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The CMST Tesla Model X carbon-fibre kit is a widebody aero package for the 2021–2023 Model X that adds carbon front and rear lips, front-bumper vent trims, side skirts, bolt-on widebody wheel arches and a rear wing. It is the most dramatic visual change available for the Model X, widening the car's stance with riveted arch extensions while keeping the SUV's luxury and the carbon weave consistent front to rear. Every piece is moulded carbon fibre, and parts can be fitted as a full kit or chosen individually.

This kit is cut for the refreshed 2021–2023 Model X with the yoke-era interior and updated bumpers. Because it includes widebody arches, fitment is more involved than a simple lip-and-skirt set, so professional installation matters more here than on most kits.

• Vehicle: Tesla Model X (2021–2023 refresh)
• Fitment: 2021–2023 Model X — confirm bumper and arch shape before ordering
• Material: Carbon fibre with a UV-stable gloss clearcoat
• Key pieces: Front lip, front vent trims (2-piece), side skirts (2-piece), widebody wheel arches (10-piece), LED rear lip, rear wing
• Finish: Exposed carbon weave under gloss clear; widebody arches mount with exposed rivets

What the kit is, and who it suits

The Model X is a large, heavy electric SUV that the factory styles conservatively. CMST's kit takes the opposite view: this is a full widebody treatment that pushes the guards outward, fills the arches with a more aggressive wheel-and-tyre package, and wraps the lower body in carbon. The result is closer to a show car than a subtle refresh, which is exactly the point for owners who want their Model X to stand apart from every other one in the car park.

Because it is a kit rather than a single part, the pieces are designed to work together around the Model X's body lines. The carbon front and rear lips ground the car, the side skirts bridge them, and the widebody arches give the whole thing the proportions to carry the look. You can browse the matching components in the CMST body kit range for Tesla and decide whether you want the full widebody or just the carbon accents.

Piece by piece

Front lip and bumper vent trims

The carbon front lip runs along the lower edge of the Model X's front bumper, adding a splitter line that grounds the tall front end and manages airflow under the nose. CMST pairs it with a two-piece set of carbon vent trims that frame the lower air intakes, so the front bumper gains carbon detail above the lip as well as below it. On a vehicle as large as the Model X, these details matter — they break up the visual mass of the front end and give it a more athletic, purposeful face. The matching parts are in the CMST front lip collection for Tesla.

Side skirts

The carbon side skirts are a two-piece set running along the sills between the wheels. On a widebody build they do double duty: visually they lower the car's profile and tie the front lip to the rear, and they help bridge the gap created by the wider arches so the bodyside reads as one continuous design rather than two add-ons. They also protect the lower bodywork from stone chips and kerb scuffs. The skirt pieces live in the CMST side skirts collection for Tesla.

Widebody wheel arches (10-piece)

The widebody arches are the kit's defining feature — a ten-piece set (front and rear, both sides) that bolts over the factory guards to push the car's shoulders outward. CMST mounts them with exposed rivets, the same approach used on motorsport and show widebody builds, which both secures the arches and adds to the aggressive aesthetic. The extra width does two things: it lets the car run a wider, more flush wheel-and-tyre setup, and it gives the Model X the planted, muscular proportions a lowered SUV needs to look right. Fitting widebody arches is the most involved part of the build, since it affects panel fit and wheel clearance, so it should be done by a workshop experienced with widebody work.

LED rear lip and rear wing

At the back, CMST offers a carbon rear lip in an LED-lit version: the integrated light strip gives the lower rear a styled diffuser look while adding a functional light element. The owner in this build chose the lit version specifically for the more planted, commanding look it gives the tail. Above it, the carbon rear wing covers the factory plastic boot trim and adds muscle and three-dimensional depth to the rear, lifting the Model X's appearance from luxury SUV toward performance flagship. Because the wing is carbon, it stays light and stiff where it sits high on the tailgate. See the options in the CMST rear wing collection for Tesla.

Why carbon fibre, not the factory plastic

The Model X's factory bumpers and lower trims are PP (polypropylene) plastic — durable and cheap to mould, but heavy for their strength and without any weave to show. CMST's parts are carbon fibre, which has a far better stiffness-to-weight ratio and shows a genuine exposed weave under a gloss clearcoat. On a heavy SUV, the weight saved by individual carbon panels is modest against the car's overall mass, so the honest case for carbon here is mostly about appearance, rigidity and quality of finish rather than performance numbers — and we won't quote a weight saving we can't stand behind.

Carbon does need care. The clearcoat protects the weave from UV, but the parts last longest kept out of relentless sun where possible and washed with regular car shampoo rather than harsh solvents. An occasional wax or paint sealant keeps the clear bright and slows yellowing over years of Australian sun. Treated like good paint, the carbon stays sharp.

Fitment, finish and ownership notes

Fitment is the key consideration with this kit. The lips, skirts and vent trims are bolt-on and tape-on, but the widebody arches change the car's width and wheel clearance, so they need careful fitting and may call for a revised wheel-and-tyre package to fill the new arches correctly. The LED rear lip also needs a clean wiring connection. For all of these reasons, this is a kit to have installed by a workshop experienced with widebody conversions and Tesla panels, not a driveway project.

Any painted components should be colour-matched to your car's exact paint code by a professional, because Tesla's colours shift in different light. If you want to extend the carbon theme or plan the build in stages, the broader Tesla body kit collection and the full CMST catalogue cover complementary parts so you can add pieces over time.

Frequently asked questions

Does this kit make my Model X wider?

Yes. The kit includes a ten-piece widebody wheel-arch set that bolts over the factory guards to push the car's shoulders outward. That added width is what lets the Model X run a wider, more flush wheel-and-tyre package and gives it the muscular stance the rest of the kit is designed around.

Which Model X does it fit?

It is designed for the 2021–2023 refreshed Model X with the updated bumpers. Because the kit includes widebody arches and bumper-specific lips, fitment is shape-dependent, so confirm your car's year and bumper style before ordering.

How are the widebody arches attached?

CMST mounts the widebody arches with exposed rivets, the same method used on motorsport and show widebody builds. This secures the arches firmly and is part of the aggressive aesthetic. Because fitting them affects panel alignment and wheel clearance, the arches should be installed by a workshop experienced with widebody work.

What does the LED rear lip do?

The carbon rear lip is offered with an integrated LED light strip. It gives the lower rear a styled diffuser look and adds a functional light element. Since it connects to the car's wiring, professional fitment is recommended so the connection is clean and reliable.

Will carbon parts hold up in the Australian sun?

Yes, with normal care. The UV-stable clearcoat protects the weave, and carbon does not rust or corrode. Wash with car shampoo, avoid abrasive pads and harsh chemicals, and wax occasionally. Keeping the car out of constant direct sun where practical slows any long-term yellowing of exposed carbon.

Can I buy parts individually?

Yes. The front lip, vent trims, side skirts, widebody arches, rear lip and rear wing are all available individually as well as together. Some owners start with the carbon lips and skirts for the carbon look, then commit to the full widebody arch set later once they have planned the wheel-and-tyre package.

Ready to transform your Model X? Explore the full CMST carbon-fibre body kit range for Tesla at AME Motorsport, choose between the carbon accents and the full widebody, and our Australian team can help you plan fitment and wheel fitment.