Porsche Cayman GT4 (2016-2025) 718 JCR Inconel Race Manifolds

Introduction

The new 718 GT4 and Spyder have been receiving outstanding reviews from both magazines and customers. However, there is one recurring issue that stands out - the sound. The soulful scream of the previous models, the 981 GT4 and Spyder, has been replaced with a flat and uninteresting exhaust note. This has significantly reduced the overall fun factor of an otherwise fantastic car. The latest generation of models, due to the introduction of WLTP regulations, have implemented OPF (exhaust particulate filters) and highly restrictive rear silencer assemblies. While the OPF serves as an emissions device, it has also had a noticeable impact on the sound of these cars. In response, we have developed exhaust solutions specifically for these OPF-equipped cars, providing not only a boost in performance but also unlocking the glorious sound that has been muted by these regulations.

Direct Replacement / Modular Fitment

The JCR Inconel Race Manifolds are a full direct replacement product for the OEM 718 GT4 and Spyder manifold assembly. No fabrication required and no additional parts. Simply remove the factory exhaust manifolds and replace with the JCR Inconel Race Manifolds

Our Inconel Race Manifolds are also supplied with copper fitting hardware to ensure no trouble when its time to return to stock.

Light Weight

Due to the 100% Inconel construction the JCR Inconel Race Manifolds removes an impressive amount of weight from the factory exhaust set up. This truly is a win win modification.

Power Increase

Every component of the JCR Exhaust line is guaranteed to improve HP & TQ with varying results dependant on the combination of parts. Our most extreme free flowing system installed on the 718 GT4 / Spyder / GTS 4.0 will see gains up to +52.40WHP & +47.00WTQ (60.26HP/54.05TQ) along with great improvements in engine response and mid range torque. Deleting the highly restrictive factory cats not only brings a hard edged race car sound but also drastically improves flow resulting in increased HP & TQ

Key Features

• 100% Inconel Construction
• Direct Replacement for OEM Manifolds
• -4.77kg (10.52lbs) Weight Reduction vs OEM
• Improved Sound Quality
• +33.42WHP & +29.77WTQ (38.43HP/34.23TQ) vs OEM Exhaust Manifolds

Applications

• 718 Cayman GT4
• 718 Boxster Spyder
• 718 Cayman GTS 4.0
• 718 Boxster GTS 4.0
• 718 Boxster 25 Years

Lead Times

• JCR products are produced in batches, we aim to carry stock of all products however in the event that parts aren't in stock please allow approximately 30-60 business days after the point of ordering before your parts ship.

• For lead time estimates prior to ordering please contact us via the contact page.