PCI Adjustable Right Side Seat Mount - NA/NB Miata (90-05)

Take your NA/NB Miata’s interior from generic to race-ready with the PCI Pro Car Innovations Adjustable Seat Mount SM-90MX5-R-A1. Designed for the 1989-2005 Miata, this right-side mount combines high performance engineering, adjustability, and effortless fitment to give you a premium seat-mounting solution for street or track. According to the manufacturer, the mount is laser-cut and CNC formed from a single piece of 3 mm (1/8″) carbon steel for optimum strength and weight savings — and still meets or exceeds the strength of conventional 3/16″ welded mounts.

The SM-90MX5-R-A1 offers multi-direction adjustability (width and fore/aft travel) and supports both 5-point & 6-point sub-belt/harness systems, making it perfect for any enthusiast Miata build — from daily-driven to track day weapon. With width adjustment spanning roughly 12 ⅝″ (320 mm) to 18 ½″ (467 mm) (minus 1″ for Miata fitment) and about 6″ (152 mm) of front-to-back adjustment, you have tremendous flexibility to dial in your driver position.

Installation is straightforward: the mount bolts directly into the factory seat-mount points of the NA/NB Miata, meaning no heavy fabrication, no guess-work and a much cleaner install. The gloss black metallic powder coat, zinc-plated Grade 8 hardware and included nylon spacers deliver both durability and premium looks. Whether you’re installing a lightweight race seat, paired with a 6-point harness setup, or simply upgrading your driver cockpit with adjustability, the PCI SM-90MX5-R-A1 delivers the fit, function and quality Miata owners expect.