A PCI Racing sliding sub frame for the Mazda MX-5 Mk4, the ND chassis, 2016 onward. Part number SM-16MX5-S2.
The ND is a different car underneath from the NC before it, so a mount for a Mk3 will not fit. Order on the chassis code rather than on the model name, and send us the registration if you are not certain which you have.
Slider, and why
This is the slider version, so the seat moves fore and aft after installation. In an ND that is worth more than it sounds: these are still largely road cars, and being able to move the seat back to get a bag behind it, or to let somebody else drive, is the difference between a car you use and one you only take to track days.
PCI’s slider bolts to the base with four bolts rather than the usual two, which they rate as twice as strong as two bolt mounting. With a harness pulling on a seat rather than a seatbelt, that is the right side to be on.
Construction
Laser cut and CNC formed from a single piece of 1/8 inch carbon steel, with bends adding stiffness where thicker metal would otherwise be needed. Gloss black powder coat, grade 10.9 8mm hardware, five and six point sub belt mounting locations built into the mount.
Ordering
Side mount only, for a competition bucket, bolting to the factory seat mounting points. Handed, so order twice for a pair.
Have you written anything useful for my car?
Yes: Customer Question: What’s the Biggest Seat That Fits in My Mazda MX5?, and New Mazda MX5 TRS Harness Belts. Those are written around the same car, from real fittings and customer questions, so they are worth a look before you decide.
Will this fit my car?
This frame is made for the Mazda MX5 MK4, MX5 ND. Chassis code and years matter more than the badge, as floor pans change between generations, so if your car sits near a changeover year, send us the registration and we will confirm before you order.
Which seats does it take?
Check the bolt pattern in the specification against your seat. The Compatible seats tab above lists what bolts straight on. If your seat is not listed, tell us what you run and we will confirm the fit.
Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on PCI frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.
Base mount or side mount, and does it matter?
This is a base-mount frame: the seat bolts down through its base, the simpler stack that suits seats with a flat bottom and keeps the install low-fuss. Our guide on base mount versus side mount explains the whole fitting stack.
Is this for the driver or passenger side?
Both sides are available on this listing, pick driver or passenger side at the point of order (sides listed are for right-hand-drive cars). Left-hand-drive car? Ask us, as the sides swap over and availability varies by model.
