HPI Baja Alloy Rear Skirt Reinforcement - BJ903R by GPM  [BJ903R]

Aluminium rear skirt for HPI Baja

This aftermarket alloy rear skirt, model BJ903R, is a direct-fit replacement designed to strengthen and protect the lower rear section of HPI Baja shells. The component mounts to the stock body or bumper attachment points to deliver a firmer rear profile that reduces flex and abrasion during hard off-road use.

Installation uses common Baja body hardware locations; you can typically reuse the vehicle's original fasteners and body posts. Fitment normally involves removing the rear shell, aligning the skirt with the existing tabs, and securing it with the original screws or supplied bolts. No specialist tools are needed beyond standard hex drivers and basic hand tools.

As a chassis-level accessory, the rigid alloy skirt alters rear-body stiffness and can change airflow and how debris is deflected around the bumper. Start testing with your regular suspension and tyre setup, then assess handling changes on the track; combine skirt stiffness with shock and toe tweaks to refine rear traction and stability.

Choose this alloy rear skirt when you need a tougher, stiffer lower rear surface for HPI Baja-style off-road running; always confirm fit on your specific shell before paint or finishing.