Remastered Porsche so rare only 25 were ever made could be yours for eye-popping £850K – with 4L engine & 435 horsepower

AN INCREDIBLY rare Porsche 911 is on the market for a whopping £850,000.

The classic car is one of 25 made and has a 4.0-litre engine and is on auction.

Its name “Rennsport Aventura”, is embossed on the door along with, "Limited to 1 of 25".

It has a naturally aspirated, air-cooled engine that can reach 435 horsepower.

Interior pictures reveal a luxurious two-toned perforated leather combination in black and tan.

The car further features desirable performance upgrades including a six-speed manual transmission, Brembo carbon-ceramic brakes, and JRZ suspension.

The car is listed with RM Sotheby's as part of their Arizona auction taking place January 24 2025.

According to Gunther Werks, who is responsible for the remastered car, 80 percent of the 911's interior is bespoke.

The remaining 20 percent is replaced with brand-new Porsche equipment.

Arizona auction said: “Only 25 examples of the Remastered Carrera Coupe were built, giving each of the special cars instantaneous rarity and corresponding collectability.

“Each example has been individually named for its commission, which is embossed on the door sill along with script reading “Limited to 1 of 25,” a permanent record of the car’s unique identity."

They said that the work on the 911 cost £619,605 before delivery fees, including £166,170 for upgraded equipment.

“In commemoration of the Carrera-based boutique model, the striking car was displayed by Gunther Werks at The Quail: A Motorsports Gathering in 2022, where it debuted to overwhelming acclaim.

“Since then, the original owner has kept the 911 fastidiously garaged and maintained in showroom condition," the auctioneers said.

“Showing signs of little to no use, this magnificent Gunther currently displays “delivery mileage.”

“For power, Porsche’s standard 3.6-litre flat six-cylinder engine is entrusted to Rothsport Road and Race in Sherwood, Oregon, where it is stripped down and enlarged to 4.0 litres of displacement."

“The happy result of these sweeping upgrades is a significant boost in power, as the Rothsport engine develops 435 horsepower while generating 312 pound-feet of torque."