GE9X Engine

ge9x engine

Born of power and efficiency

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, designed to achieve 10 percent lower specific fuel consumption (SFC) compared to the GE90-115B

ge9x world record

World record holder for the highest thrust, at 134,300 pounds. 

The most advanced technologies and materials

Innovation is in our DNA. Like every engine that we have ever built, new technologies and materials incorporated into the design are key to delivering the world-class reliability, efficiency, and performance GE engines are renowned for

This blend of evolutionary and revolutionary designs enables the GE9X to be the most fuel-efficient jet engine GE has ever produced on a per-pounds-of-thrust basis. The GE9X powering the 777X airplane family:

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

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

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

Fewer fan blades provide greater efficiency

Reduced fan blade thickness improves aerodynamic efficiency, while its lower fan radius ratio maximizes air flow and minimizes drag. Combined with fewer fan blades than its commercial counterparts, GE9X boasts the most efficient fan to increase performance and decrease fuel burn.

  • CF6 – 38 blades
  • GE90 – 22 blades
  • GEnx – 18 blades
  • GE9X – 16 blades
ge9x greater efficiency

Ceramic Matrix Composites (CMC) provide greater durability

GE9X incorporates more than 65 CMC components, the most of any commercial aircraft engine to date. These CMC components weigh a third of conventional parts yet are twice as strong for greater durability.

  • 1/3 weight
  • 2X strength
  • 59% less cooling air required
ge9x greater durability

Additive manufacturing enables fewer parts for reduced weight

Leveraging additive manufacturing, GE9X combined more than 300 engine parts into just seven 3D printed components, resulting in less weight. Additive manufacturing also provides GE engineers with more creative freedom, fundamentally changing the design approach by allowing for more complex component design.

  • From 300 parts to 7 parts
ge9x reduced weight
ge9x environment in mind

Engineered with the environment in mind

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

50% lower emissions

All emission values equal or exceed current regulatory requirements and are expected to remain well below the requirement for many years to come.

Lowest NOx

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

Tested for years. Confidence from day one.

The GE9X has had the most extensive technology maturation program in the history of GE Aerospace to ensure world-class reliability and performance at service entry. Prior to installation, components undergo rigorous testing at specialized facilities around the globe.

" It takes the world’s best talent in jet propulsion to create a game-changing product like the GE9X engine. 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."

John Slattery, Executive Vice President and Chief Commercial Officer, GE Aerospace

FAA Certification awarded September 25, 2020

ge9x quote

It’s all in the numbers

Fan Blades

Fan diameter (in)

Thrust rating (lb)

Additive parts

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