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Fitting the CMST carbon-fibre body kit to a 2024-onward Porsche Cayenne (9YA facelift) is a bolt-on and bonded job a competent workshop can complete in roughly four to six hours. The kit is a lip-style upgrade — front lip, side skirts, wide wheel arches, rear lip with integrated reflector wiring, and a boot-lid spoiler — so no original panels are cut. Every piece locates onto the factory bumpers and arches using 3M automotive double-sided tape, beads of polyurethane glass adhesive, and self-tapping screws into the existing bumper channels. This guide covers the sequence, the tools, and the fitment cautions specific to the Cayenne.

• Vehicle: Porsche Cayenne (9YA facelift, 2024-onward), including Coupe
• Fitment years: 2024 to present (24-ON)
• Material: Dry carbon fibre (prepreg autoclave), available in gloss or matte clear-coat
• Key pieces: Front lip, side skirts, wide wheel arches (front 2 + rear 4), rear lip, rear wing
• Fixing method: 3M tape + glass adhesive + self-tapping screws (bolt-on, no cutting)
• Difficulty: Intermediate — two people recommended; allow 4–6 hours

Tools and materials you will need

This is a panel-fitment job rather than a mechanical one, so the tool list is short. Gather everything first so adhesive does not cure while you hunt for a tool.

• Cordless drill or impact driver with a Phillips bit (for the supplied self-tapping screws)
• Adhesion promoter (primer) and a lint-free cloth — the 3M tape will not hold without it
• Isopropyl alcohol or panel wipe to degrease every mating surface
• Polyurethane "glass glue" (the bead adhesive that backs up the tape at stress points)
• Fine sandpaper (around 240–320 grit) to key the bonding faces on the wing and arches
• Masking tape and a tape measure for dry-fitting and marking centre lines
• A trim-removal tool, a heat gun for cold-weather tape activation, and a vehicle hoist or ramps

A hoist makes the side skirts and rear lip far easier, as much of the screw work happens from underneath.

Before you begin: dry-fit and clean

Wash the car and bring it indoors. The 3M acrylic tape on every CMST piece develops its bond as it warms, so fitting in the cold or in rain is the single most common cause of edges lifting later. Aim for a workshop above 18 °C.

Dry-fit each carbon piece against its panel before any tape backing comes off. Hold the front lip up to the bumper, sight the gaps left and right, and confirm the contour follows the factory line — the Cayenne's front bumper curves hard at the corners, so check the lip sits flush there rather than standing proud. Mark the position with masking tape so you can re-locate it blind once the adhesive is exposed. Wipe every bonding face — carbon and car — with panel wipe, then adhesion promoter, and let it flash off.

Step 1 — Front lip

The front lip is the most visible piece, so take your time on alignment. Run 3M tape along the upper inner edge of the lip where it meets the bumper, and add a few dabs of glass adhesive beside the tape for long-term hold. Peel one end of the tape backing, offer the lip up to your masking-tape marks, and confirm the position with a second person before peeling the rest. Press firmly along the whole length. Finally, drive the supplied self-tapping screws through the lip's lower flange and into the bumper's underside on the left, right, and bottom to lock it mechanically. The screws carry the load; the tape and adhesive seal the join and stop rattles.

Step 2 — Wide wheel arches

The Cayenne arch set is six pieces — two on the front guards and four around the rears. Lay them out and identify left from right before any tape comes off, because the curvature is handed. Apply 3M tape around the full inner perimeter of each arch and add a few points of glass adhesive. Clean the painted arch lip with adhesion promoter, peel one end of the tape, and have a helper hold the arch on its marks while you confirm the gap to the tyre and the alignment with the door and bumper shut lines. Once happy, peel the remaining backing and press the whole perimeter down hard. Work one arch at a time so nothing shifts.

Step 3 — Side skirts

Open all four doors so you can reach the sill. Run 3M tape along the inner top edge of each skirt and bead glass adhesive alongside it. Wipe the sill with adhesion promoter. Peel one end of the tape, and with one person holding the skirt level and on its marks, confirm the front and rear alignment against the bumper and arch before committing the rest of the tape. Press firmly along the length, then fix the bottom edge with self-tapping screws into the sill channel. Repeat on the other side using the same method.

