Various areas of wear in the finish are shown up close in the photo gallery below. This example features semi-tube-frame construction and was refinished during the refurbishment that was completed in 2014 in its current shade of white with blue and teal Löwenbräu livery replicating that worn by the car during the mid-1980s.

The Holbert-built GTRs were based on bodies-in-white provided by Porsche Motorsport and evolved into a semi-tube-frame layout as the program progressed. The racing platform was further developed in the US by Porsche USA consultant Al Holbert, whose shop constructed a series of Carrera GTRs for SCCA Trans-Am and IMSA competition. The factory Carrera GTR model was an evolution of Porsche’s bid to homologate a Group 4 racing variant of the 924 Turbo based on the production model’s unibody. This 924 Carrera GTR is now offered on dealer consignment in Redmond, Washington, with photos from refurbishment work, invoices from service between 2017 to 2019 totaling over $48k, a workshop manual, and a bill of sale. The car contested the Rennsport Reunion in 20 before participating in the Rolex Monterey Motorsports Reunion in 2019. Additional features include semi-tube frame construction, a five-speed manual transaxle with a limited-slip differential, 16” BBS wheels with turbofan covers, four-wheel independent suspension with a MacPherson strut front setup, and ventilated disc brakes with adjustable bias. Power is provided by a 1,984cc Audi inline-four with a water-cooled turbocharger, Bosch mechanical fuel injection, and dual water pumps. After its retirement from racing in 1986, the car changed hands four times before undergoing a refurbishment in Oregon that included a repaint in period Löwenbräu livery. The car was sold in 1983 to Bruce Leven’s Bayside Disposal Racing team, who raced it in IMSA Camel GT competition through the ensuing two seasons, including appearances at the 24 Hours of Daytona and 12 Hours of Sebring. Chassis 924-004 was campaigned by Holbert Racing during the 19 SCCA Trans-Am seasons with Doc Bundy and Hurley Haywood at the wheel. This 1981 Porsche 924 Carrera GTR is one of six examples built by Al Holbert Racing in Warrington, Pennsylvania, using bodies and components supplied by Porsche Motorsport.

Mg midget front suspension upgrade