UMX Extra 300 3D BNF

UMX Extra 300 3D BNF

Key Features

  • An ultra micro that's ideal for indoor 3D flight
  • Completely built and flight ready—just bind to any DSM2™ aircraft transmitter with dual rates and expo
  • Includes a Li-Po flight battery and DC Li-Po charger
  • Small and light enough for experienced pilots to fly almost anywhere indoors


The Ultra Micro eXtreme (UMX) Extra 300 3D makes the dream of a 3D plane you can fly almost anywhere a reality. With a flying weight of barely over an ounce (just 33 grams), battery and all, it is slow and light enough to fly extreme 3D maneuvers in spaces no larger than a dining or conference room. Its ingenious laser-cut foam airframe, designed by ETOC champ Seth Arnold, makes it all possible.

The structure uses a fraction of the foam material usually used in profile planes of this type and is covered with micro-thin film. The airframe is reinforced with carbon fiber rods that keep flexing and twisting to a minimum so you can fly the most aggressive 3D maneuvers with absolute precision. Optional Side Force Generators are also included. These razor-thin pieces of foam slide onto the leading edge of the wing and enhance rudder authority in knife-edge flight. They improve tracking during precision aerobatics too.

The UMX™ Extra 300 3D BNF comes completely assembled with a punchy 8.5mm coreless brushed motor and Spektrum™ AR6400L Ultra Micro DSM2 Receiver/ESC installed. Built-in long-throw servos on the AR6400L drive the elevator and rudder while two independent Spektrum AS2000L long-throw ultra micro servos drive the ailerons. A 1S 3.7V 150mAh Li-Po battery and DC Li-Po charger are also included. For best performance, a DSM2 aircraft transmitter with dual rates and expo is recommended.

Product Specifications

Wingspan: 16.8 in (427mm)
Overall Length: 19.4 in (494mm)
Wing Area: 74 sq in (4.8 sq dm)
Flying Weight: 1.2 oz (32.5g)
Motor Size: 8.5mm Coreless Brushed
Trim Scheme Colors: Red, Grey, Clear, Black
Prop Size: 130mm x 70mm
Recommended Battery: 3.7V 1-Cell 150mAh LiPo (included)
Approx. Flying Duration: 4-8 minutes
Scale: Ultra Micro
Minimum Age Recommendation: 14 years
Experience Level: Advanced
Recommended Environment: Indoor
Assembly Time: Less than 1 Hour
Is Assembly Required: No

Needed to Complete

A 4+ Channel DSM2 compatible Transmitter. A programmable transmitter capable of dual rates and exponential is highly recommended.

Kit Includes

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