A rear diffuser is one of the most effective ways to give a Porsche 991 a purposeful, race-inspired rear end. This polyurethane diffuser transforms the look of the 2012–2015 991.1 Carrera while cleaning up airflow exiting the underbody.
What is the 991 rear diffuser?
It’s a rear bumper diffuser that adds aggressive, GT-style detailing to the lower rear of the car. Beyond looks, it helps manage underbody airflow for improved high-speed stability.
Why polyurethane?
Molded from flexible, crack-resistant polyurethane, it absorbs minor impacts and returns to shape instead of cracking like fiberglass. It arrives ready for scuff, prime, and paint.
Fitment
Fits the Porsche 911 991.1 Carrera (2012–2015). Confirm your rear bumper and exhaust configuration before ordering, as layouts vary.
Installation tips
The diffuser uses OEM-style mounting points and includes hardware. DIY installation is achievable; professional fitment ensures the best alignment and paint finish.
Styling and performance
Pair the diffuser with a front lip and side skirts to create a balanced aero package that looks aggressive and improves stability. It’s a standout upgrade that modernizes the 991’s rear.
FAQ
Does it fit my exhaust? Confirm your exhaust layout before ordering, as rear configurations differ.
Will it crack? Polyurethane flexes and resists cracking under normal driving.
Upgrade your 991’s rear
Give your 991.1 a race-inspired rear end. Shop the Porsche 991.1 Carrera Rear Diffuser here.