April 2nd, 2025 – Marion, Ohio—The National Tractor Pullers Association and S&S Diesel Motorsport of Seymour, Indiana have agreed that S&S Diesel will be the title sponsor for the Regional National Pro Stock Diesel 4×4 3.0 Truck Division for 2025.
S&S Diesel Motorsport is a world leader in modern diesel injection and vehicle controls. The company creates innovative products for top-level competition and California Air Resource Board- (CARB-) compliant street use.
S&S Diesel Motorsport offers both engine and hub dynamometer testing, next-level competition and on-road durability solutions, precision fuel injector and high-pressure pump manufacturing, engine control and calibration support, and engineering consultancy for manufacturers.
S&S Diesel Motorsport products are made with the industry’s best components, tested on the world’s best equipment, by the world’s best people.
“We have an immense respect for the 3.0 truck pullers who devote the time and money to compete in a busy schedule across five states,” said Justin Norris, S&S Diesel Motorsport Sales and Marketing Director. “I can’t think of a better way to push fuel system innovation than air-limited pulling.
“Pullers demand horsepower and they’re resourceful at finding it,” Norris observed. “The NTPA has a rich tradition in truck and tractor pulling, and we’re excited to be a part of it!”
The S&S Diesel Pro Stock Diesel 4×4 3.0s are stock-appearing, high-performance diesel-fueled trucks limited to one turbocharger with 3-inch inlet and outlet diameters.
The 3.0s are scheduled to appear 19 times within the NTPA’s Region II in 2025: Arcola, Geneva, and Roanoke, Indiana; Fremont, Charlotte, Monroe, Coldwater, and Centreville, Michigan; and Paulding, Marion, Carrollton, Marysville, Eaton, Lisbon, Zanesville, Norwalk, and Greenville, Ohio. Top finishers will be invited to the 38th annual Enderle Pull-Off in Urbana, Ohio on Saturday, September 13.
“We are delighted to connect our 3.0 division with S&S Diesel Motorsport,” said Gregg Randall, the Association’s Executive Director. “We believe this to a sponsorship that will generate interest among not only the competitors themselves but also fans of and potential future participants in the smoker truck classes.”