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The CMST carbon fibre aero kit for the Tesla Model Y includes a front lip (Style C), front bumper vent trim (Style B), rear lip (Style C), rear bumper, side skirts (Style B), and rear spoiler (Style C) — six components that work together to give the Model Y a visually cohesive, low-slung aero character distinct from the factory crossover profile. Every visible aero surface uses carbon fibre construction with exposed 2×2 twill weave. The kit is designed for the standard Model Y platform using OEM mounting points, with no chassis modification required.

• Vehicle: Tesla Model Y
• Key pieces: Front lip Style C, front bumper vent trim Style B, rear lip Style C, rear bumper, side skirts Style B, rear spoiler Style C
• Material: Carbon fibre on all visible aero faces
• Finish: Exposed 2×2 twill carbon weave, UV-stable clearcoat
• Fitment: Tesla Model Y; OEM mounting points, no chassis modification

The Case for Modifying a Tesla Model Y

The Model Y is the world's best-selling electric vehicle and one of the most common cars on Australian roads. Its popularity means the stock visual identity is immediately familiar — which also means owners who want their Model Y to read differently have a clear starting point. The factory Model Y body is smooth and aerodynamically optimised, with clean slab sides, a minimal front lower intake treatment, and a compact boot-lip spoiler. CMST's kit works with this clean body foundation rather than against it: every piece extends the existing geometry rather than departing from it.

At approximately 1,624 mm tall, the Model Y's relatively high ride height means any modification that lowers the apparent centre of gravity has a proportionally large visual impact. Side skirts, a front chin lip, and a rear spoiler each compress the car's apparent height-to-width ratio without any suspension change — the most effective tool for visual transformation on a crossover body.

Component Breakdown

Front Lip Style C

The CMST front lip for the Model Y attaches to the lower front bumper fascia at the factory lower bumper mounting tabs. Style C refers to CMST's naming convention for their third design variant of this piece — the Style C profile features a more pronounced forward-swept lower chin compared to the Style A and B options, extending further forward from the bumper plane at the centre and tapering toward the outer edges. This geometry follows the Model Y's existing lower bumper curve rather than creating a flat cross-member effect, maintaining the visual flow of the factory lower fascia.

Carbon fibre construction at the front lip position is a practical choice: the front lip is one of the most vulnerable components on any car (road debris, kerbing, steep driveways) and the higher strength-to-weight ratio of carbon compared to polypropylene or FRP means a thinner section can withstand the same minor impact energy while weighing less. The exposed carbon weave finish also distinguishes the front lip treatment from factory or lower-specification aftermarket alternatives.

Front Bumper Vent Trim Style B

The front bumper vent trim mounts within the outer sections of the Model Y's front lower bumper, adding a carbon fibre decorative and aerodynamic trim element to the outer air intake surrounds. Style B specifies the second design variant in CMST's vent trim range for this vehicle — typically a slightly more complex profile than the base Style A, with additional fin detail or layering. The vent trim works with the front lip to create a complete lower front bumper treatment, giving the front end a more deliberate aero appearance from any forward angle.

Side Skirts Style B

The side skirts are the most visually impactful single modification in this kit given the Model Y's body proportions. Style B side skirts feature a flowing lower sill profile with a rearward kick at the aft end — a design treatment that visually lowers the rocker line and creates a strong directional character along the lower body. The skirts attach along the factory sill panel using OEM-style clips supplemented by industrial adhesive tape at the upper edge. Carbon fibre construction throughout the visible surface means the skirts maintain their form without the flex-creep that affects polypropylene side skirts over time in warm climates.

For Australian owners, side skirt installation on the Model Y requires careful attention to the sill-to-door-panel gap. The Model Y's flush exterior door handles and tight door-to-sill panel gaps mean any misaligned skirt will be immediately visible. Professional fitment or careful DIY installation with reference to the factory sill panel tolerances is recommended. Browse the full range of CMST side skirts for Tesla to compare Style B with other available profiles.

Rear Lip Style C

The rear lip attaches under the Model Y's rear bumper lower edge, adding a carbon fibre accent to the lower rear fascia. Style C matches the forward profile geometry logic of the front lip — a more pronounced forward sweep at centre tapering to the outer edges, which creates visual symmetry between the front and rear treatments. The rear bumper on the Model Y has a relatively plain lower section in factory specification, which makes the rear lip one of the higher-impact individual pieces in this kit relative to its size.

