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Engine Options:

Sonex Aircraft, LLC approves several different engines for its airframes, and offers firewall-forward support for those engine options, ranging from engine mounts and cowlings, to complete installation manuals.

AeroVee | Jabiru/CAMit | UL Power | Rotax 912

AeroVee Engines

The AeroVee is a complete VW Conversion Engine Kit Package offered in 80 hp and turbocharged 100 hp versions, by AeroConversions, a product line of Sonex Aircraft, LLC.

The AeroVee Engine Kit continues the Sonex Aircraft tradition of simple, elegant design. A 2180 cc Aero-Engine that can be run on 100LL or Auto Fuel, all of the supplied components are brand-new, zero-time parts.

The AeroVee comes as a complete kit that you can assemble yourself in approximately 12 hours, with the aid of an AeroVee Assembly and Installation Manual and an instructional DVD, along with free Phone/Email Technical Support. The AeroVee DVD is available for purchase separate from the engine kit for those that wish to preview the project.

The AeroVee engine kit also includes the AeroConversions AeroInjector.

AeroVee 2.1 80hp: $7,495

PDF Order Form

Read More about the AeroVee

AeroVee Turbo 100hp: $10,995 

PDF Order Form

Read More about the AeroVee Turbo




For More detailed information about the AeroVee, visit

Download: AeroVee Assembly and Installation Manual

Popular AeroVee Engine Options
2-into-1 Stainless Exhaust AeroVee Fence Baffle Laser-Cut Baffle Kit
Crankshaft/Prop Hub Assembly Service AeroConversions Oil Separator
Machined Oil Breather Plate
(allows for installation of an oil separator oil return line)
AeroConversions Throttle Quadrants
Air Filter Assembly Oil Temperature Sender (VDO)
AeroConversions CHT Probes
Oil Pressure Sender (VDO)
Laser-Cut AeroVee Exhaust Flanges
(for non-Sonex Aircraft installations only)
Integrated Spinner / Crushplate
Crushplate Only
(for non-Sonex Aircraft installations only)
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Jabiru and CAMit Aero Engines

Sonex Aircraft has learned on October 10, 2016 that CAMit Aero Engines has closed its doors. At the current time, we are still offering engine mounts for CAMit/Jabiru 3300 engines, and our Sonex/Jabiru Cooling Baffle Kit and Installation Guide are still available from our AeroConversions product line.

Jabiru Engines may be ordered directly from Jabiru North America


Popular CAMit/Jabiru Engine Options
AeroConversions AeroInjector AeroConversions Throttle Quadrants
Air Filter Assembly AeroConversions Jabiru Shock Mounts:
(replaces softer standard Jabiru shock mounts)
AeroConversions Oil Separator Integrated Spinner / Crushplate
Jabiru Universal Baffle Kit & Sonex/Jabiru Installation Guide

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AeroVee | Jabiru/CAMit | UL Power | Rotax 912
UL Power Aero Engines

ULPower Engines have been developed specifically for use in light aircraft and are manufactured to the highest standards with fully electronic ignition and multi-point fuel injection (FADEC) system as standard equipment.

ULPower Engines feature dual electronic ignition (with variable timing), excellent power-to-weight ratio, and high fuel efficiency in a conventional configuration: Air-cooled, direct drive, horizontally opposed 4-cylinder.

All ULPower engines fly on avgas and mogas — even with mixtures up to 15% ethanol — and can be upgraded with back-up and safety systems.

Sonex Aircraft provides UL Power 260 and 350-series engine mount options for the new Sonex and Waiex B-Models, and B-Model cowlings have been designed to accomodate UL Power 4-cylinder engines using UL Power's 110mm prop hub.

UL Power North America has 3rd party support available for UL Power engine mounts to fit Legacy Sonex, Waiex and Xenos airframes and for Onex airframes. The Jabiru 2200 engine mount offered by Sonex Aircraft will fit UL260-series engines.

UL Power 260 and 350-series engines may be purchased from Sonex Aircraft, and technical support is offered by UL Power North America.

*Note: All published prices subject to change with the USD to Euro exhange rate.



UL260i 97hp: $21,000*

PDF Order Form

Read More about the UL260i


UL260iS 107hp: $23,000*

PDF Order Form

Read More about the UL260iS






UL350i 118hp: $25,000*

PDF Order Form

Read More about the UL350i



UL350iS 130hp: $26,000*

PDF Order Form

Read More about the UL350iS

Popular UL Power Engine Options
AeroConversions Oil Separator AeroConversions Throttle Quadrants
Integrated Spinner / Crushplate

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AeroVee | Jabiru/CAMit | UL Power | Rotax 912
Rotax 912-Series Engines

Rotax 912-series engines have become popular with some Sonex builders, particularly in international markets such as Europe and South America, and several customers have successfully made their own Sonex installations.

Although we do not sell Rotax engines, Sonex Aircraft provides Rotax 912-series engine mount options for the new Sonex and Waiex B-Models, and B-Model cowlings have been designed to accomodate Rotax engines. Sonex does not provide specific installation techical support for Rotax engines as there are many existing Rotax installation support sources already available.


Popular Rotax Engine Options
AeroConversions AeroInjector
(Allows Aerobatics with the Rotax!)
AeroConversions Throttle Quadrants
Air Filter Assembly Integrated Spinner / Crushplate
AeroConversions Oil Separator

See More Great Products and Accessories at

A note about alternative engine choices: Although there may be other viable engine choices for Sonex Aircraft, LLC airframes, only approved engine installations have been engineered for proper weight and balance and power loading. Specific firewall-forward installation support is only offered for engines installed and tested by Sonex Aircraft, LLC. When installed according to Sonex-provided documentation, the user of an approved engine can anticipate a trouble-free installation proven by thousands of flight hours, as well as full customer support and on-going serviceabilty.

Customers should not underestimate the vast amounts of time, money, and effort that go into alternative engine development and installation. Any customer choosing to use an unsupported engine installations are true "experimenters". Sonex Aircraft, LLC will not offer firewall-forward technical support for unapproved engine installations. Your choice of an alternative engine may also result in insurability problems. As a potential builder, you must educate yourself on the true impact of your engine choice before embarking on an alternative engine installation. The list of issues that should be considered include but are not limited to: Installation support (cowl, engine mount, cooling), installed weight, reliability, serviceability, impact on flight qualities and useful load of airframe, and availability/cost of insurance. Sonex Aircraft engine installations must not exceed 200 lbs total weight forward of the firewall. Any builder considering use of a heavier installation should take notice of the important information contained in our Gross Weight Advisory (LSA Compliance and Safety) Letter.

Sonex staff have been involved in the aircraft and engine business for over 40 years and we are constantly watching the engine market for emerging products. If a new, viable powerplant emerges which fits our needs and philosophy it will be offered only after it has been thoroughly tested on factory aircraft. If you have any questions about your engine choice, please feel free to contact us.


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