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The CMST carbon fibre kit for the Porsche 718 Cayman and Boxster comprises eleven pieces covering both exterior aero and interior trim: a carbon front lip, side skirts (pair), rear quarter vent surrounds (pair), rear lip, rear wing, and nine interior carbon fibre trim pieces including the steering wheel surround. All exterior pieces are manufactured from carbon fibre and fit the 718's existing mounting points. The interior set gives owners a way to carry the carbon material language through the cockpit without switching to an entirely aftermarket interior package. The kit is designed for the 982-generation 718 (2016-onward).

• Vehicle: Porsche 718 Cayman / Boxster (982 generation, 2016-onward)
• Exterior pieces: Front lip, side skirts ×2, rear quarter vent surrounds ×2, rear lip, rear wing
• Interior pieces: Nine carbon fibre trim pieces including steering wheel surround
• Material: Carbon fibre (all pieces)
• Finish: Gloss 2×2 twill-weave carbon, exposed
• Compatible body styles: Cayman (coupe), Boxster (convertible) — body-side and roof-level pieces differ; confirm per body style

Carbon Fibre Front Lip

The CMST front lip for the 718 mounts beneath the factory front bumper on the existing lower valance clip and bolt points. The 718's standard front bumper has a fairly clean lower edge — the CMST lip extends this forward and down, sharpening the car's approach angle and adding a visual splitter element that the factory front end lacks without the GTS or GT4 RS optional aero packages. The piece does not incorporate canards in this iteration of the kit; it is a clean single-element front lip that reads as purposeful rather than overtly aggressive.

The 718's front-mid-engine layout means the front axle carries relatively little weight, and the front lip's aerodynamic contribution at speed is modest compared with what a full front splitter would generate. Its primary function on a road-registered 718 is visual: it lowers the perceived nose height and creates the splitter shadow line that cues the eye to read the car as having a competition-derived front end. For buyers wanting a more functional splitter with canard integration, CMST produces separate front bumper configurations. For the standard front lip, see CMST front lips for Porsche.

Carbon Fibre Side Skirts

The side skirts for the 718 are supplied as a pair — one per side — and mount to the existing sill structure. The 718's mid-engine packaging places the engine directly behind the cabin, which means the sill structure is both the side impact protection zone and the conduit for engine cooling and exhaust routing. The CMST side skirt design accounts for this by mounting entirely to the outer sill surface without penetrating the structural sill box. This is the correct approach for any side skirt on the 718; aftermarket pieces that require holes in the structural sill should be treated with significant scepticism.

Visually, the side skirts complete the bottom border of the 718's body between the front and rear wheel arches. The 718 has a particularly clean side profile — the factory car has a high sill and relatively flat door panels — and a side skirt that runs the full sill length dramatically changes the car's visual weight distribution, making it appear lower and more planted. Combined with the front and rear lips, the side skirts tie the horizontal lower body into a continuous visual line. The CMST Porsche side skirt range covers the 718 and several other Porsche models.

Rear Quarter Vent Surrounds

The rear quarter vent surrounds are among the more unusual elements of this kit. The 982-generation 718 features functional air intake vents on the rear quarter panels behind the doors — these feed air to the mid-mounted flat-four or flat-six engine. CMST supplies carbon fibre surround pieces that frame these vents, transforming a functional cooling aperture into a visually prominent design accent. The carbon surround highlights the vent against the painted body, making it clear to observers that this car has an active airflow management feature in that location.

Installation is a clip-on or adhesive-mount process that does not obstruct the vent opening. Maintaining full airflow through the rear vents is critical on the 718; these vents are not decorative — they are part of the engine's intake air supply on most variants. Any vent surround that reduces the effective opening area is a modification to avoid. The CMST surround follows the existing vent perimeter without encroaching on the opening.

Carbon Rear Lip and Rear Wing

The rear lip follows the lower edge of the 718's rear bumper, adding a horizontal element below the factory tail lights and bumper finishers. On the 718, the rear bumper already has a relatively pronounced lower edge on S and GTS variants; the CMST rear lip amplifies this into a more defined splitter-style element.

The carbon fibre rear wing is designed as a fixed-mount boot-lid spoiler. The 718 Cayman's bootlid is forward of the rear axle (the engine occupies the space behind), so the wing mounts at the trailing edge of the engine cover on the Cayman or the area above the engine on the Boxster. The wing's angle is set to generate rear downforce at speed. Unlike the 718 GT4 RS's large fixed rear wing, the CMST piece is a more restrained fixed spoiler — appropriate for road use without the visual extremity of a full race-specification wing.

For the rear wing in isolation, see the CMST Porsche wing collection. For a comparison between the CMST 718 spoiler and GT4 RS-style wings, the specifications page covers dimensional differences.

Interior Carbon Fibre Trim — Nine Pieces

The interior trim set is a significant element of the CMST 718 kit that distinguishes this package from a purely exterior aero offering. Nine individual carbon fibre pieces cover the 718's interior trim points — most critically the steering wheel surround and centre console areas. The 718's interior is already well-specified from the factory, but it uses a combination of materials (piano black, brushed aluminium, and fabric) that the carbon fibre trim set replaces or overlays with exposed carbon weave.

