Top 5 Carbon Fibre Mods for the Mazda RX7 FD3S Which Should You Buy?
Last updated: July 2026 | Read time: 6 minutes
The Mazda RX7 FD3S is one of the most visually striking JDM sports cars ever built. Its lines are clean, aggressive, and perfectly proportioned, which means every modification you make either adds to that or takes away from it.
Carbon Fibre is one of the few upgrade paths that genuinely enhances the FD's design rather than fighting it. Lighter than steel, stronger than fibreglass, but with a visual quality that signals serious intent - it's the natural choice for FD owners who want to elevate their build without compromising the car's integrity.
We've owned and built RX7 FD3Ss for years. Here are the five carbon fibre mods we'd do first, ranked by the impact they deliver.
📋 Jump to:
- The Front Lip
- Spoiler Blade Insert
- Side Skirt Extensions
- Door Sills
- Interior Carbon
- Bonus: Forged Carbon with Gold Flake
1. Carbon Fibre Front Lip
The front lip is the single most transformative exterior mod you can make to the FD3S and the first thing anyone notices when the car is approaching.
The factory 2-piece OEM lip does the job, but it's black plastic. Swapping it for Carbon Fibre immediately shifts the front end from refined to purposeful. The weave catches light differently depending on angle, and the visual weight it adds to the front bumper changes how the entire car reads from the front.
You have two options here depending on what bothers you about the factory setup:
The 2-piece carbon front lip - follows the OEM profile closely, direct fitment, immediately transforms the front end. This is the mod for owners who want the carbon look while keeping the factory bumper line.
The 1-piece carbon front lip - our Australian-first design that eliminates the centre gap entirely. If you've owned an FD long enough, you know the factory 2-piece develops a gap in the centre as the bumper ages and sags. Our 1-piece design was engineered from scratch using 3D scanning to fix this permanently. No gap, no misalignment, no compromise.
2. Carbon Fibre Spoiler Blade Insert
The rear spoiler is one of the FD's most iconic design elements and one of the easiest places to add significant visual impact with minimal effort.
The OEM spoiler blade is flat. Functional, but shapeless. Our Carbon Fibre spoiler blade insert replaces it with a sculpted carbon alternative that follows the curve of the spoiler and adds genuine character to the rear end.
What makes this mod particularly satisfying is the installation. Remove the end caps and spoiler screws, swap the blade, reassemble. No cutting, no trimming, no modifications. Twenty minutes and the rear of your car looks completely different.
Pair it with the Carbon Fibre spoiler end caps for a fully transformed rear spoiler - both pieces together make the OEM spoiler look like it was designed with carbon in mind from the factory.
👉 Shop the Carbon Fibre Spoiler Blade Insert
👉 Shop the Carbon Fibre Spoiler End Caps
3. Carbon Fibre Side Skirt Extensions
The Mazda RX7 FD3S didn't come with factory side skirts. That gap between the front and rear guards is the one area of the car's exterior that feels unfinished - and carbon fibre side skirt extensions are the most natural way to fill it.
Done right, side skirts don't look added on -they look like they should have been there from the factory. Our Carbon Fibre side skirt extensions follow the FD's natural body line so closely that's exactly the impression they give. The exposed carbon weave running the length of the car ties the front lip, side skirts and rear diffuser together into a cohesive aero package.
If you're building the full carbon exterior, start with the front lip and add the side skirts next. The combination transforms the car's visual stance from every angle.
👉 Shop the Carbon Fibre Side Skirt Extensions
4. Carbon Fibre Door Sills
This is the practical mod that every long-term FD owner eventually wishes they'd done sooner.
As RX7 FD3Ss age, genuine OEM door sills become increasingly scarce and expensive. Every time you or a passenger gets in or out of the car, those sills take hits with scuffs, scratches, and wear that adds up quickly. Our Carbon Fibre door sill covers sit directly over your existing OEM panels, protecting the genuine pieces from damage while adding a premium detail that's visible every time the door opens.
It's one of those mods that serves two purposes simultaneously, preservation and aesthetics. For an ageing JDM icon where OEM parts are only getting harder to find, that matters.
👉 Shop the Carbon Fibre Door Sills
5. Carbon Fibre Interior Trim
The RX7 FD3S interior is driver-focused and purposeful - but after 25+ years, the factory plastic trims are showing their age on most cars. Faded, cracked, or both. This is where Carbon Fibre interior pieces make a genuine difference.
We've developed a range of world-first Carbon Fibre interior replacements for the FD3S - engineered using 3D scanning to achieve true OEM fitment with no trimming or modification required. These aren't sticker overlays or adhesive-backed sheets. They're real Carbon Fibre with all factory mounting points built in.
The pieces that make the biggest difference:
Gear Surround - sits dead centre in the driver's eyeline. One of the most impactful interior mods on the FD. Available in Matte or Gloss.
Radio Surround - frames the centre stack and immediately elevates the interior quality. Direct OEM replacement.
Dash Surround - the largest interior trim piece, and the one that transforms the cockpit feel most dramatically.
The beauty of the interior range is that each piece compounds the others. One piece looks like an upgrade. Three pieces together look intentional. The full set looks like a purpose-built cockpit.
👉 Shop the Carbon Fibre Gear Surround
👉 Shop the Carbon Fibre Radio Surround
👉 Shop the Carbon Fibre Dash Surround
Bonus: Forged Carbon with Gold Flake
We recently finished something on our own shop FD3S that we haven't seen done anywhere else in Australia - Forged Carbon with Gold Flake.
Forged carbon is a fundamentally different material to the woven Carbon Fibre you see on most aftermarket parts. Instead of a structured weave pattern, it uses chopped Carbon Fibre strands compressed under pressure into a mould, creating a flowing, organic pattern that looks unlike anything else. Add gold flake into the mix and the result is something genuinely unique.
Right now this is on our shop car only, a prototype and a proof of concept. But the response we've had at shows has been significant, and it's given us a clear signal about where we want to take the range.
If Forged Carbon with Gold Flake is something you'd want on your FD, let us know. The more interest we see, the faster it becomes a real product.
👉 Contact us to register your interest
Build Your Carbon FD3S with Carbon Street
Every product in this list is designed and sold by people who own and build RX7 FD3Ss. We know these cars because we live with them, which is why our fitment is better, our finish is better, and our products are designed to solve problems we've actually experienced.
All orders ship Australia-wide. Questions about fitment, build order, or which products work together? Reach out, we're happy to talk builds.