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Born of power and efficiency
The largest and most powerful commercial aircraft engine ever built

The GE9X is the largest and most powerful commercial aircraft engine ever built, incorporating advanced technologies that enable more efficient, quieter flight with fewer emissions. Designed specifically for the new twin-engine Boeing 777X family, the GE9X is the most fuel-efficient engine in its class, delivering unmatched reliability and performance.

World record
Pounds of thrust

The highest thrust of any commercial jet engine — equivalent 597.396 kN

Featured news
November 17, 2022
Silk Way West Airlines signs order for GE9X, GE90 engines to power cargo fleet

Purpose built for the Boeing 777X family of aircraft

The GE9X represents a multi-generational technology development chain, supported by millions of hours of field experience. We have pulled learnings from other engines, including the GE90 and GEnx, to enable a more efficient, more reliable, quieter engine with lower emissions.

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Combined with the Boeing 777X, the GE9X delivers the best airline economics and profitability via reduced fuel consumption, emissions, and associated costs, and lowest environmental impact.

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New technology and materials keep us at the forefront

5 %
Fuel consumption improvement

Provides a 5% specific fuel consumption improvement versus any twin-aisle engine available.

10 %
Fuel consumption improvement

Delivers up to 10% specific fuel consumption improvements versus the GE90-115B engine.

Composite fan blades

Fourth-generation composite fan blades maximize airflow and minimize drag.

10 : 1
Bypass ratio

Achieves an approximate 10:1 bypass ratio plus a 60:1 overall pressure ratio and margin to stage 5 noise limits.

134-inch front fan diameter

Larger than a Boeing 737 fuselage, the GE9X fan diameter enables a higher bypass ratio for maximum efficiency.

Fewer fan blades provide greater efficiency

The GE9X has six less fan blades than the GE90 engine. This maximizes air flow and minimizes drag, contributing to the engine's fuel burn and noise emission advantages.

Ceramic Matrix Composites provide greater durability

Expanded use of epoxy resin composites verse the GE90 is used for lighter weight and improved fatigue durability.

2 X

The strength of conventional parts

59 %

less cooling air needed

  • 01.

    Fan diameter

  • 02.

    Blade distribution

  • 03.


Engineered with the environment in mind


Environmental performance

The GE9X features the same world-class reliability as the GE90-115B, with noise and NOx emissions well below anticipated regulation standards.

NO X ½

The GE9X engine produces half the NOx of any engine in its class at a level that is less than half of current requirements.

10 %

Less SFC: Annual fuel savings due to the GE9X having 10% less SFC vs GE90 is approximately 3,000 metric tons of fuel, which is roughly 9,500 metric tons of CO2 and roughly 2,060 cars removed from the road.

50 %

Lower emissions: All emission values at or below current regulatory requirements. 50% lower emissions (CO, Particulate, NOx).


Turbofan engine: Per pound of static thrust produced, the GE9X is the quietest turbofan engine GE Aerospace has ever produced, and is designed to meet current and anticipated next level of noise certification standards on the B777X Family.


There is no substitute that can achieve the combination of size, power and fuel efficiency of the GE9X. This engine will deliver unsurpassed value and reliability to our airline customers.

Tested, Validated, Certified

GE9X received FAA certification in September 2020

The GE9X has been through the most rigorous testing program of any GE commercial aircraft engine in history. The engine accumulated close to 5,000 hours and 8,000 cycles of ground testing plus 72 test flights totaling more than 400 hours on GE’s 747 Flying Test Bed.

Ice test

The GE9X during the third phase testing at our test facility in Peebles, Ohio

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GE9X: Refining and Testing the Low-Pressure Turbine


Born of power and efficiency



Fan/ Booster/ Compressor stages


High-pressure turbine


Low-pressure turbine


Length (in)


Weight (lb)


Ceramic Matrix Composites parts


Total parts


Fan speed N1 (RPM)


Core speed N2 (RPM)


Bypass ratio


Overall pressure ratio max power


Compressor pressure ratio