The Mach II side skirts swap the boxy factory rockers for a sleeker, lower-profile design. This fiberglass version fits the 2005–2012 narrow-body 997 Carrera and GT3, giving them a more aggressive, track-inspired stance.
What are Mach II side skirts?
They’re replacement rocker panels with a streamlined Mach II profile that visually lowers and lengthens the side of the car, flowing cleanly from the front fenders to the rear quarters.
Fiberglass vs. polyurethane
This is the hand-laid fiberglass version, prized for precise shaping and sharp, detailed lines. Fiberglass is rigid rather than impact-flexible, so it should be installed and handled with care. It arrives in a raw gel-coat finish ready for body-shop prep. If you want a more flexible option, we also offer a polyurethane Mach II skirt.
Fitment
Fits the Porsche 911 997.1 and 997.2 Carrera and GT3 (2005–2012), narrow body. They do not fit Turbo or wide-body models without modification.
Installation tips
The skirts use OEM-style mounting; light trimming may be needed for a perfect line. As fiberglass parts, body-shop installation is recommended for the cleanest fit and paint. Budget for sanding and adjustment.
Styling and performance
Mach II skirts give the 997 a lower, more aggressive stance and help guide airflow along the sides. Pair them with a front lip and rear diffuser to complete the look.
FAQ
Fiberglass or polyurethane? This is the fiberglass version — sharper detail, but rigid, so careful install is key.
Sold as a pair? Yes — left and right, with an install guide.
Lower your 997’s stance
Add aggressive Mach II side skirts. Shop the Porsche 997 Mach II Fiberglass Side Skirts here.