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ROTAX MAX engines
The ROTAX FR125 MAX engine range is the official engine for ROTAX MAX Challenge. It is the best choice for any kart enthusiast.
Description: ROTAX-single-cylinder | 2-stroke, reed valve engine | oil in fuel lubrication | liquid cooled with integrated water pump | digital battery ignition | pneumatic adjusted exhaust valve | balance shaft | centrifugal clutch | integrated electric starter
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ROTAX FR125
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Mini MAX
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Junior MAX
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MAX
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Bore
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54,0 mm
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Stroke
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54,5 mm
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Displacement
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124,8 cm3
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Capacity
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10 kW
at 8500 rpm
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15 kW
at 8500 rpm
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21 kW
at 8750 rpm
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Torque
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12 Nm
at 7500 rpm
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17 Nm
at 8500 rpm
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21 Nm
at 8750 rpm
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Clutch
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Dry centrifugal clutch
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Intake silencer
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Intake silencer with integrated air cleaner
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Lubrication
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Oil in fuel, high quality 2-stroke oil, mixing ratio 2%
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Intake restrictor
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Yes
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No
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No
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Pneumatic exhaust valve
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No
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No
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Yes
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Weight of engine
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Approx. 12 kg (without accessories)
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Accessory kit with
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Intake silencer, carburetor, fuel pump, exhaust system,
radiator, battery, complete cable harness, battery support
and battery charger
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Optional extras
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Rev. counter and temperature sensor
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ROTAX 125 MAX DD2 (Direct Drive 2 Speed)
Description: ROTAX-single-cylinder, two-stroke, reed valve engine | oil-in fuel lubrication | liquid cooled with integrated water pump, integrated thermostat | pneumatic exhaust valve (RAVE) | digital battery ignition | balance shaft | integrated electric starter | centrifugal clutch in oil bath | overload clutch | quick exchangeable primary drive | two speed gearbox | ESA - electronic shifting assistance | RER - ROTAX electronic reverse | battery charger
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Power-pack
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ROTAX 125 MAX DD2
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Bore
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54,0 mm
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Stroke
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54,5 mm
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Displacement
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124,8 cm3
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Capacity
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24 kW at 11750 rpm
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Torque
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20 Nm at 10500 rpm
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max rpm
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13.600 rpm (electronically rev. limiter)
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Carburetor
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DELL’ORTO VHSB 34
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Fuel pump
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PAIOLI diaphragm pump
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Intake silencer
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Tuned intake silencer system with integrated air filter
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Exhaust system
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Tuned exhaust pipe with after muffler
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Gear box
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2 speed, primary drive 35:62, secondary drive 19:81 (1st gear) and 24:77 (2nd gear)
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Lubrication
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Oil in fuel, high quality 2-stroke oil, mixing ratio 2%
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Weight of engine only
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Approx. 17,5 kg (without accessories)
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Weight of complete power-pack
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Approx. 27 kg including engine with oil and coolant, intake silencer, carburetor, fuel pump, exhaust system, radiator, battery, battery box, battery cover, cable harness, ON/OFF switch, RER-module, shifter paddle with hub and bowden cable
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Rotax
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