Porsche 981 2.7/3.4 S, Spyder 3.8

Transform the sound of the Porsche 981 2.7/3.4 S, Spyder 3.8 with the DCE Parts Crossover Valved Cat-Back Exhaust. A completely different approach to the familiar flat-six exhaust note.

The result is a sharper, cleaner and more exotic exhaust note that builds in intensity as the revs rise. At higher RPM, the system moves away from the conventional deep Porsche rumble and develops a distinctive motorsport-inspired scream. 

The Crossover difference

Most aftermarket Porsche 981 exhaust systems follow a relatively conventional layout and primarily increase volume. The crossover configuration is designed to create a more distinctive interaction between the exhaust pulses from both cylinder banks.

This gives the system its characteristic sound:

• A cleaner and more defined exhaust note
• A sharper, faster-rising tone under acceleration
• A more exotic, motorsport-style sound at higher RPM
• Clearer transitions through the rev range
• A character that becomes increasingly intense as the engine approaches redline

The result is not simply another loud 981. It gives the car a sound identity of its own—one that is immediately recognisable both inside and outside the vehicle.

Valved sound control

The integrated exhaust valves allow you to switch between two very different personalities.

With the valves closed, the system offers a more restrained exhaust note for cold starts, residential areas and longer motorway journeys.

Open the valves and the Crossover is allowed to deliver its full character: louder, sharper and considerably more intense, with the strongest transformation appearing under load and at higher engine speeds.

Choose your configuration

The DCE Parts Crossover Cat-Back is available in multiple specifications, allowing you to select the balance between volume, comfort, weight and sound that best suits your 981. 

Straight-through RACE configuration

The most aggressive option.

With no additional rear muffler, this configuration delivers maximum volume, response and high-RPM intensity. It is designed for owners who want the clearest possible Crossover effect and do not want the car’s sound to be held back.

Expect a rawer cold start, a stronger presence at lower RPM and the most dramatic motorsport-inspired sound with the valves open.

Please note: This exhaust setup is extremely loud when combined with catless headers

Muffled Valved configuration

The more road-focused option.

The optional muffler reduces overall volume and softens the more intrusive frequencies without removing the distinctive Crossover character. It retains the sharper tone and high-RPM transformation while providing improved comfort during normal driving and longer journeys. 

This is our recommended configuration for owners who regularly use their 981 on the road but still want a serious difference when the valves are opened.

Please note: This exhaust setup may still have deep exhaust notes with valves closed with catless headers

Stainless steel or titanium

Stainless steel

Our stainless-steel version offers excellent durability, heat resistance and value. Its slightly greater mass contributes to a solid, full-bodied exhaust note and makes it an excellent choice for frequent road use.

Titanium

The titanium version significantly reduces weight and produces a thinner, sharper and more metallic sound signature. Titanium also changes character as it reaches temperature, giving the exhaust an even more pronounced motorsport edge during hard driving.

Choose titanium when minimum weight, premium materials and maximum sound definition are the priority.

Combine it with DCE Parts downpipes and headers

The Crossover Cat-Back can be installed independently, but its full potential is released when combined with our DCE Parts downpipes and headers.

The complete system allows the exhaust pulses to travel through a less restrictive and more carefully matched layout from the cylinder heads to the tailpipes. This further improves sound definition, increases volume and makes the high-RPM scream considerably more pronounced.

For the most complete DCE Parts exhaust experience, we recommend the following combination:

• DCE Parts headers
• DCE Parts downpipes
• DCE Parts Crossover Valved Cat-Back

Together, these components create a more cohesive exhaust system rather than combining unrelated parts from different manufacturers. The result is a stronger transformation throughout the entire rev range, with a particularly dramatic sound under full load.

Available options

• Valved Crossover cat-back exhaust
• Straight-through or muffled configuration
• Stainless-steel construction option
• Lightweight titanium construction option
• Designed for use with the factory-style valve-control strategy or with aftermarket electronic valves
• Compatible with DCE Parts headers and downpipes
• Professional installation available at DCE Parts

Important information

Sound level, tone and potential cabin resonance depend on the selected material, muffler configuration and the presence of aftermarket headers or downpipes.

A complete system without mufflers will be considerably louder than the cat-back alone. For cars used frequently on public roads, we generally recommend the muffled configuration.

Aftermarket downpipes and headers may affect emissions compliance, warning lights and road legality depending on the vehicle specification and local regulations. Please contact us before ordering if you are unsure which configuration is suitable for your vehicle.

Note:

Certain products, such as exhaust components or tuning software, may alter or remove emissions systems. These parts are intended for off-road or motorsport use only and may not be legal for road use in your country. It is the buyer’s responsibility to ensure compliance with all local laws and regulations. Use at your own risk. These products are intended for off-road, race, or competition use only, and are not legal for use on public roads or vehicles registered for street use in the United States. It is the customer’s responsibility to ensure compliance with all local, state, and federal laws. Installation or use of these products on pollution-controlled vehicles may violate the U.S. Clean Air Act and could result in significant fines or penalties.