Porsche Cayman 987 Diffuser Fins For Sale - New and Used

Upgrade your Porsche 987 Cayman rear valance with an aggressive, track-inspired look without spending $700+ on a full composite tray or drilling permanent holes into your factory bumper.

These custom-engineered diffuser strakes are precision-modeled to perfectly contour to the factory lines of the 987 rear bumper, framing the center exhaust for a much sportier, squared-up stance.

Why Choose This Kit?

• Zero Permanent Modifications: Attaches securely using pre-applied, authentic 3M Extreme Duty double-sided tape. Perfect for leased cars, concours enthusiasts, or anyone who wants the ability to return the car to a 100% stock look down the road.

• Premium Material: Precision-manufactured from high-grade, UV-stable, and chemical-resistant black PETG. It features a clean matte finish that seamlessly matches the texture of your OEM factory plastic trim.

• Track-Tested Design: This exact adhesive attachment method and aerodynamic profile has been road and track-tested on high-performance platforms for over 3 years without lifting or fading.

• Complete Turnkey Kit: No trips to the hardware store required. We include everything you need for a flawless, millimeter-perfect installation in your garage.

What’s Included in the Box:

• (1) Complete Set of Precision-Contoured Rear Diffuser Strakes

• Pre-Applied Authentic 3M Extreme Duty Adhesive Tape

• Isopropyl Alcohol Surface-Prep Pads

• Detailed installation instructions

Fitment Notes:

• Fits all 2006–2012 Porsche 987 Cayman models (Base and S) with the factory rear bumper configuration.

• Crucial for Installation: Maximum bond strength depends entirely on proper surface preparation. The factory bumper must be completely free of waxes, detailing sprays, or ceramic coatings before application. Detailed prep instructions are included in the box.

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