Engine Versions
There are several different versions of the engine. The original has a power valve and produces around 28.5 hp (21.3 kW), and is used by racers aged 15 or older. The DD2 is another fully powered version which has two gears and is direct drive in that the axle goes through the engine without need for a chain.
125 MAX "base" configuration:
- 21 kW (28 hp) at 11,500 rpm
- recommended as of 15 years
- has a cylinder with exhaust valve
125 Junior MAX configuration:
- 15 kW (20 hp) at 8,500 rpm
- recommended for juniors from 13 to 16 years
- has a cylinder without exhaust valve
125 Mini MAX engine configuration:
- 10 kW (13 hp) at 8,500 rpm
- recommended for children from 10 to 13 years
- has a cylinder without exhaust valve, and intake and exhaust restrictors
125 Micro MAX engine configuration:
- 5 kW (6.7 hp) at 6,500 rpm
- recommended for kids from 8 to 10 years
- same as previous with a different exhaust and radiator, fitting smaller chassis adapted to kids size
Each of the above configurations can be upgraded or downgraded to any of the other configurations by replacing various accessories and components.
125 MAX DD2 engine configuration:
- 24 kW (32 hp) at 11,750 rpm
- recommended as of 15 years
- has a two-speed gearbox operated by shift paddle from the steering wheel, and a chainless drive system
Read more about this topic: Rotax Max
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