01
Porsche GT4 Multilink Rear Suspension Kit
In 2016 I designed a kit to convert the Cayman GT4 rear suspension from strut to multilink using the 997 RSR camber and toe curves as targets. I decoupled the strut constraint and replaced it with two links between the rear upright and the chassis. No welding required on the car, just a few drilled holes. The increased camber gain improved high speed stability, the higher roll center height and roll center control improved low speed agility, and the reduced toe out in rebound improved braking stability. Back to back testing at Sebring on slick tires revealed 2.5 seconds per lap faster. The rear grip at the limit is more friendly and the car is more fun to drive on track. After completing 2500 miles at Sebring on slick tires, I started producing kits in 2017. More than 25 kits have been installed since then. In 2020 I received a U.S. Patent for the invention.
02
Porsche Swan Neck Rear Wing Riser Kits for 992 GT3 and 718 GT4RS
The latest GT3 and Cayman GT4RS models have swan neck (top surface) mounted rear wings. This makes raising the rear wing more complicated than earlier bottom wing surface mounts. In 2022 I designed a 992 GT3 riser extension to raise the wing 4 inches, and in 2023 I designed and produced brackets and 3D printed covers to raise the GT4RS wing 5.5 inches. The GT3 kit requires modifying the stock risers while the GT4 kit reuses the stock risers. Both kits move the rear wing up out of the rear view mirror sight line, as well as rearward, which increases rear downforce and high speed stability for track driving.
992 GT3:
718 GT4RS:
