Porsche 928 Modular Speaker Grille Kit – Fit. Finish. Factory.

The "Stealth" Audio Solution

Upgrading your 928's sound shouldn't mean compromising its soul. Most modern speakers from the big aftermarket car audio brands come with flashy, oversized grilles that look completely out of place in an 80s GT cockpit.

The SF Modular System is designed for the enthusiast who wants modern audio without the aftermarket look. Our 3-piece kit allows you to hide those modern drivers behind a period-correct, understated design that looks like it just rolled off the line in Stuttgart. No gaudy logos—just a clean, factory-integrated finish. 3D printed from carbon fibre-reinforced nylon, which will shrug off a hot sunny day without warping.

Fit. Finish. Factory.

• Fit: Precision-modelled threads are 100% interchangeable with original Porsche components. Use our rings on your factory bases, or replace the entire assembly for a rock-solid mount.

• Finish: A muted, matte texture designed to blend into the original door cards—not scream for attention. Includes pre-fitted, high-airflow wire mesh.

• Factory: A complete 3-piece system (Base, Ring, and Mesh) for both the 4" woofer and 1" tweeter.

The Kit Options (Prices in USD):

• Single Housing (4" or 1"): Perfect for replacing one broken unit.

• Single Door Set (1 Woofer + 1 Tweeter): Refresh one side of the car.

• Full Interior Kit (2 Woofers + 2 Tweeters): The complete resto kit.

Technical Specs:

• 3-Piece Construction: Includes Mounting Base, threaded locking Ring, and integrated mesh.

• OEM Compatibility: Directly replaces/interchanges with Porsche PNs 928.645.427.00 and 928.645.428.00.

• Modern Excursion: Deep-profile design ensures clearance for modern high-output drivers (tested with Rockford Fosgate Punch series).

• Enthusiast Built: Prototyped and manufactured in Canada specifically for the 928 community.