This front lower arm kit is made for the Tamiya Hornet EVO (58742) chassis and is identified by model JR-THNE01-LB. The set replaces the OEM plastic lower arms with blue anodized aluminum parts aimed at providing a stiffer mounting location for the front suspension.
Installation uses the Hornet EVO's existing suspension pivots and hardware, making the replacement straightforward. After installation, inspect steering free-play and suspension geometry because the increased stiffness can alter steering feedback and camber/toe response compared to the original arms.
These arms are intended as a precision and durability upgrade: reduced flex helps keep steering inputs consistent under load while allowing standard shock and suspension adjustments to tailor handling for different driving conditions.