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 several popular options of fuel systems, ignition systems, performance enhancements and finishing options. These features come with every Lycoming Thunderbolt engine:


  • Balanced rotating system within 0.5 gram (connecting rods, pistons, piston pins)
  • Ported and polished cylinders
  • Customized paint options


Thunderbolt Engine Builder

Designed to optimize your flying experience.

From the home builder to the aerobatic pilot, customers can choose a Thunderbolt engine that accommodates their desired level 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.

Thunderbolt engines receive unrivaled craftsmanship from start-to-finish.  Lycoming engines are proudly built in our factory in Williamsport, PA.

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 an upcoming Red Bull Air Race, or meet him at the Lycoming booth at EAA AirVenture.