912 iS SPORT

912 iS/iSc SPORT (100 HP)

Based on the proven concept of the Rotax 912 S/ ULS engine the new 912 iS Sport engine offers all well known advantages of the Rotax 4-stroke engine series complemented by additional features, for example, the engine management system.

The complete package presents the latest technology in the aircraft engine industry and will enhance the flying and ownership experience of pilots.

The Rotax 912 iS Sport engine offers a TBO (time between overhauls) of 2,000 hrs.     DOWNLOAD DATA SHEET



  • 4-cylinder
  • 4-stroke liquid-/air-cooled engine with opposed cylinders
  • Dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappets
  • Redundant electronic fuel injection
  • Engine management system
  • Electric starter
  • Propeller speed reduction unit
  • Air intake system





  kW hp 1/min Nm ft. lb. 1/min 1/min
912 iS1 / iSc2 Sport 73.5 100 5800 121 89 5800 5800
  72.0** 98 5500 125 92 5500  
  68.0 92.5 5000 132*** 97 5000  
*Limited for max. 5 min.           **Max. continuous power at 5500 1/min       ***MOGAS, no hydraulic governor





84.0 mm 3.31 in 61 mm 2.4 in 1352 cm³ 82.6 min.MON 85 RON 95*
min. AKI 91*
* leaded, unleaded, AVGAS 100LL or E10




Engine with propeller speed reduction unit. i = 2.43 with overload clutch 63.6 140.2
Exhaust system 4.8 9.5
Air guide hood 0.4 0.8
External alternator 3.0 6.6
Fuel pumps assy 1.6 3.5
Engine mount 2.0 4.4
1) iS = non-certified         2) iSc = certified acc. to CS-E; available after receipt of type certificate


The new Rotax 912 iS Sport aircraft engine is a further improvement of the fuel injected Rotax 912 engine series BRP launched in 2012. BRP’s engine of the future, the Rotax 912 iS Sport engine, follows Rotax’ aircraft engine’s core values: outstanding performance combined with low fuel consumption.

The user will appreciate the improved take-off-performance which results in a better climb rate and a shorter take-off-run. These characteristics combined with higher cruise speed make the pilot’s heart beat faster.



Owners of the Rotax 912 iS Sport aircraft engine will benefit from reduced fuel consumption, lower operating costs and fewer emissions.

The Rotax 912 iS Sport engine automatically improves its fuel efficiency by switching to a lean ECO mode once the throttle is pulled back to a throttle setting below 97% after start and climb phases.


1) BRP-Powertrain test with fixed pitch propeller, same aircraft, third party validated.


The change from a carburetor system to a modern injection system, in combination with a digital engine control unit (ECU) results in the most advanced combustion engine concept available for the light aviation market.

Easier operation and a state-of-the-art engine management system make the Rotax 912 iS Sport engine ideal for all kinds of modern and innovative light airplanes.

Pilots will also appreciate the easier pre-flight check and starting procedures offering them enhanced flight experience. Removing the need for servicing and synchronizing the carburetors every 200 hours and the elimination of the carburetor icing are major benefits for the user and offer improved safety for pilots.

Based on the ECU the relevant engine parameters can be displayed on a digital instrument board. An electronic diagnostic system gives insight in the engine management and enables mechanics to make fast engine checks. The electrical power output of the engine was raised to 430 watt to provide for all modern avionics.

Based on 25 years of field experience of the well known Rotax 912 engine, BRP’s experts were able to develop and to produce the modern Rotax 912 iS Sport engine to fulfill its customer’s needs.



2) Based on cruise power setting at 5,000 rpm at 5,000 ft MSL and comparable fuel consumption according to the following sources (Feb. 2012):,,, costs of fuel: MOGAS EUR 1.60 / liter and AVGAS EUR 2.408 / liter - airport Wels, February 1, 2012

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