Rotax Max

The Rotax Max Evo 125 Engine is a two-stroke 125 cc (7.6 cu in) engine designed by Rotax, part of Bombardier Recreational Products (BRP), to provide low cost, but high speed kart racing.

Built in Austria, the engine is liquid cooled, equipped with a balance shaft, integrated water pump, electric starter and centrifugal clutch. Its combination of onboard electric starter and centrifugal clutch simplifies its operation

Variants of the Rotax Max Evo range:

125 MAX EVO  configuration:

  • 22 kW (30 hp) at 11,500 rpm
  • Maximum rpm 14,000 rpm.
  • recommended as of 16 years
  • has a cylinder with exhaust valve

125 Junior MAX configuration:

  • 17 kW (23 hp) at 8,500 rpm
  • Maxiumum rpm 14,000 rpm
  • recommended for juniors from 13 to 16 years
  • has a cylinder without exhaust valve

125 MAX DD2 engine configuration:

  • 25 kW (34 hp) at 11,750 rpm
  • Maximum rpm 14,000 rpm
  • recommended as of 16 years
  • has a two-speed gearbox operated by shift paddle from the steering wheel, and a chainless drive system

Rotax 125 Max - Junior - Specs

Age Range13 - 16 Years
Race ClassNational/International
Maximum Performance15 kW / 20.4hp at 8500 rpm
Maximum Torque17 Nm at 8500 RPM
WeightBare Engine: 11.80kg / 26.0lbs
With Power Pack: 23.6kg / 58.6lbs
FeaturesJunior cylinder with without exhaust valve
Power Packsilencer, carburetor, fuel pump, engine, exhaust system, radiator, battery, battery box, cable harness, start button, ON/OFF switch

Rotax 125 Max - Senior - Specs

Age Range15+ Years
Race ClassNational/International
Maximum Performance21 kW / 28.5hp at 11500 rpm
Maximum Torque21 Nm at 8750 RPM
WeightBare Engine: 12.00kg / 26.5lbs
With Power Pack: 23.6kg / 58.6lbs
FeaturesCylinder with pneumatic timed exhaust valve
Power Packsilencer, carburetor, fuel pump, engine, exhaust system, radiator, battery, battery box, cable harness, start button, ON/OFF switch