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Superior's XP-Series

are the #1 factory new

engines for the

Sport Aviation Market

From 150- to 215 horsepower, there’s a factory new XP-Engine for your homebuilt aircraft or helicopter

Superior’s XP-Engines give airplane and helicopter builders the widest array of factory new engine models and horsepower ranges so you can find the perfect blending of performance, reliability and value to “re-power” your current aircraft or for your next project.

Starting with a 150-horsepower XP-320 on up to the 215 horsepower XP-400, no matter which XP-Series Engine you choose, you are getting a factory fresh engine that brings you all of Superior’s industry leading design, manufacturing and performance advancements. You get an engine that runs better, smoother, and cooler than anything in its class.

Standard XP-320, XP-360 and XP-400 Engines are made with brand new, 100% FAA-approved PMA engine parts. The same parts used to build our 180-horsepower FAA-certified Vantage Engine. When you choose an XP-Engine you are truly getting factory engine quality at a homebuilt price.

For optimum flexibility and value, the XP-320 and XP-360 also have the flexibility to run on either 100LL Avgas or unleaded automotive gasoline.*

Of course, as an industry innovator, Superior has an array of non-certified parts and components that are not available on any standard factory engines. Current options include roller lifters, cold air induction sumps, electronic ignition, and performance fuel injection systems. 

Superior also stands behind the quality of every XP-Engine with the best warranty in the business.

For more information about Superior XP-Engines, please contact:

*NOTE: Superior XP-Engines are approved for 100LL Avgas per ASTM D910, 91/98 (lead optional) and motor gasoline with a minimum antiknock index (R=M/2 method of 91 per ASTM D4814 (European EN228). Use of auto fuel blended with alcohol (ethanol) is forbidden.

 *NOTE: Use of auto fuel is forbidden in the XP-400.

® XP-Engine, XP-320, XP-360 and XP-400 are Registered Trademarks of Superior Air Parts, Inc.
® Millennium Cylinder is a Registered Trademark of Superior Air Parts, Inc.
® Vantage Engine is a Registered Trademark of Superior Air Parts, Inc.

superior air Parts Search

  • Over 2,000 FAA-approved PMA parts and components available
  • Manufactured with the most advanced materials
  • Sold through a global network of dealers and distributors

superior air Millennium Cylinders

  • Advanced aluminum alloy heads
  • Computer-generated head fin design
  • Through hardened steel barrels
  • 25 month warranty

superior air Vantage Engines

  • FAA certified
  • 180-horsepower
  • Runs on Avgas or automotive gasoline*
  • Millennium Cylinders®

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