Thunderbolt Engine

Thunderbolt Engines are Lycoming's brand of high performance, built-to-order power plants for Experimental aircraft.  With Thunderbolt Engines, customers get a genuine Lycoming engine that is factory built, factory tested and factory supported - with your choice of fuel systems, ignition systems, performance enhancements and finishing options. These performance options come with every Lycoming Thunderbolt Engine:


  • Balanced crankshafts
  • Connecting rods, pistons & pins all within 1/2 gram
  • Handcrafted, high-performance piston engines
  • Customized to match personal style and taste


Thunderbolt Engine Builder

Designed to optimize your flying experience.

From the home builder to the aerobatic pilot, the Thunderbolt engine line accommodates varying degrees of performance. Choose from the Signature, Extreme or Competition Series to begin building your custom piston aircraft engine.

Personal attention to detail in every engine.

Built one-at-a-time by a dedicated team, each Thunderbolt engine differs from the next. These customizable aircraft engines receive unrivaled craftsmanship from start-to-finish in our Advanced Technology Center.

Speak with our sales team to order your custom-built Thunderbolt engine.

Michael Goulian

A top-ranked and award-winning aerobatic pilot, Michael Goulian chooses Lycoming to power his aircraft. Watch Goulian perform in the upcoming Red Bull Air Race, and meet him at Oshkosh.