Porsche 997 rear diffuser urethane Strossek RUF style fits 05-08 Carrera & 4S

How Easy is it to Install?
The BetterBodies Motorsport Porsche 997 Rear Diffuser – Strossek RUF Style is designed for OEM-style fitment, made to align perfectly with the factory rear bumper of the 2005–2008 Porsche 997.1 Carrera, Carrera S, Carrera 4, and Carrera 4S. This diffuser is molded with pre-marked mounting points for precision alignment and comes with pre-installed 3M automotive-grade double-sided tape plus the required mounting hardware for a secure fit. Made from premium-grade polyurethane, it ships in a raw black finish and will require standard body shop prep (scuff, prime, paint) if you wish to color match it to your Porsche. While skilled DIY installers can complete the job, we recommend professional installation to ensure perfect fitment and finish. If in stock, it ships within 24–48 hours; if backordered, please allow 3–8 business days for dispatch.

Appearance
Drawing inspiration from Strossek and RUF performance styling, this diffuser adds a bold, motorsport-inspired edge to the rear of your 997.1. Its sculpted fins and aggressive lower section create a more planted and track-ready look while maintaining harmony with the original Porsche design. Whether painted to match or left in its contrasting black polyurethane finish, it delivers a premium upgrade that makes your Carrera or Carrera 4S stand out.

What is Polyurethane?
Manufactured from our proprietary GT3TEK polyurethane blend, this diffuser offers exceptional durability and flexibility. Unlike fiberglass or ABS plastic, polyurethane can flex under stress and return to its original shape, making it highly resistant to cracks, chips, or breakage. This flexibility also allows for fine adjustments during installation, ensuring an OEM-quality fit.

Performance Capabilities
In addition to improving aesthetics, the aerodynamic design of this Strossek RUF style diffuser helps enhance rear airflow separation, reducing turbulence and contributing to improved stability at higher speeds. When combined with other aerodynamic upgrades like a front lip or side skirts, it creates a more balanced and planted driving feel.

Will it Crack or Break?
ABSOLUTELY NOT, Polyurethane is built to handle real-world driving conditions. It flexes when encountering curbs, steep driveways, or road debris, then returns to its original form without structural damage. Most impacts result only in minor cosmetic marks, which can be refinished if desired.

Exact Fitment (Models & Years)
Fits: Porsche 911 997.1 Carrera, Carrera S, Carrera 4, Carrera 4S (2005–2008)
Does NOT fit: GT3, GT2, Turbo, or Wide Body bumpers without modification.

What’s Included

• Porsche 911 997.1 Strossek RUF Style Rear Diffuser in GT3TEK Polyurethane

• Pre-installed 3M automotive-grade tape

• Mounting hardware

• Basic installation guide (QR code/link)

Shipping & Availability (Worldwide)
We ship worldwide from our California facility. In-stock products ship within 24–48 hours (Mon–Fri), while backorders dispatch in 3–8 business days. US deliveries typically arrive within 2–7 business days, while international shipments average 5–12+ business days depending on customs clearance. All products are packaged securely to prevent damage or deformation during shipping.