Rear Bumpers
Fits
Porsche 981 Cayman GT4
Rear diffusers are extremely efficient downforce producing devices when designed properly. We set out to produce a functional rear diffuser for the Porsche 981 GT4 using state of the art R&D processes. The assembly blends function and form utilizing carbon fiber, sheet metal, and hard rubber.
Utilizing scan data, CAD, and ANSYS Fluent analysis software; we were able to design and produce a functional and aesthetically pleasing rear diffuser for this Porsche chassis.
The three main diffuser planes are produced from 2x2 twill, autoclave cured, carbon fiber; while the strakes are manufactured from durable polyurethane for longevity.
The entire unit bolts to chassis locations through multiple sheet metal brackets. There is absolutely no drilling or fabrication required for installing this rear diffuser.
*Outside stakes require slight trimming if installing with OEM GT4 muffler*
Kit Includes
• Diffuser Main Plane x 3 (Left, Right and Centre)
• Bracket (4)
• Strake, Hard Rubber (4)
• Stainless Steel Hardware Kit, Includes All Hardware Necessary for Install
- Porsche Cayman GT4 3.8L 2015-16
Fits
Porsche 981 Cayman GT4
Finishing what Porsche started, these fill the void in the 981's underbody. The middle of the vehicle creates drag on automobiles and covering the turbulent areas with flat sheet aluminum reduces this significantly. By improving the airflow to the rear diffuser; the diffuser is able to function better as well.
Produced from sheet aluminum and powder-coated a durable black, they look great and function as intended. Pair this with our rear diffuser to reduce lift and drag simultaneously.
Through CFD, we have estimated the underbody panels reduce the coefficient of drag (cD) by 0.007; or 7 points.
* Will work with other Porsche 981 models, but does take slight modification to mount.*
Kit Includes
• Flat Underbody Pane x 2 (Left and Right)
• Bracket (2)
• Hardware Kit, Includes All Hardware Necessary for Install
Features
Reduce Drag
Increase Fuel Mileage
Improved Diffuser Function
Flat Underbody
Simple to Install
CNC Cut 5052 Aluminum
Powder coated Black for Durability
Produced in the USA
Stainless Steel Hardware Throughout
Rivet-Nut Install Tool Included
- Porsche Cayman GT4 3.8L 2015-16
Fits:
Porsche 981 Cayman GT4 2016
Upgrade the 981 Cayman GT4 style by replacing the oem plastic parts with more performing and eye catching carbon fiber parts with exposed carbon weave. Great Solution as a replacement and to lightweight your GT4.
Manufactured in carbon fiber prepreg autoclave molded at high temperature & pressure with twill 2×2 200 gr. fabric and final lacquering clearcote gloss 90.
Please note: This is a special-order item manufactured to order. In some cases, please allow 4 - 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SFC981505511
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 3.8L 2015-16
This is a top quality aftermarket part.
Fits:
Porsche 981C Cayman 2014-16
Porsche 981 Boxster 2013-16
Click 'Zoom in' for large parts diagram.
Diagram ref no 3, 4, 5 and 6
This diffuser is not suitable to accept parking sensors. We recommend relocating the sensors into rear bumper. (Drilling required.)
Please note: Delivery time is normally 6-8 weeks.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98150585380
The product you are viewing cross references to these numbers
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster S 981 3.4L 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16