Technical information

3 - 2 - 1 BUILD !



The New Whisper X350 Gen II is available in several options, Basic Kit, Standard Quick-Build-Kit and Ready-to-Fly.


Ranging from  +-600hrs, 400hrs to 16 hrs  build time.


The standard kit can be purchased in sections to suite your time schedule, budget and space. Each section has its own quick build option allowing you to save some construction time.


The kit has been designed should you like to purchase it sectionally to have the fuselage completed first, this means within a couple weeks you'll have a fuselage ready for interior mock-up and engine installation.


Alternatively you can purchase the Empennage Kit and complete it first, we offer the X350 Gen II kit in a wide range of configurations making it perfect for a first time build.


We are proud of the fact that our customers will have very little fiberglass work to do, depending on the kit you select. However, there is some to be done.


The Whisper X350 Gen II Kit includes all items and hardware required to complete a standard kit, this includes all control assemblies and Grove wheels and brakes.


The X350 Gen II uses AN hardware throughout the aircraft ensuring easy availability of parts.


Our factory carries all replacement parts in stock to minimize any delays in receiving  parts.


The X350 kit can be completed in +-400 hrs depending on your current skill set, when you receive your kit all structural parts and large surfaces will be completed, the kit ships with a base coat already sprayed to insure product quality and ultimately the finished aircrafts quality. The kit ships with complete built Wings, Horizontal Stab, Rudder, Flaps, Ailerons, Elevators and Fuselage. Within a couple days your aircraft will be ready for motor installation.


Photo by Patrick Davidson, Red Bull Air Race Pilot.


"The X350 Gen II is one of those kit aircraft that makes you grin every time you take to the sky.

To say the performance is spectacular would be an understatement indeed!

It's one of those unique and rare aircraft that does everything well "

The X350 Gen II offers increased performance and headroom, a full leather interior, dual L&R Controls,  optional Ballistic Recovery System,  optional 2-Axis Autopilot and a more spacious instrument panel to accommodate 10.4 inch EFIS screens to name a few.


The New Whisper X350 Gen II is available in 3 options, Basic Kit, Standard Quick-Build-Kit and Ready-to-Fly.


We are proud of the fact that our customers will have very little fiberglass work to do, depending on the kit you select. However, there is some to be done.


The Gen II Standard Kit  have some structural and fuselage parts  completed, including the first paint primer coat and most of the exterior work.


The remaining work and finishings includes all electronics, engine fitments and interior work to be done by the owner. No prior knowledge of composites is required or necessary.

Internally, you'll notice a full leather  interior with 4D Carbon Fiber trims and textured Kydex avionics panels. The Kydex is a durable, easy to work with panel, ensuring an easy avionics installation. We import our leather from Italy to ensure quality and durability, as well as comfortability for those long, cross country trips.


The Gen II have one of the widest cockpits available allowing plenty elbow room and leg room making it perfect for cross-country trips.


All parts required to finish the Whisper are included within the kit.  The estimated time to complete the kit will take an average of 500 man hours , depending on your skills or assistance from friends or others.**

A well-detailed construction manual (featuring ample illustrative photographs) is provided with the kit. Quick assistance can also be given by phone  or  via SKYPE call. Whisper Aircraft have a growing builders forum too, where owners can share their construction experience and knowledge.*


*All current build forum aircraft are 1st Generation Whisper Aircraft. 1st Gen X350's is 10% completed kits.

**Engine, engine mount and avionics are excluded in the standard kit, however  they can be supplied.

Whisper Aircraft Logo


* Final performance may vary slightly


The X350 Gen II is the pilot’s plane. It expresses the pilot’s bold statement and style. The exterior paint style and color scheme will be your most important stylistic decision.


It will also be the reason for envy both inside and out of the hangar.




X350 Gen II is Personalized to Suit Your Taste



A Optional full-leather interior, generously crafted seats (with perforated accents), leather on the instrument panel and the inner lining of the doors, as well as black leather trims, is an elegant and sporty result; which fits perfectly into the overall concept of the X350 Gen II.

Loading Whisper Aircraft...






Engine Mount

Gear Configuration

G Loading




Overall Length



Width (interior front)




Gross Weight

Empty Weight

Useful Load

Max Fuel Load

Useful Load Full Fuel


Lycoming / Superior / UL Power

160 hp / 180 hp / 200 hp

Dynafocal / Conical

Tail Wheel / Nose Wheel

+ 6.0, - 4.0




22 ft 6 in / 6.30 m

6 ft 2 in / 1.9 m

26 ft 2 in / 8.00 m

47.2 in / 1,193 mm




2,138 lbs / 970 kg

1,213 lbs / 550 kg

926 lbs / 420 kg

388 lbs / 176 kg

538 lbs / 244kg

Coming Soon




Fuel Capacity                                     

Fuel Consumption ( 55% Cruise, typ)

Fuel Type


Projected Performance at Sea Level - 180HP


Top Speed (typ)

Cruise speed 75% Power  (typ)

Cruise speed 55% Power (typ)

Stall Speed

Take Off Ground Roll

Landing Distance

Rate of Climb

Max Operating Altitude

Range (Incl. Reserve, Taxi, Takeoff )

Endurance (Incl. Reserve, Taxi, Takeoff )




Tri-Gear Configuration                             Custom Leather Interior

Quick-build Option                                    Additional Fuel Tanks

Ballistic Recovery System                       Tinted Canopy

Dual Center Stick Controls                      Leading Edge Landing Lights




63 USG / 240 liters

8.5 USG/hr / 32.17 liters/hr





184 kts / 211 mph / 340 km/h

175 kts / 201 mph / 323 km/h

155 kts / 178 mph / 287 km/h

52 kts / 60 mph / 96 km/h

984ft / 300m

984ft /300m

1,540 ft/min / 7.82 m/s

25,500 ft / 6,858 m

1001 NM / 1,854 km

6:46 Hours





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