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Electric Flight Specialists

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E-Flite UMX Yak 54 BNF Basic with AS3X Flight Stabilising Technology (EFLU3550)

E-Flite UMX Yak 54 BNF Basic

E-Flite UMX Yak 54 BNF Basic

E-Flite UMX Yak 54 BNF Basic

E-Flite UMX Yak 54 BNF Basic

UMX Yak 54 3D BNF Basic (EFLU3550)

With a flying weight of barely over an ounce (36 grams), the compact UMX™ Yak 54 3D ultra micro is small enough and light enough to be flown just about anywhere. But what really sets it apart is its specially tuned AS3X stabilisation system. This exclusive technology makes it easy for sport pilots to discover the fun of hovering and harriers without sacrificing any of the agility an expert 3D pilot demands.

Specially Tuned AS3X® Receiver Makes 3D Easy

The AS3X (Artificial Stabilisation – 3-aXis) technology in the model’s receiver makes it easy to discover the fun of 3D aerobatics without feeling frustrated. Using a unique combination of sensors and software, it works behind the scenes to make slow-speed and knife-edge manoeuvres feel incredibly stable without limiting the aircraft’s agility or interfering with your control. The plane simply stays in whatever attitude you want without making you struggle to keep it there.

The receiver also features five pre-programmed flight modes – three default modes that are active out of the box and two alternate modes you can activate later. Each has different AS3X stability settings tailored for your skill level or the 3D manoeuvre you want to try.

Default Modes

General Flight Mode
Heading hold in roll-axis for a locked-in feel

Standard AS3X Mode

Tuned for the expert 3D pilot but great for flying pattern aerobatics, too

Hover Assist Mode

Aggressive heading hold in roll, yaw and pitch so it's easier to enter and maintain a hover

Alternate Modes

Knife-Edge Assist Mode
Heading hold settings for roll, yaw and pitch that make it easy to try knife-edge manoeuvres

Torque Roll Assist Mode

Aggressive heading hold settings for yaw and pitch that make torque rolls easier

Flight-Ready Out of the Box

No assembly is required. The model comes with the motor, Receiver/ESC and servos already installed. All you have to do is charge a battery, bind it to a compatible DSMX transmitter and fly. An E-flite® 150mAh 1S 3.7V 45C LiPo battery (EFLB1501S45) is recommended for best performanc (Battery, transmitter and charger all sold separately)

Feather-Light, Carbon-Reinforced Airframe

Carbon fibre rods brace the wings so you can enjoy outstanding power-to-weight performance and still have the rigidity necessary for crisp control response. The model also features carbon fibre landing gear with wheel spats

Built-In Side Force Generators

Side Force Generators attached to the wing tips boost rudder authority in knife-edge flight so you can fly tighter knife-edge loops.

  • No assembly required
  • Exclusive AS3X stabilisation technology
  • Multiple flight modes that make 3D easy
  • Feather-light, carbon-reinforced foam airframe
  • Side-Force Generators for improved knife-edge flight
  • Potent 8.5mm coreless motor
  • Spektrum DSMX receiver
  • Spektrum long-throw performance linear servos
  • Stunning red and silver trim scheme
  • Carbon fibre landing gear with simulated wheel pants

    Full-range, 6+ channel DSMX® transmitter
    150mAh 1S 3.7V 45C LiPo flight battery (EFLB1501S45 recommended)
    1S LiPo charger


E-Flite UMX Yak 54 BNF Basic (EFLU3550)



430mm (16.9")

Overall Length:

497mm (19.6")

Flying Weight:

36g (1.3oz)


150mAh 1S 3.7V 45C Li-Po (Required)


Spektrum DSMX® with AS3X® Technology (installed)

Please click here to download the manual

Please Note: Due to size and weight limitations we are unable to ship kits outside of the UK


Please Note Due to having our knuckles severely rapped by the Post Office we can no longer send any kind of battery via the post. Any order containing batteries will have to be sent via courier and this will incur a minimum of a £9.49 delivery and packaging charge.
We can not deliver batteries outside of mainland UK


Part Number Description Price Quantity
UMX Yak 54 BNF Basic E-Flite UMX Yak 54 BNF Basic
(RRP £85.99 - Save £8.50)
£77.49 No Longer Available
1S, 150mAh 45C LiPo Battery


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