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Experimental kit aircraft
Go further.
Build your own.
The Whisper X350G2 combines carbon-composite construction, cross-country performance and a builder-focused kit in one distinctive two-seat aircraft.
FromUS$87,000Kit price · Contact us for a detailed quotation
Meet the X350G2
Purposeful performance. Built around the pilot.
Fast enough to cover serious distance, efficient enough for extended touring, and spacious enough to make the journey comfortable. The X350G2 is designed for pilots who want their aircraft to be as individual as the mission.
Its carbon-composite structure, clean aerodynamics and wide cockpit are paired with a kit developed to reduce unnecessary complexity while preserving the builder’s meaningful involvement.
01 / Airframe
Carbon where it counts.
A smooth composite airframe and carbon wing structure create a strong, corrosion-resistant platform with the clean lines that define the Whisper.
Key specifications
Numbers that make the distance feel smaller.
Target X350G2 figures. Final performance and empty weight depend on engine, propeller, avionics, finish and individual build.
Configuration
- Seats
- 2
- Construction
- Carbon composite
- Engine options
- Superior IO-360 / Lycoming IO-360
- Landing gear
- Tricycle / Taildragger
- Typical build time
- 500–850 hours
- Kit price
- From US$87,000
Dimensions & loading
- Overall length
- 6.30 m / 22 ft 6 in
- Overall height
- 1.90 m / 6 ft 2 in
- Wingspan
- 8.00 m / 26 ft 2 in
- Internal cabin width
- 1,200 mm / 47.2 in
- Maximum take-off weight
- 970 kg / 2,138 lb
- Typical empty weight
- ±630 kg / 1,389 lb
- Typical useful load
- ±340 kg / 750 lb
- Structural limit load
- +6g / −4g
Engine & fuel
- Engine options
- Superior IO-360 / Lycoming IO-360
- Configuration
- 4-cylinder, horizontally opposed
- Displacement
- Approximately 360 cu in / 5.9 L
- Rated power
- 180 hp class
- Engine mounting
- Dynafocal / conical, configuration dependent
- Propeller
- Ground-adjustable or constant-speed options
- Fuel capacity
- 200 L / 52.8 US gal
- Typical economy consumption
- Approximately 32 L/h / 8.5 US gph
- Fuel type
- AVGAS, subject to engine approval
Indicative flight performance
- VNE
- 189 kt / 350 km/h
- Target cruise speed
- 176 kt / 326 km/h
- Economy cruise
- Approximately 155 kt / 287 km/h
- Stall speed
- Approximately 52 kt / 96 km/h
- Take-off ground roll
- Approximately 192 m / 630 ft
- Landing distance
- Approximately 200 m / 656 ft
- Rate of climb
- Up to 1,540 ft/min / 7.8 m/s
- Endurance
- Approximately 6 hours
- Seats
- 2
Dimensions are nominal. Performance figures are indicative and depend on aircraft weight, engine, propeller, build quality, atmospheric conditions and pilot technique. Each completed experimental aircraft requires its own weighing and flight-test programme.
Technical overview
Modern systems in a proven composite platform.
The X350G2 allows each builder to select the engine, propeller and avionics package that best matches the intended mission, operating environment and regulatory requirements.
Carbon-composite airframe
The moulded composite structure produces a smooth aerodynamic surface with high stiffness and corrosion resistance.
180 hp class engine options
The airframe is configured around the Superior IO-360 or Lycoming IO-360 family. Installation details, cooling and fuel-system requirements are matched to the selected powerplant.
200 litre capacity
Integral wing fuel capacity supports long cross-country operation. Final usable fuel, endurance and loading remain dependent on the individual build and operating configuration.
Builder-selected avionics
The wide cockpit supports modern glass-panel installations, engine monitoring, navigation and optional two-axis autopilot systems selected by the builder.
Two gear configurations
Choose tricycle gear for familiar ground handling or a taildragger configuration to suit personal preference and intended operation.
Individual aircraft, individual weight
Empty weight and performance vary with engine, propeller, avionics, interior and finish. Each completed aircraft must be weighed, inspected and flight tested.
Builder-focused500–850Typical build hours
The build process
A serious project, made understandable.
The X350G2 kit is designed to give builders meaningful involvement without starting from raw materials. Major structures arrive substantially completed, with support available throughout.
Choose your configuration
Select tricycle or taildragger gear, engine, propeller, avionics and the level of factory support that suits your project.
Receive a highly developed kit
Major composite structures and large surfaces arrive substantially completed, helping you focus on careful systems installation and finishing.
Build with factory support
Clear build information and direct support from the team behind the X350G2 help keep your project moving.
Inspect, test and fly
The builder remains responsible for regulatory compliance, final inspection, airworthiness and the flight-test programme.
Design & support
Built to be used. Supported by the people who make it.
From configuration advice through the build and beyond, Whisper Aircraft provides practical support for each individual project.
- 01Carbon-composite airframe
- 02Wide two-seat cockpit
- 03Generous baggage space
- 04Tricycle or taildragger configuration
- 05Superior IO-360 or Lycoming IO-360 options
- 06Designed for long cross-country missions
- 07Experimental kit with factory support
Factory & build assist
Building the Whisper experience.
A closer look at supported aircraft projects, workshop activities and completed Whisper aircraft.
Start the conversation
Ready to build your X350G2?
Tell us where you are based and how you intend to configure your aircraft. We will prepare a quotation and help you plan the next step.
Emailsales@whisperaircraft.com
Telephone+27 83 409 4814
Mobile+27 83 301 0463
Hangar D5 · Mossel Bay Airport
Western Cape · South Africa
Request information
Tell us about your X350G2 project.
Complete the form and the information will be sent to sales@whisperaircraft.com. We will contact you to discuss configuration, availability and a detailed quotation.