GT4 Carbon Entry Sill Guard – Porsche 718 Cayman Carbon Fibre Sill Trim Set (Original Style)

OEM-Style Carbon Fibre Sills That Make Every Entry Feel Special

The Porsche 718 Cayman GT4 delivers raw performance and stunning engineering—but even the small details matter. That’s why our GT4 Carbon Entry Sill Guard set exists: to give you a durable, elegant, and performance-inspired touch every time you step into your car. Finished in premium carbon fibre with original-style branding, these sill trims offer a refined look while protecting your door thresholds from wear.

Because a GT4 deserves factory-level finishes, inside and out.

Designed for the 718 Cayman GT4 – Perfect Fitment

This entry sill guard set is engineered to match the dimensions and curvature of the 718 Cayman GT4’s door thresholds. It’s an exact replacement or upgrade for factory plastic sills and installs using pre-applied 3M VHB tape.

Compatible With:

• Porsche 718 Cayman GT4 (2020–present)

• Suitable for GT4 PDK and 6MT variants

• Fits all left-hand drive (LHD) models

• May require slight alignment adjustment on non-GT4 718 Cayman models

If you’re upgrading a base or S model, you may also want to add our GT4 Style Side Skirts for a seamless carbon flow across the car.

Dry Carbon Fibre – Lightweight and Stunning

Crafted from aerospace-grade dry carbon fibre, this sill guard set combines weight savings with a premium finish. Compared to wet carbon or plastic trims, dry carbon offers sharper weave definition, higher tensile strength, and better heat resistance.

Construction Details:

• 2×2 twill weave pattern

• UV-protected gloss clear coat

• Matte finish option available

• Feather-light, yet impact-resistant

• Each piece weighs under 150 grams

Because these trims are installed in high-traffic entry zones, the carbon is reinforced with a durable resin top layer that resists scratching and fading.

Factory-Inspired Styling with OEM Font

Each sill guard features etched-style “GT4” badging modeled after Porsche’s factory typography. The font, placement, and dimensions closely mimic OEM carbon sill trims, offering a clean, OEM+ aesthetic.

Style Highlights:

• Original “GT4” engraving style

• Black gloss base with satin white branding

• No stickers or printed overlays

• Factory-style font and alignment

• Understated design that complements carbon interior trim

If you already have GT4 Carbon Interior Trim Panels, this set ties the entire cabin together.

Easy Installation – No Cutting, No Drilling

This sill guard set installs using pre-applied 3M VHB double-sided adhesive, designed specifically for automotive applications. Because the guards are contoured to fit the factory sills, the install takes just minutes and requires no tools beyond a microfiber cloth and some surface prep.

Install Instructions:

1. Clean door sills thoroughly using isopropyl alcohol

2. Align each trim piece with the OEM threshold line

3. Peel backing from 3M tape and press firmly in place

4. Apply even pressure across the surface

5. Allow 24 hours for adhesive to fully cure

Because there’s no drilling involved, the installation is completely reversible if desired.

Protects While Enhancing Interior Ambience

In addition to aesthetics, these carbon sill trims provide a practical benefit: protecting your paint and OEM plastic from scuffs, scratches, and heel marks. Given how frequently these zones are stepped on, it’s a logical upgrade for any GT4 owner.

Benefits Include:

• Scratch protection for high-wear areas

• Carbon fibre durability in all weather conditions

• Improved resale appearance

• Adds value for detailing and show builds

• Lightweight alternative to factory stainless trim

Because Porsche cabins are built with purpose, these sills add character without clutter.

Why Choose Our GT4 Carbon Entry Sill Guard Set?

There are countless sill trims on the market, but very few offer the OEM-style branding, dry carbon construction, and exact GT4 fitment. This set is trusted by Porsche owners, performance shops, and show car builders alike for its combination of form and function.

Key Differentiators:

• 100% dry carbon fibre

• GT4-style logo in original font

• OEM fitment for the 718 GT4

• Fast and clean install

• Protected by anti-UV and anti-fade coatings

Pair this with our GT4 Carbon Air Intake Ducts or Cayman Rear Diffuser Upgrade to round out your carbon styling.