These black alloy front knuckle arms are offered as a heavy-duty aftermarket part for HPI Bullet builders and modifiers seeking increased durability. They replace the factory plastic knuckles and are intended for Bullet 3.0 MT and ST chassis configurations.
The component acts both as a maintenance replacement and as a tuning element: the extra rigidity of alloy can sharpen steering feedback and influence how surrounding parts wear. The black surface is cosmetic only and does not alter the part's fitment; confirm your Bullet 3.0 MT or ST front mount setup prior to fitting.
Fitting is standard for experienced hobbyists: remove the original knuckles, compare mounting points and linkage geometry, then install the alloy arms with the supplied or original fasteners. After installation, test steering range and ensure no binding occurs.
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