This replacement horn is an alloy servo saver designed for HPI Bullet scale models. It forms the mechanical connection between the servo horn and linkage, taking shock from sudden steering inputs or impacts to reduce stress on servo gears.
The orange-anodized alloy gives a stiffer, more wear-resistant contact surface compared with stock plastic parts while remaining lightweight for scale fitment. The component is intended as a direct replacement on Bullet 3.0 MT and ST nitro chassis where the original saver is worn or when a firmer steering feel is required.
Installation is straightforward: remove the servo horn retaining hardware, replace the original horn with this alloy saver, confirm centring and servo travel, then retighten to the recommended torque values. Minor trim or linkage adjustment may be required to restore neutral steering after replacement. Use this part for scheduled maintenance or when tuning steering response.