Installing Carbon Interior in an FD3S RX-7: Dash, Bezels & Trim

The short answer: FD3S interior carbon is the upgrade you experience on every single drive, but the FD cabin is tight and our interior pieces are hand-built and fiber-backed, so fitting them is a craft, not a five-minute clip-in. This guide walks the whole job: stripping the OEM interior, trimming and fitting the bezels, sound-deadening and mounting the dash, and getting everything to sit flush and rattle-free. Budget a patient afternoon and it comes out looking factory-plus.

A note on hand-built parts before you start

Our FD3S interior pieces, the dash and especially the bezels, are hand-built over a fiber backing rather than mass-molded plastic. That is what gives them their depth, strength, and the kind of fit you simply cannot get from a stamped panel. The trade is that a 30-year-old FD is a little different from the next one, and a hand-built part is meant to be fitted to your specific car. A small amount of trimming and adjustment is part of the process, not a fault. Done right, you end up with a truly custom, flush fit. This guide shows you how to do it right.

Tools you actually need

• Plastic trim removal tools. Cheap, and the difference between popped clips and snapped tabs. Never pry FD interior trim with a screwdriver.
• Socket set and Phillips driver for the console and dash fasteners.
• For trimming the fiber backing: a round and a flat file, fine sandpaper (120 to 240 grit), and a rotary tool (Dremel) with a sanding drum for the bigger reliefs. A dust mask, always.
• Sound deadening: Dynamat or any quality butyl mat, plus closed-cell foam strips (anti-rattle/anti-squeak tape).
• Quality double-sided tape (3M VHB type) for trims that mount with adhesive, and isopropyl alcohol to prep surfaces.

Step 1: Strip the OEM interior

Work in a warm car so the plastic clips flex instead of snapping. Pull in this rough order: center console (lift the shifter surround, find the screws in the cubby and ashtray area), then the climate and gauge surround, then the lower dash trim and knee panels, then door cards, then kick panels. Photograph every connector before you unplug it, and bag the OEM hardware by area. The FD hides a few fasteners behind blanking caps and inside the storage cubbies, so if a panel feels stuck, stop and find the last screw rather than forcing it.

Step 2: Dry-fit everything first

This is the golden rule for hand-built parts: every carbon piece goes on dry, with no adhesive and no fasteners, before you commit to anything. Set each part in place, see where it contacts the OEM mounting points, and note where it needs to be relieved. You are looking for the part to sit down naturally without being forced. If you have to push hard to seat it, it needs trimming, not muscle. Forcing a carbon part stresses the laminate and will craze the clear coat over time.

Step 3: Fitting the bezels (the part that needs trimming)

The bezels are where the hand-built nature shows most, and where a little work makes all the difference. Because they are made over a fiber backing and finished by hand, the mounting holes, tabs, and the openings for gauges, switches, and vents are intentionally left a touch tight so you can fit them precisely to your car rather than ending up with sloppy gaps.

How to trim a bezel for a perfect fit:

• Find the contact points. Dry-fit and look for where the bezel sits proud or won't drop onto the OEM bosses and clips. A little masking tape on the OEM mounts, pressed against the carbon, will mark exactly where they touch.
• Relieve the mounting points, not the show surface. Open up the screw holes and clip slots on the backing with a round file or the Dremel sanding drum, a little at a time. Test-fit after every few passes. You are removing material from the hidden backing, never the visible weave.
• Clean up the openings. If a gauge, switch, or vent opening is tight, take it out to a clean line with a fine flat file. Go slow and keep the edge square. The fiber backing files and sands beautifully when you are patient.
• Deburr and check flush. Knock the sharp edges off any trimmed area and confirm the bezel now sits fully flush with zero stress. That stress-free seat is the whole goal: it is what stops rattles and protects the clear coat.

Step 4: Mounting the dash (and the sound-deadening trick)

The carbon dash is the centerpiece, and the difference between one that feels OEM-solid and one that drums and rattles is what you do before you bolt it down. Two moves:

• Sound deadening. Lay Dynamat (or equivalent butyl mat) on the underside and the firewall-facing areas of the dash before final mounting. It kills the resonance that a large carbon panel can pick up, and it cuts the heat soak an FD dash takes in the sun. This is the single biggest upgrade to how the dash feels day to day.
• Closed-cell foam at the contact points. Run thin closed-cell foam strips anywhere the dash meets the chassis or another panel. It takes up the small gaps that hand-built parts naturally leave, stops squeaks, and lets the dash sit without stress. This is the pro move that makes a hand-fitted dash feel factory-tight.

Mount to the OEM dash points, snug rather than gorilla-tight, and check for any spot still under load. Add foam there rather than forcing the bolt.

Step 5: Door cards, trim, and the digital dash mount

Transfer clips from the OEM door cards to the carbon ones one at a time so none go missing, reconnect switch and handle electrics, and seat from one corner with firm palm pressure. Smaller trims that mount with adhesive: clean the surface with isopropyl, use quality VHB tape, and leave it overnight before stressing it. If you are running an IC7 or other digital dash, fit and wire the screen before final-mounting its bezel, and loom the wiring so nothing rattles behind the carbon.

Step 6: Final fit and care

Reconnect the battery, check every gauge, light, switch, and HVAC function before the panels are fully buttoned up, then do a final flush-and-rattle check on a short drive. From there it is just normal carbon care: microfiber and a gentle interior cleaner, no harsh solvents on the clear. Interior carbon collects fingerprints; a quick detailer spray handles them.

FAQ: installing FD3S carbon interior

Why do the carbon bezels need trimming to fit?

Because they are hand-built over a fiber backing and finished by hand, and because a 30-year-old FD shell varies car to car. The mounting points and openings are left slightly tight on purpose so you can fit them precisely to your car for a flush, custom result rather than loose, gappy fitment. Trimming is a normal part of the install, and it is done on the hidden backing, never the visible weave.

Are ETi FD3S interior parts hard to install?

They are a patient afternoon with hand tools, not a job that needs a shop. The skill is in dry-fitting first, trimming the bezel mounting points gradually, and sound-deadening the dash before mounting. Follow those and the result looks and feels factory-plus.

What sound deadening should I use on the carbon dash?

Dynamat or any quality butyl mat on the underside and firewall side, plus closed-cell foam strips at the contact points. The mat kills resonance and heat soak; the foam removes rattles and takes up the small gaps a hand-built part leaves.

How do I trim carbon without cracking it?

Only ever remove material from the hidden fiber backing, never the show surface. Use a round file or a Dremel sanding drum, take small passes, and test-fit constantly. Never force a part to seat: if it needs pressure, it needs trimming. A stress-free fit is what protects the clear coat long term.

Do the FD3S interior parts fit LHD and RHD?

We build for both. Confirm your steering side on the product page or tell us when you order, and we will send the correct hand.

Can I install the carbon dash myself?

Yes, most people do. It mounts to the OEM dash points. The two things that separate a great install from a rattly one are sound deadening before you mount it and foam at the contact points. Take your time on the dry-fit and you will be fine.

Browse the FD3S interior range and the rest of the RX-7 catalog here. Every piece is made to order and hand-built for your car. Questions mid-install? DM us photos and we will get you sorted. Written by Nate Benoit, founder of Elite Ti. Bespoke carbon and titanium for JDM and motorsport builds. Last updated June 2026.