Lower Spoilers / Trays / Corner trims

Fits:
Porsche 928 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 1
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9285050712170B
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Improve your Porsche’s aerodynamics, protection, and appearance with lower spoilers, undertrays, and corner trims from Design911. These components are designed to enhance airflow, reduce drag, and protect critical underbody areas from road debris and damage. Made to OEM specifications, each piece fits perfectly - maintaining Porsche’s precision engineering and sleek design. Lower spoilers help improve stability at higher speeds, undertrays protect the engine and suspension from dirt and impact, while corner trims complete the lower bodyline for a refined, factory-correct finish. Whether you’re replacing worn panels or upgrading for performance, Design911 offers durable, model-specific solutions for all Porsche vehicles.
Front Lower Spoilers & Splitters
Aerodynamic Porsche front spoilers and splitters designed to
reduce front-end lift, increase downforce, and enhance road-holding at high
speeds. Available for both classic and modern Porsche models.
Corner Trims & Valance Panels
Precision-moulded corner trims and valance panels that
complete the lower bumper section and maintain your Porsche’s seamless,
aerodynamic look.
Classic Porsche Aero Components
Authentic lower spoilers and trims for vintage Porsche
models like the 911 Classic, 930 Turbo, and 964. Crafted for originality and
period-correct performance.
Mounting Kits & Hardware Accessories
OEM-grade brackets, fasteners, and hardware sets for easy
installation of Porsche lower spoilers, undertrays, and trims — ensuring
long-term fit and finish.