Step 4 — Rear lip and reflector wiring

The rear lip is the most involved piece because it ties into the bumper corners and the lighting. First, mark and drill three locating holes in each rear bumper corner where the lip's wrap-around sections meet, and fix those corners with self-tapping screws. Run 3M tape along the inner edge of the main lip, add glass-adhesive dabs, clean the bumper with adhesion promoter, and bond it with a helper holding alignment. Screw the bottom edge into the bumper to finish the mechanical fix.

Wiring note: the rear lip carries reflectors that splice into the car's existing rear-light loom. On the supplied connector, the red wire is positive, the black wire is ground, and the yellow wire is not used. Route the lead inside the rear bumper across to the right-hand tail-light feed and connect it there. Test the lights before final assembly.

Step 5 — Rear wing

The boot-lid wing needs the most surface preparation. Scuff the four inner bonding faces of the wing feet with 240–320 grit sandpaper so the adhesive can bite, then clean with adhesion promoter. Apply 3M tape to the prepared faces and add several points of glass adhesive across the centre support pad and the left and right contact faces. Peel one end of the tape, set the wing on its marks with a helper holding the other side, confirm it sits square to the boot lid, and press the contact faces down firmly. Hold pressure while the adhesive grabs.

Fitment tips and cautions

• Temperature is everything. Below about 15 °C the 3M tape will not key properly. Warm the panel and the workshop, or use a heat gun on a low setting to activate the adhesive.
• Two people, every time. Carbon pieces are light but long, and once the tape touches paint it does not come off cleanly. A second set of hands holding alignment prevents a ruined panel.
• Promoter before tape. Skipping the adhesion promoter is the number-one reason aftermarket lips peel at the corners. Wipe, prime, let it flash, then bond.
• Check tyre and arch clearance. On the wide arches, confirm there is no rub at full lock or under suspension compression before you commit the tape.
• Paint-matching. The kit ships in clear-coated carbon. If you want a colour-matched finish, send the pieces to a painter before fitting rather than masking them on the car.

Frequently asked questions

Does fitting the CMST Cayenne kit require cutting the original bumpers?

No. This is a lip-and-arch overlay kit. Every piece bonds and screws onto the factory bumpers and guards, so the original panels stay intact. The only drilling is for the self-tapping screws and the rear-lip locating holes, all of which sit hidden behind the carbon.

How long does the installation take?

A workshop familiar with body kits typically needs four to six hours for the full set. The rear lip takes the longest because of the reflector wiring and the bumper-corner holes. First-time fitters working on ramps rather than a hoist should allow a full day.

Can I install the Porsche Cayenne body kit myself?

It is achievable for a confident DIY fitter, but two people are strongly recommended and a hoist makes a real difference. The skills involved are careful dry-fitting, surface preparation, and patient alignment rather than mechanical complexity. If you are not comfortable drilling into your bumper or splicing the reflector wiring, use a professional fitter.

Will the carbon pieces stay attached in Australian heat?

Yes, provided they are fitted correctly. The combination of 3M automotive-grade tape, polyurethane adhesive, and self-tapping screws is designed for permanent exterior use. The critical factor is preparation: clean, primed, dry surfaces bonded at a sensible temperature. A correctly fitted kit handles Australian summer heat without lifting.

Is the kit dry carbon or wet-layup carbon?

CMST supplies these pieces in dry carbon fibre — prepreg material cured under heat and pressure in an autoclave. Dry carbon is lighter and holds a crisper weave than wet-layup (hand-laid) carbon, which is why the finish stays sharp under a clear coat.

Get your Cayenne kit fitted in Australia

If you would rather have the kit fitted by experienced hands, AME Motorsport can supply the full CMST Cayenne set and arrange professional fitment. Browse the complete CMST body kit range for Porsche, see the matching carbon front lips, or explore everything in the wider CMST carbon fibre body kit collection. Reach out for a fitment booking and shipping anywhere in Australia.