Verus Engineering Rear Diffuser Kit - Porsche 981 Cayman
Verus Engineering Rear Diffuser Kit - Porsche 981 Cayman - Image 2
Verus Engineering Rear Diffuser Kit - Porsche 981 Cayman - Image 3
Verus Engineering Rear Diffuser Kit - Porsche 981 Cayman - Image 4

Verus Engineering Rear Diffuser Kit – Porsche 981 Cayman

Fits Porsche 981 GT4, 981 GTS, 981 S

$2,199.95

The rear diffuser is one of the most efficient ways to generate downforce when properly engineered. Designed specifically for the Porsche 981 GT4, this diffuser was developed using advanced R&D tools to deliver both functional aerodynamic performance and refined aesthetics.

Using 3D scan data, CAD modeling, and ANSYS Fluent analysis, the diffuser was optimized to improve airflow management and rear-end stability. The three primary diffuser planes are constructed from 2×2 twill autoclave-cured carbon fiber, while the strakes are made from durable polyurethane for long-term durability.

The assembly mounts to existing chassis points using integrated sheet metal brackets, requiring no drilling or permanent modifications for installation.

Note: Outer strakes require minor trimming when used with the OEM GT4 muffler.

Before you buy

<a href="/wp-content/uploads/2026/03/Porsche-981-Rear-Diffuser-Install-Rev.-1-Verus.pdf">Porsche 981 Rear Diffuser Install Rev. 1 - Verus</a>
SKU: A0150A Categories: , Brand:

Description

Verus Engineering takes its name from the Latin word Verus, meaning true or complete, a reflection of the company’s philosophy that performance parts should be engineered as part of a complete system. Built by a team of passionate engineers, Verus focuses on applying sound engineering principles to solve complex performance challenges and deliver measurable improvements for high-performance vehicles.

Each Verus product is developed using advanced engineering tools and rigorous validation methods. Their aerodynamic components are designed using Computational Fluid Dynamics (CFD) to precisely model airflow, optimize pressure zones, and maximize aerodynamic efficiency before a product ever reaches production. These virtual simulations are paired with extensive real-world testing to ensure every component delivers meaningful gains in stability, cooling, and downforce.

The result is a line of motorsport-inspired components that blend cutting-edge engineering with proven track performance products built not just to look the part, but to function as highly effective aerodynamic solutions.

Additional information

Weight 15 lbs
Dimensions 42 × 36 × 4 in
Make

Boxster / Cayman, Porsche
Part

Aerodynamics
Trim

, ,

Technical Specs

WHAT IS INCLUDED
  • Diffuser Main Plane, Left-Hand
  • Diffuser Main Plane, Center
  • Diffuser Main Plane, Right-Hand
  • Bracket (4)
  • Strake, Hard Rubber (4)
  • Hardware Kit, Includes All Hardware Necessary for Install

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