GT4 Rear Diffuser we also offer lowering springs

we also offer lowering springs so you can get your car as low as you want

Dependent on the set angle of attack (AOA)

Swan neck mounting design for more efficient performance

5 times the production of the OEM rear wing

Hoses & T-clamps

GT4 Rear Diffuser we also offer lowering springsInstallation Instructions GT4 Rear Diffuser Overview: A properly designed rear diffuser not only looks great on your car, but is a very efficient way to add downforce. Using CFD software and 3D scans, the DBJ rear diffuser creates a completely flat bottom from the oil pan back to the rear of the car. This flat bottom helps reduce unwanted drag and produces downforce at the rear of the car. Although designed specifically for the 981 GT4, the DBJ