Catless Exhaust Manifold for Porsche Boxster Cayman 718 Spyder GTS GT4

Unlock maximum naturally‑aspirated performance from your Porsche 718 4.0L platform with the STRATEC Catless Performance Exhaust Manifold Headers, engineered to eliminate factory catalytic restrictions and dramatically improve exhaust flow.

Designed for the 4.0L flat‑six engines found in the 718 Spyder, GTS 4.0, and GT4, these race headers reduce backpressure, enhance exhaust scavenging, and deliver sharper throttle response with stronger mid‑range and top‑end power. Expect quicker revving, louder volume, and a raw motorsport flat‑six sound.

Precision fabricated from high‑grade stainless steel with mandrel‑bent runners and TIG‑welded construction, this STRATEC system installs directly to factory mounting points for clean bolt‑on fitment.

Performance Benefits

• Catless race header design for maximum exhaust flow

• Reduced backpressure for faster throttle response

• Increased mid‑range and top‑end horsepower

• Aggressive flat‑six exhaust character

• Mandrel bent stainless steel runners

• Precision TIG welded construction

• Direct bolt‑on installation

Fitment

Porsche 718 Cayman GT4 – 4.0L NA Flat‑Six
Porsche 718 Boxster Spyder – 4.0L NA Flat‑Six
Porsche 718 Cayman / Boxster GTS 4.0 – 4.0L NA Flat‑Six
Approx. Model Years 2020–2024