Description:

FOR SALE: The "Cayman GT4 RX" – A Bespoke 981-Based Performance Masterpiece

​Overview

Commissioned to be the definitive alternative to a factory 718 GT4 RS, this "Cayman GT4 RX" is a professional, no-compromise build that combined the agile 981 chassis with the formidable power of a 3.8-litre 991 GTS powerplant. Unlike iterative projects, this was a ground-up, single-phase build; the vehicle was sourced by Parr, stripped to a bare shell, and engineered in one comprehensive process to ensure total technical harmony.

​Expert Endorsement & Provenance

This vehicle was featured in 911 & Porsche World as an editorial highlight of their 2023 "best buys" theme. It has been meticulously maintained and used only sparingly at Brands Hatch, Goodwood, and Silverstone. The car is offered by a former competitive racing driver with a career in the Porsche Carrera Cup Great Britain, British GT, and Britcar championships. Having personally piloted the vehicle, I can confirm it possesses the authentic characteristics and handling precision of a top-level racing machine.

​Technical Specification Highlights

• ​Engine & Drivetrain: 3.8-litre, first-generation 991 GTS engine (450bhp+) with extensive bespoke ECU remapping for both engine and gearbox.
• ​Performance Induction & Exhaust: Features a bespoke  high-performance induction setup that provides an immersive, race-inspired acoustic experience inside!- the cabin!
• ​Handling & Braking: Professionally installed JRZ/Bilstein dampers with there own ecu all set up by parr also front lift for those high-speed bumps and sharp rise car parks and a full high-performance Brembo 6 pot GT braking system.
• ​Aerodynamics & Interior: The exterior features an aggressive carbon swan-neck rear wing that makes this car special! and a TechArt carbon-fiber bonnet, which is visible from the driver's seat for a true performance aesthetic.
• ​Bespoke Cabin: The interior has been completely reconfigured, featuring genuine leather Recaro Sportster CS heated seats, professionally embroidered with the "Parr" insignia.
• ​Refinement: The vehicle retains full functionality, including climate control (air conditioning) and the added safety of front and rear camera systems.

​Investment & Documentation

The total expenditure for this bespoke build, including the donor vehicle, engineering, and parts, reached approximately £170,000 The vehicle is sold with a complete and exhaustive project dossier, including all original invoices, professional build records, and extensive photographic documentation of the complete-shell transformation. The depth of this paperwork clearly distinguishes this build from any standard modification project this is basically still a freshly built car 

​Inquiries

This is a unique opportunity to acquire a "GT-grade" track car with impeccable provenance and negligible track hours. Serious inquiries only.

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