Introduced in 2002, the MAX DD2 is the two-speed version of the MAX engine. Having the most power and torque, DD2 is the fastest class in MAX Challenge competition. Like the 125 MAX, the DD2 is used for both Senior (age 15 and up) and Masters (32 years-of-age and older) competition.
Technical Specifications
| Age | 15+ years |
| Race Class | National – International |
| Horsepower | 32.6 hp (24 kW) at 11,750 rpm |
| Maximum Torque | 14.8 ft./lb. (20 Nm) at 10,500 rpm |
| Weight | Bare engine: 37 lbs (16.8 kg), with complete power pack: 64.4 lbs (29.2 kg) |
| Special features | Chainless drive system, 2-speed gearbox, operated by shift paddle from the steering wheel |
| Power Pack | silencer, carburetor, fuel pump, engine, exhaust system, radiator, battery, battery box, cable harness, start button, ON/OFF switch |
| Chassis compatibility | Specifically designed DD2 chassis with a wheel base up to 1,050 mm |