912 iS Sport | iSC Sport

Rotax 912 iS / iSC Sport Aircraft Engine

The Rotax 912 iS / iSC Sport is a perfected four-stroke piston engine designed for modern light and sport aircraft, delivering full take-off power with exceptional reliability and efficiency. Equipped with a redundant electronic fuel injection and ignition system, an advanced Engine Management System (EMS), and a propeller speed reduction gearbox, this engine ensures smooth, safe, and high-performance operation across a wide range of flight conditions.

With dry sump forced lubrication, liquid- and air-cooled cylinders, and automatic adjustment via hydraulic valve tappets, the 912 iS Sport offers long-term durability and a 2,000-hour TBO. A customizable version is available, allowing the engine to be delivered with neutral black covers and no logo branding, ready for individual design.

Applications and Uses

• Light sport aircraft (LSA)

• Experimental and kit-built aircraft

• Touring and cross-country aircraft

• Recreational aviation and training

• Customizable for branded or bespoke installations

Features and Benefits

• Perfected four-stroke piston engine with full take-off power

• TBO 2,000 hrs for reduced maintenance costs

• Four liquid- and air-cooled cylinders for efficient thermal management

• Redundant electronic fuel injection and ignition with eco mode

• Advanced Engine Management System (EMS) for optimized performance

• Propeller speed reduction gearbox

• Dry sump forced lubrication with separate oil tank

• Automatic adjustment via hydraulic valve tappets

• Electric starter for reliable operation

• Integrated air intake system

• Customizable covers for branding or personal design

Performance

• Maximum Power: 73.5 kW (100 hp) at 5800 rpm

• Maximum Continuous Power: 72.0 kW (98 hp) at 5500 rpm

• Optional MOGAS Power: 68.0 kW (92.5 hp) at 5000 rpm

• Torque:

  • 121 Nm (89 ft-lb) at 5800 rpm

  • 125 Nm (92 ft-lb) at 5500 rpm

  • 132 Nm (97 ft-lb) at 5000 rpm (MOGAS, no hydraulic governor)

Engine Data

• Displacement: 1352 cm³ (82.6 cu in)

• Bore: 84.0 mm (3.31 in)

• Stroke: 61.0 mm (2.4 in)

• Maximum RPM: 5800 rpm

Weights

• Engine with propeller speed reduction gearbox (i = 2.43) with overload clutch: 63.6 kg (140.2 lb)

• Exhaust system: 4.8 kg (10.5 lb)

• Engine suspension frame: 2.0 kg (4.4 lb)

• External alternator: 3.0 kg (6.6 lb)

• Air guide hood: 0.4 kg (0.8 lb)

• Fuel pumps assembly: 1.6 kg (3.5 lb)

Fuel

• Minimum MON 85 / RON 95 / AKI 91

• Compatible with leaded and unleaded fuels, AVGAS 100LL, and Ethanol up to 10%

Health and Safety

Designed for long-term reliability, safety, and high efficiency, with redundant systems to reduce operational risk and improve performance in diverse flight conditions.

Limitations

Engine performance may vary depending on ambient conditions, temperature, and altitude. Images are for illustrative purposes only. Installation must comply with Rotax guidelines and applicable aviation regulations.