Todd Treffert and the 901 Shop 1974 No. 41 Porsche 911 Carrera RSR “Baby” Turbo Capture Historic GT Championship
DAYTONA BEACH, Florida (December 16, 2025) – It took top HSR driver Todd Treffert nearly a decade to win his first HSR Classic race, but in March’s season-opening HSR Classic Sebring 12 Hour presented by Mission Foods, he finally broke through. Then he kept going.
Driving his sharp looking 901 Shop 1974 No. 41 Porsche 911 Carrera RSR “Baby” Turbo, Treffert built on the Sebring win with two more Run Group overall victories to secure a series-leading three outright wins in the year’s four HSR Classic Endurance Championship presented by Mission Foods races.
Securing the Historic GT class title, Treffert also won September’s inaugural HSR Classic Road Atlanta 10 Hour presented by Mission Foods and sealed the deal at the series-ending HSR Classic Daytona 24 Hour presented by Mission Foods in November.
“The Mission Classic Endurance series is unique in vintage racing, and I am proud to be one of the inaugural season winners,” Treffert said. “I am happy to have been able to participate in all four Mission Classic Endurance events this year. There was some stiff competition initially at Sebring with Charles Espanlaub in a Porsche and a Toj and some Chevrons. Then at Atlanta we were about to get smoked by the Jim Farley and Jan Magnussen in the Lola, and brothers Theo Bean and Patrick Bean in their Monza, but we made it through for the win.”
The only race Treffert didn’t win overall? That was a close second-place finish in June’s HSR Classic Watkins Glen 6 Hour presented by Mission Foods that still garnered first place points in the Historic GT division.
“At The Glen and up against the more modern machinery was the only race I did not win overall, but it was a lot of fun there and all season to run with such a diverse and unique field of cars and competitors,” Treffert said.
It wasn’t always as easy as it was this season for Treffert. Although he has an endless career streak of HSR race wins and series championships, finally cracking the HSR Classic win column called for an entirely different path.
Treffert, along with Brady Refenning and his 901 Shop team, built a special small displacement 911 Turbo inspired by a short run of three 2.1-liter Turbo RSRs Porsches produced in 1974. The build also continued the legacy of the first Porsche Treffert used to truly dominate in HSR in the previous decade. Treffert and his “Darth Vader” black SpeedConcepts 1974 No. 14 Porsche 911 IROC RSR won just about everything in sight before the car was nearly written off in a heavy incident in 2019’s season-ending race.
“After crashing the black 3-liter car at Sebring in 2019, we pretty much wrote off the tub, but the more Brady and I talked about it, and when I remembered I had an original injection pump that would work with a 2.1 turbo motor, we decided to try and make it work. While I want to recognize the whole 901 shop crew for all they do for me with all of my cars, Chris Prince and Brady deserve special recognition for their effort with the turbo car.”
After a season of development and a few expected new car teething issues, Treffert and the reincarnated Porsche returned to their days of domination in this year’s HSR Classic Endurance Championship presented by Mission Foods.
The 2026 HSR racing season starts right back at Sebring International Raceway this February 12- 15 with the HSR Sebring Pistons and Props presented by Alan Jay Automotive Network. The popular Pistons & Props event makes a race date swap next year with the HSR Sebring Classic 12 Hour presented by Mission Foods, which returns to its traditional December date after one year running this past March the weekend before the Mobil 1 Twelve Hours of Sebring IMSA WeatherTech SportsCar Championship race.
About HSR: An International Motor Sports Association (IMSA) property, Historic Sportscar Racing (HSR) was formed in the mid-1970s with an event at Road Atlanta. There was one goal then and it remains true today: to celebrate the racing cars from the past. As a “time machine” of sights and sounds, HSR provides a venue for competitors and spectators alike to share in the wonderful history and excitement created by the cars that competed at race tracks around the world. HSR currently sanctions eight vintage and historic racing events at some of the world’s most renowned race tracks, including Road Atlanta, Sebring International Raceway, Daytona International Speedway and more. The complete schedule and full event information can be found on HSR’s website at www.HSRRace.com. Look for the HSR Channel on YouTube and follow HSR on Facebook at www.Facebook.c
