Genuine Porsche 964 Carrera Cup Muffler Delete Pipe (Cup Pipe)

Genuine Porsche 964 Carrera Cup Main Muffler Delete Pipe (Cup Pipe)

Never Installed After Coating

Original Porsche 964 Carrera Cup–style primary muffler delete pipe, removed from a Porsche 964 with under 5,000 miles of use.

This pipe replaces the primary/main muffler and delivers a significant reduction in backpressure, resulting in noticeably sharper throttle response and a more aggressive exhaust note. Period testing and Cup-spec setups show gains of up to ~25 HP, nearly a 10% increase over the stock ~250 HP output when paired with appropriate supporting exhaust components.

The pipe features

Thermal coating on the exterior

Copper coating on the interior

These coatings help retain exhaust gas temperature, improving exhaust gas velocity and flow efficiency. This is especially beneficial on air-cooled 911s, as it helps reduce heat soak in the engine bay and keeps intake air temperatures lower—supporting more consistent performance.

Key details

High-quality stainless steel construction

Direct replacement for the primary muffler, located at the rear of the engine just ahead of the rear valance

Approximately 25 lb weight reduction from the rear of the car

Can be run on its own or paired with a secondary muffler bypass for maximum performance and an authentic Carrera Cup–style exhaust sound

No ECU reprogramming required

Ideal for track builds, Cup-inspired cars, or drivers seeking a raw, motorsport-correct sound and feel