing shocks from sudden inputs or collisions to lower stress on the servo gears.
The orange-anodized alloy provides a tougher, more wear-resistant contact surface than the original plastic part while remaining light enough for scale mounting. It is intended as a direct replacement on Bullet 3.0 MT and ST nitro chassis when the standard saver is worn or when a firmer steering feel is desired.
Fitting requires removing the original horn retaining hardware, swapping in this alloy saver, confirming centring and travel, then retightening to the recommended torque. Small linkage adjustments may be necessary to return the steering to neutral after replacement. Fit it during maintenance or when tuning steering characteristics.
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