Cars

PitchEngine Riley Racing Mazda RX-8

STREET TUNER: The Street Tuner (ST) class features a variety of sports cars and high-performance compacts that are as equally popular with KONI Challenge Series competitors as they are with today’s consumers. Unlike the bigger GS class where V-8s are allowed, ST is limited to four- and six-cylinder engines, although turbochargers and superchargers are permitted.

Engines produce between 170 and 240 horsepower depending on the car, while minimum weights range from 2,200 lbs. to 3,125 lbs. Fuel tank capacities range from 16.9 gallons to 17.9 gallons in the Mazda RX-8. Most competing ST cars have 17-gallon fuel tanks, including the Acura RSX-S, and the BMW 330i. Other popular vehicles in the ST class include the Chevrolet Cobalt SS Supercharged, Acura TSX, Subaru Legacy and the Mini Cooper S. Like the GS class, the only major modifications allowed in ST are in the area of safety. Top speed for ST race cars is about 135 mph.

Chassis: 2010 Mazda RX-8
Engine: Rotary Engine
HP: 275
Engine Builder: Mazda North America
ECU Specialist: Second Street Tuning
Transmission: 6-speed stock gearbox

Brakes

- Calipers: Mazda
- Rotors: Mazda
- Pads: Cobalt

Wheels

- Manufacturer: RacingHart
- Size: 17×8

Electronics

- Data Acquisition: Motec
- ECU: Mazda

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Riley Racing Volvo S40R

TOURING CAR: The allowed body styles in this class are coupes, hatchbacks, wagons or sedans. The cars permitted in TC are typically sold as “compact” cars, or “touring” cars. Eligible cars must have realistic seating for four (4) adults. Power output ranges from 180 to 200 hp. Weight varies depending on the power output of the individual drivetrain configurations. Front-wheel, rear-wheel and all-wheel drive configurations are permitted. Forced induction may be allowed on cars that have forced induction systems available from the manufacturer which do not void the factory warranties.

Chassis: 2007 Volvo S40R
Engine: 2.5L Turbocharged, Front Wheel Drive
HP: 265
Engine Builder: Volvo
ECU Specialist: Second Street Tuning
Transmission: 5-speed stock gearbox

Brakes

- Calipers: Alcon (front), Volvo (rear)
- Rotors: Alcon
- Pads: PFC

Wheels

- Manufacturer: Fikse
- Size: 17×8

Electronics

- Data Acquisition: Motec
- ECU: Motec

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