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The new 718 GT4 and Spyder has been receiving excellent reviews from magazines and customers alike, however there is one stand out point which is mentioned over and over. The sound! Gone is the soulful scream of the 981 GT4 & Spyder instead replaced with a flat and uninteresting exhaust note, drastically reducing the all-important fun factor of this otherwise fantastic car.

The introduction of WLTP regulations have seen the introduction of OPF (exhaust particulate filters) and very restrictive rear silencer assemblies into the latest generation of models. The OPF serves as an emissions device but has a secondary impact which is very obvious to anyone who's heard just how muted all of the latest generation cars sound.

We are releasing exhaust solutions for these OPF equipped cars, releasing performance and unlocking the glorious sound.

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


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


  • £5195.00 GBP
  • All prices are listed without UK VAT included (20%) All UK based customers orders will be subject to UK VAT

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.

    Sale price£5,995.00 GBP
    INCONEL RACE MANIFOLDS Sale price£5,995.00 GBP