Rear Bumper

The CMST rear bumper for the Model Y is a full rear bumper replacement rather than a lip-only add-on. It replaces the factory rear fascia with a unit that incorporates the rear lip treatment directly into the bumper form, along with revised lower bumper geometry. A full rear bumper replacement allows more significant changes to the rear lower profile than a lip-only approach. The replacement uses the factory rear bumper mounting positions and retains standard rear sensor positions and reversing camera location.

Rear Spoiler Style C

The Style C rear spoiler mounts to the Model Y boot lid, replacing or adding to the factory boot-lip spoiler. The Style C profile is a more assertive design than the factory unit — a carbon wing element that sits higher off the boot surface than the stock pressed-steel boot lip, creating a distinct shadow line and a more deliberate aerodynamic statement at the rear. The spoiler mounts via factory-position attachments at the boot lid and includes all required hardware for installation.

The Model Y's boot lid geometry and the spoiler's carbon construction work together effectively at the rear: the horizontal carbon wing plane against the vertical rear glass is one of the most photographed angles of a modified Model Y, and the Style C CMST spoiler reads clearly in that composition. Explore the full range of CMST spoilers for Tesla to compare the Style C with wing-style and other spoiler options available for the Model Y.

Material Quality and the CMST Construction Standard

Carbon fibre in aftermarket aero can mean anything from genuine prepreg autoclave construction to carbon-look vinyl over a plastic substrate. CMST components use genuine woven carbon fibre — the exposed weave on these parts is structural carbon, not a decorative overlay. The 2×2 twill weave is clearcoated for UV protection, but for Australian conditions a UV-rated clearcoat plus a quality ceramic coating applied at point of fitment is the correct maintenance path — standard single-stage clears will yellow and check-crack within a few years in Queensland or WA without protective treatment. For enquiries about kit availability in Australia, the CMST body kit range for Tesla at AME Motorsport is the starting point.

Frequently Asked Questions

Which Tesla Model Y variants does the CMST kit fit?

The CMST Model Y aero kit is designed for the standard Model Y platform as produced from 2020 onward. Tesla introduced a significant facelift to the Model Y in late 2023 (the Juniper refresh), which changed the front fascia design, headlights, and rear light cluster. Confirm which generation your vehicle is before ordering — front lip and bumper vent trim fitment in particular depends on factory bumper geometry, which changed between pre-Juniper and Juniper-refresh models.

Can individual pieces be ordered separately rather than as a full kit?

Yes. Each component — front lip Style C, front vent trim Style B, side skirts Style B, rear lip Style C, rear bumper, and rear spoiler Style C — is available as a standalone piece. A common starting modification for Model Y owners is the rear spoiler plus front lip combination, which delivers the highest visual impact relative to cost and installation complexity. The rear spoiler in particular is the most frequently fitted single piece on the Model Y platform.

Does the CMST rear bumper retain the factory parking sensors and reversing camera?

Yes. The CMST rear bumper replacement is designed to retain the factory sensor positions and reversing camera location. Factory parking sensor holes are pre-drilled at OEM positions in the replacement bumper. The reversing camera mount position is preserved. No electrical modifications are required.

What is the Style A / Style B / Style C naming convention in CMST's Model Y range?

CMST uses style lettering (A, B, C) to designate design variants within a single component category — for example, three different front lip profiles, each with a distinct geometry. Style A is typically the most conservative profile closest to the factory form. Style B introduces more pronounced geometry changes. Style C is the most aggressive profile in the range for that component. The naming is consistent across component types within the Model Y kit range, so a Style C front lip and Style C rear lip share the same design philosophy.

How difficult is the Model Y side skirt installation for a home mechanic?

Side skirts on the Model Y can be installed by an experienced home mechanic with panel preparation experience. The installation requires cleaning and degreasing the factory sill surface, careful alignment of the skirt to the sill panel before committing the adhesive, and then securing the OEM-style clips. The most common mistake is rushing the alignment step — once the adhesive contacts the sill panel, repositioning is difficult without removing the adhesive backing entirely. Allow a minimum of two hours for both sides with proper preparation and curing time.

Is a full respray required when fitting this kit?

No. The exposed carbon fibre pieces in this kit are finished in their natural weave under clearcoat — they are not supplied in body colour and are not intended to match the vehicle's paint. The aesthetic intention is a deliberate carbon-versus-paint contrast. If you prefer a fully colour-matched look, the carbon pieces can be professionally painted in body colour, though this obscures the carbon weave and is a specialised process requiring carbon-compatible primer and topcoat adhesion chemistry.