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Panther Videos

Photo Courtesy of Ed Hicks

Panther Specs

Photo Courtesy of Ed Hicks

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Latest News Updates

Photo Courtesy of Ed Hicks

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Panther Pricing

Photo Courtesy of Ed Hicks

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OSH 2016 - Steve Pedano's Panther

Photo Courtesy of Ed Hicks

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The Panther is a single seat, low wing, experimental kit aircraft offered by SPA. It features a large cockpit, folding wings and a myriad of features and options for the homebuilder.


SPA offers components for Corvair flight engines. The 5th Bearing offered by SPA is the gold standard for any Corvair flight engine. We also offer a billet crankshaft and a rear alternator option. Click …


The Cleanex is a Sonex/Waiex/Xenos powered by a Corvair flight engine. SPA designed the conversion parts for this configuration and information can be found here.

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Closed for Memorial Day

Our offices will be closed Monday, May 29th, 2023 in honor of Memorial Day. This nation will remain the land of the free only so

Jon Farley’s Panther Sport

Check out these amazing photos of Jon Farley’s Panther!  His Panther is powered by a Lycoming O-320 and a new electric constant-speed propeller by AX

Wayne Richmond’s Panther SN040

Wayne Richmond lives in New Zealand and has been flying his Panther SN040 since January.  He sent this note over (it has been long overdue

Spam Issue Resolved

Our website hosting provider recently had an issue with a hacker that trickled down to our site. Because of a vulnerability in the code we