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Technical information

3 - 2 - 1 BUILD !



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


Ranging from  +-800hrs, 450hrs 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.


Upon collection, a fiberglass demonstration will be given to ensure you have a good grasp of how to do your fiberglass work properly and safely. This demonstration can also be done before purchasing to make sure you're comfortable with the process. All fiberglass consumables (resin and glass fiber) are included in the kit.


Take it from us, it's a skill. However, an easy and forgiving skill to master.


The X350 kit can be completed in +-450 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.



"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 electronics are excluded in the standard kit, however  they can be supplied.

Whisper Aircraft Logo



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.



Fuel Capacity

Fuel Consumption ( 55% Cruise, typ)

Fuel Type


Performance at Sea Level

Lycoming O-360 180HP, 2-Blade Whirlwind GA 200L Propeller.


Top Speed (typ)

Cruise Speed - Sport (typ 75%+ Power)

Cruise Speed - Economy  (typ 55% Power)

Stall Speed

Take Off Ground Roll

Landing Distance

Rate of Climb

Max Operating Altitude

Range (Incl. Reserve, Taxi, Takeoff)

Endurance (Incl. Reserve, Taxi, Takeoff )

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

630ft / 192m

656ft / 200m

1,540 ft/min / 7.82 m/s

25,500 ft / 6,858 m

‪1,180 miles / 1,900 km

6:46 Hours






Engine Mount

Gear Configuration

G Loading

Roll Rate


Typical Cost Including Build

Typical Build Time




Overall Length



Internal Cabin Width




Gross Weight

Empty Weight

Useful Load

-Max Fuel Load

-Useful Load Max Fuel


Lycoming / UL Power

180 hp / 200 hp / 210 hp

Dynafocal / Conical

Tail Wheel / Nose Wheel

+ 6.0, - 4.0

110 deg/sec


US$87,000 / ZAR945,000

500 hours




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


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