The Ultimate 10-300, designed in the mid-1980s and flown in the 1988 World Aerobatic Championships by aerobatic legend Gordon Price, quickly became one of the most recognizable and respected biplanes in aviation history. Its bold design, compact proportions, and unmatched agility set a new standard for high-performance aerobatic aircraft—inspiring both full-scale and R/C pilots around the world.
Building on the success of the Ultimate 70cc, World Champion Quique Somenzini has taken everything that made the 70cc extraordinary and elevated it to a breathtaking new scale. The Ultimate 120cc brings the spirit of Gordon Price’s original design into a new era—combining the unmistakable presence of the Ultimate 10-300 with modern aerodynamics, advanced construction, and unmatched convenience.
The Ultimate 120cc features Flex Innovations’ proprietary Speed-Lock system on the top and bottom wings, stabilizers, and canopy—allowing for quick, screw-free assembly without the need for tools. Whether you’re assembling at the field or preparing for transport, Speed-Locks make setup effortless, secure, and precise. Constructed from the top down to withstand extreme G loads, the Ultimate 120cc is constructed with carbon fiber and laminated plywood that makes the airframe extremely lightweight yet rigid. On top of the modern construction, the Ultimate 120cc features bold Clint Sweet Designs color scheme providing the Ultimate 120cc with standout presence.
The Ultimate 120cc embodies the essence of Flex Innovations — authentic scale looks, modern innovation, and Quique Somenzini’s visionary design unite for the ultimate expression of Power, Precision, and the Purity of Flight

Top-Wing Speed Lock

Bottom-Wing Speed Locks

Canopy Speed Locks

Horizontal Stab Speed Locks

Canister / Tuned-pipe Access Hatch

Fiberglass Engine Baffles

Fiberglass Landing Gear Fairings

MPX Connector Ready Airframe
FEATURES:
- 3D and F3A World Champion Quique Somenzini design
- 3D, Precision, andXA (eXtreme Aerobatic) performance with minimized control coupling while maintaining scale appearance
- Speed-Locks on Top and Bottom Wings, Horizontal Stab, and Canopy
- Plug in upper and lower wings with pinned inter-plane struts for easy storage and transportation
- Removable horizontal stabilizers with speed-locks and elevator servos mounted in each stab for easy storage and transportation
- Main Hatch and Auxiliary Forward hatch (under the top wing) require no tools for easy removal and installation
- Massive control surfaces for extreme 3D and XA performance
- Canister ready and mount supplied
- Laminated carbon fiber, fiberglass, plywood and balsa structure keeps the model lightweight, yet incredibly strong.
- Quick to assemble! Aileron and elevator hinging as well as gap sealing is completed by the factory
- Wide Two-piece cowling offers plenty of room for popular 120cc class engines
- Low-pressure lip molded into the bottom of the cowling aids in engine cooling
- Painted Carbon fiber landing gear keeps the airframe lightweight
- Fiberglass landing gear wheel fairings
- Removable rudder with a single wire through the hinges saves space for transportation
- Carbon fiber wing, stab, and anti-rotation tubes
- Square carbon-fiber tube bracing increases fuselage torsional rigidity
- Accepts many popular 100-125cc gas engines like the Desert Aircraft DA 120 and GP 123
- Painted Custom G10 Control Horns for Optimized Throw and Precision
- Lightweight “soda bottle” style fuel tank included
- Professionally painted fiberglass wheel pants, canopy and cowling
- Genuine German Engineered and manufactured Oracover (Ultracote) offers perfect finish, longevity, UV tolerance.
- Distinctive, Cllint Sweet Designs factory-applied trim scheme
Yellow Trim Scheme Colors
| ORACOVER® | ULTRACOTE® |
|---|---|
| 21-033 Cadmium Yellow | HANU872 Bright Yellow |
| 21-023 Ferrari Red | HANU889 True Red |
| 21 Bright Red | HANU883 Flame Red |
| 12-071 Black | HANU884 Black |
Blue Trim Scheme Colors
| ORACOVER® | ULTRACOTE® |
|---|---|
| 21-060 Orange | HANU877 Orange |
| 21-053 Sky Blue | HANU875 Sky Blue |
| 21-050 Blue | HANU873 Deep Blue |
| 21-010 White | HANU870 White |
| 21-071 Black | HANU874 Black |





















