Porsche 718 Cayman GT4 GTS Exhaust Tip

Porsche 718 Cayman GT4 GTS Exhaust Tip — Racing Downpipe

This 718 GT4 exhaust, designed as a straight SS304 stainless steel downpipe, is intended for the Porsche 718 Cayman GT4, Spyder, and GTS 4.0L. A premium racing part to unleash the naturally aspirated flat-six. It is the modification chosen by demanding drivers: at the front of the line, where every restriction pays for itself in character, this downpipe restores the 4.0L its purest voice and its most direct revving.

A design tailored for your Porsche 718

Built to fit into the 4.0L's original exhaust line, this downpipe connects the manifold to the main exhaust with competition-worthy machining precision. Each racing downpipe is designed to the exact dimensions of the 718 chassis: aligned flanges, correct lengths, no fitment play — the part takes the place of the original as if it had always been there.

Technology, quality & finish

Available with or without a catalytic converter, or with a high-performance catalytic converter with variable cell density (100, 200, or 300 cells), in SS304 stainless steel resistant to extreme temperatures. SS304 stainless steel is the benchmark grade for competition lines: it withstands the temperatures of the flat-six pushed on the track without deformation or corrosion. The 200-cell sport catalytic converter offers the best flow/filtration balance for mixed road and track use, while the 100-cell version aims for maximum performance.

• Unleashed flat-six breathing — reduced restriction right from the manifold exit.
• Purer racing sound — the naturally aspirated 4.0L gains presence and metal.
• Catalytic converter choice — none, 100, 200, or 300 cells depending on your use.
• Competition SS304 stainless steel — resists extreme track temperatures.
• Original dimensions respected — perfect integration into the existing line.

Installation on your Porsche 718 Cayman

Installation reserved for a professional, replacing the original downpipe. Check the legality of the version without a catalytic converter according to your local regulations before ordering. A specialized Porsche workshop performs the installation of this Cayman GT4 exhaust in a few hours on the original flanges — a reversible operation that preserves your original line for a possible return to the factory configuration.

Which catalytic converter density to choose for road or track use?

The rule is simple: the lower the density, the freer the flow — and the more intense the sound becomes. For a Porsche GT4 exhaust used daily, the 300 cells remains the closest to original compliance; the 200 cells is the road/track compromise favored by many; the 100 cells and the free version are intended for track-dedicated cars, where every tenth of a second counts. In all cases, the sport exhaust line must remain compliant with the regulations of your place of registration.

Why order your 718 GT4 exhaust from Becquet Voiture?

Because a racing part is chosen from a specialist: Becquet Voiture, a French automotive tuning shop, offers an expert catalog of exhaust tips and performance parts for Porsche, Audi, BMW, and Volkswagen, with support based in France that knows its products and assists you up to the installation.

Unleash all the racing sound of your 718: order your downpipe today.

Type: Downpipe / racing manifold
Compatible Brand / Model: Porsche 718 Cayman GT4 / Spyder / GTS 4.0L
Years: Depending on version
Material: SS304 stainless steel
Catalytic converter type: Without catalytic converter or 100/200/300 cells
Position: Front
Installation: By a professional, to be checked depending on version
Condition: 100% New
Main function: Engine performance and exhaust sound