The steering wheel surround piece is the highest-impact single interior item. The driver sees it constantly, and carbon fibre here signals the interior's material direction to any occupant. The remaining eight pieces cover items such as the gear selector surround, door card inserts, centre console trim strips, and air vent surrounds — the exact pieces vary by production date and specification level of the specific 718.

Interior carbon trim pieces are typically adhesive-mounted onto factory trim panels. The factory panels are removed, the carbon piece is bonded over the existing surface, and the assembly is reinstalled. This approach avoids cutting factory trim and allows a reasonable level of reversibility. The carbon pieces are CNC-trimmed to match the factory dimensions, so panel alignment is precise rather than requiring bodywork-style finishing.

Material Notes: Why Carbon on the 718

The 718 Cayman and Boxster occupy a particular position in the Porsche line-up: they are the lightest and most agile cars in the range, built around a mid-engine layout that gives them handling balance no front- or rear-engine Porsche can match. Every kilogram removed from a 718 — particularly from body panels high on the car — has a more pronounced effect on handling balance than the same mass reduction on a heavier vehicle. Carbon fibre exterior panels are lighter than the steel or polypropylene pieces they supplement; the total saving across a full exterior aero kit is not enormous in the context of a 1,300–1,400 kg car, but it is directionally correct.

The other argument for carbon on the 718 is material honesty. Porsche positions the 718 as a driver's car in the tradition of the 550 Spyder and early 356 — lightweight, communicative, built to be driven. Carbon fibre, with its visible weave and explicit association with motorsport manufacturing, is a material that reinforces this positioning more directly than painted fibreglass or polypropylene. The CMST kit takes this approach seriously: all exterior pieces use exposed carbon rather than hiding the weave under paint.

Fitting the Full CMST 718 Kit

A complete CMST 718 kit — all exterior pieces plus the nine interior items — transforms a standard 718 into a car that reads as extensively modified without requiring any structural work. The exterior pieces bolt or bond to existing mounting points; the interior pieces overlay existing trim. A professional installer with Porsche experience can complete the full installation in two to three working days, including panel fitting, alignment, and interior disassembly and reassembly.

The result is a build that is coherent across all visible surfaces: the same 2×2 twill-weave carbon appears on the front splitter, side skirts, rear vent surrounds, rear lip, wing, and every interior trim point the driver interacts with. For the full range of CMST Porsche modifications available through AME Motorsport, visit the CMST Porsche body kit page or the complete carbon fibre body kit collection.

Frequently Asked Questions

Does the CMST 718 kit fit both the Cayman coupe and the Boxster convertible?

The exterior pieces — front lip, side skirts, rear quarter vent surrounds, rear lip, and rear wing — are designed around the 982-generation 718 body. The front lip, side skirts, and rear lip fit both Cayman and Boxster, as these share the same lower body structure. The rear wing mounting differs between the Cayman's fixed bootlid and the Boxster's convertible rear section; confirm wing compatibility for the Boxster before ordering. Interior trim pieces fit any 982-generation 718 cabin.

Will the CMST rear quarter vent surrounds restrict airflow to the 718's engine?

No. The CMST vent surrounds frame the existing rear quarter vent opening without reducing its aperture. The pieces mount to the painted body panel around the vent perimeter and do not extend inward over the opening itself. Maintaining full airflow through these vents is essential, as they feed intake air to the engine on most 718 variants.

Can I fit the CMST 718 interior trim over existing factory trim panels or do the factory pieces need to be removed?

The interior carbon trim pieces are designed to overlay directly onto factory trim panels using automotive-grade adhesive. The factory panels do not need to be cut; the carbon piece bonds to the factory surface. For the best finish, professional installers typically remove the panel, bond the carbon piece at a bench, allow full cure, and reinstall — this gives precise alignment rather than bonding in situ inside the car.

What is the correct maintenance routine for exposed carbon fibre on a 718 used in Australian conditions?

Wash with a pH-neutral shampoo and dry thoroughly. Apply a UV-stable ceramic coating immediately after installation and refresh annually. Avoid automated car washes with abrasive brushes, which can scratch the clear resin surface of the carbon panels. Stone chip damage on the front lip is the most common maintenance issue; address chips promptly with a carbon-compatible touch-up resin to prevent moisture ingress and delamination.

Does the CMST 718 kit affect the car's ability to pass a Queensland or NSW roadworthy inspection?

Externally mounted aero pieces — lips, skirts, and spoilers — are permissible under Australian state vehicle standards provided they do not create sharp edges that could injure pedestrians and do not project beyond the vehicle's maximum width limits. A carbon fibre rear wing that does not increase the vehicle's width beyond 2,500 mm and does not have exposed sharp metal edges will generally pass a road-worthiness inspection. Interior trim modifications do not affect roadworthy status. Owners in states with periodic inspection requirements should confirm fitment details with a registered inspector.