ROTAX ENG 125 MICRO MAX EVO

Description

The Rotax 125 Micro MAX EVO MY20 is the first engine of the Rotax MAX EVO ladder: a single-speed, electric-start package for young drivers aged about 8 to 11 who are starting kart racing, with power deliberately kept at 9.5 hp. Like the whole 125 MAX series it is CIK-FIA approved, and it is supplied in the UAE by an authorised Rotax dealer in Dubai.

Key specifications

• Class: Micro MAX, the entry level of the Rotax MAX EVO range; Rotax lists it for leisure, club, national or international racing
• Driver age: 8 to 11 years (Rotax guideline; age limits can vary with national regulations)
• Maximum power: 7 kW / 9.5 hp at 7,000 rpm (ISO 15550 / ISO 4106)
• Maximum torque: 10.8 Nm at 6,000 rpm (Rotax 2021 datasheet)
• Engine: 125 cm³ single-cylinder two-stroke, reed-valve controlled inlet, mixture lubrication (oil pre-mixed with fuel)
• Cylinder: junior cylinder without exhaust valve, with inlet restrictor and restricted exhaust socket
• Cooling: liquid; water pump driven by the clutch shaft, thermostat in the cylinder-head cover opening at 45 °C
• Carburettor: Dell’Orto VHSB 34, slide type with float chamber; fuel pump driven by crankcase pulses, with inline fuel filter
• Ignition: ECU-controlled, timing calculated from an engine speed sensor; no manual adjustment required or possible
• Starter: electric, relay-switched, with automatic START-to-ON reset
• Clutch: centrifugal, running in an oil bath; disengaged below 2,500 rpm, fully engaged at approx. 4,000 rpm
• Balance shaft rotating counter to the crankshaft to reduce vibration
• Exhaust: tuned resonance system with after-muffler; intake silencer with multi-layer air filter
• Electrics: 12 V battery; Rotax quotes about 100 starts or 5 hours of running from a fully charged 12 V 6.5 Ah battery
• Weight: bare engine 11.8 kg (26.0 lb); complete power pack 21.5 kg (47.5 lb)

Compatibility

• Chassis: 950 mm wheelbase (cadet/mini chassis); radiator and exhaust are shaped to fit cadet chassis
• Next step in the Rotax Evolution concept: 125 Mini MAX EVO

In the box

• Engine
• Intake silencer with air filter
• Carburettor and fuel pump
• Exhaust system
• Radiator
• Battery box with cover
• Cable harness
• OFF/ON/START switch and relay

Contents of the Rotax complete power pack. The battery is not listed in the Rotax power pack.

Genuine Rotax engine, code ROT300125137, supplied by Scuderia General Trading, authorised Rotax dealer in Dubai. In stock at our Dubai warehouse where shown; orders are dispatched the same day they are received, with DHL Express delivery across the UAE and the GCC.