For visually impaired users: Browse the streamlined version of our website.

Align T-REX 550X Dominator Super Combo Helicopter Kit w/BeastX, ESC, Motor, Servos & CF Blades

Low Price: $1,069.99
Back Order Add to Wish List
Out Of Stock Online
You may back order this item and it will ship when it arrives in stock.

Please Log in to receive a notification when this item arrives in stock.

FREE Shipping Eligible!
This item is eligible for Super Saver Shipping Learn More
This is the Align T-REX 550X Dominator Super Combo Helicopter Kit. With a size that falls in-between large and small models, the T-REX 550 delivers stability and agility that make it incredibly popular. The T-REX 550X Dominator features Align's outstanding design concepts and has been combined with a superior power system that will guaranteed jaw dropping performance. Updates to the 550X Model over the previous 550L Model include High Voltage Servos, 5 degree nosedown Tilt with included landing gear, Align 100A Brushless ESC, 730MX Motor, Tail Pitch Assembly, & overall weight drop of 250 grams.

T-REX 550X utilizes composite material integration technology on the carbon side frame plates, also adding battery mounting rails and top mounted motor base design to make assembly easy and protect the components. Using direct servo CCPM control, and a single piece main bearing block with integrated servo mounts; combined with the low CG EFL rotor head, the 550X delivers exhilarating 3D performance and unimaginable flight speed. Plus, a high quality tail gearbox design, combined with a dual point mounted tail pitch control assembly helps to minimize slop and increase rudder control precision.

T-REX 550X Dominator has been equipped with the 730MX 960KV motor with unique DOMINATOR scheme to provide extremely efficient and powerful output. High voltage brushless BL820H/BL825H servos provide high torque and precise, lightning fast reaction, and low operating temperatures after flight will extend the service life.

The BeastX Plus flybarless system features a 6-axis gyro and 32-bit high speed processor. This processor and gyro work in harmony together to provide the pilot with exceptional flying characteristics, proven performance. Additionally, the BeastX Plus features improvements to vibration detection and absorption seen at the gyro and accelerometer level. With these improvements the BeastX can operate in harsh vibration environments and the pilot would not notice any bad tendencies or bobbles while in flight.

  • T-Rex 550X Dominator
    • Equipped with the low CG EFL rotor head, for exhilarating 3D performance and unimaginable flight speed.
    • Designed with direct servo CCPM control, and a single piece main bearing block with integrated servo mounts similar to that of T-Rex 700L, for simplified servo installation and clean aesthetic.
    • Updated swash anti-rotation guide with embedded anti-wear material, effectively minimize the wear between swashplate long ball and guide.
    • Innovative sliding battery tray rails imbedded into the 3K side frames, with patented spring loaded latching mechanism, allowing for quick battery access as well as battery protection.
    • Carbon side frame plates utilized composite material integration technology, adding battery mounting rails. The clever use of open spaces within the frame resulting in a structure that is both rigid and aesthetically pleasing.
    • High quality tail gearbox design, combined with dual point mounted tail pitch control assembly to minimize slops and increase rudder control precision.

BeastX Plus Features:

  • Servo center pulses:
    • Swashplate: 1520Ás
    • Rudder: 1520Ás, 960Ás, 760Ás
  • Servo pulse rates:
    • Swashplate: 50 - 200Hz
    • Rudder: 50 - 560Hz
  • Swashplate mixing:
    • mCCPM, eCCPM: 90, 120, 135, 140
    • Swash phasing adjustment (Via BeastX USB BTXA76007 and StudioX)
  • Input signals:
    • Single channels
    • PPM serial pulse
    • SRXL (JR XBus, SUMD, M-Link)
    • Futaba S.Bus/S.Bus2
    • Spektrum Remote Receiver (DSM2/DSMX - with BeastX Adapter BTXA76009)

  • 550X Dominator:
    • Length: 1163mm
    • Height: 344mm
    • Width: 196mm
    • Main Blade Length: 550mm
    • Main Rotor Diameter: 1248mm
    • Tail Rotor Diameter: 254mm
    • Motor Drive Gear: 16T
    • Main Drive Gear: 112T
    • Autorotation Tail Drive Gear: 131T
    • Tail Drive Gear: 34T
    • Drive Gear Ratio: 7:1:3.85
    • Weight (w/o power system): 2590g

  • BeastX PLUS Specifications:
    • Input Voltage: 3.5V-8.5V DC (operation with 2 cell LiPo is possible)
    • Processor: 32 Bit ARM
    • Sensor: 6-Axis MEMS (Gyro+Accelerometer)
    • Dimensions: 36x25x14mm
    • Weight (w/o wires): 11g


  • (1) T-REX 550X DOMINATOR Kit
  • (1) 550 Carbon Fiber Blade set
  • (1) 90mm Carbon Fiber Tail Blade set
  • (1) 730MX Brushless Motor(960KV)
  • (3) DS820M High Voltage Brushless servo
  • (1) DS825M High Voltage Brushless servo
  • (1) Align RCE-BL100A Brushless ESC
  • (1) Microbeast PLUS Flybarless System
Needed to Complete:
  • Transmitter (6-channel or more,helicopter system)
  • Receiver (6-channel or more)
  • Pitch gauge or Digital Pitch Gauge
  • 6S Li-Po 2600~5200mAh battery & Charger

This product was added to our catalog on November 4, 2016

Tom G
Average Rating: 5
Verified Owner
Thursday, Sep 27 2018 (8 months ago)
Align T-REX 550X Dominator Super Combo Helicopter Kit
Great kit with excellent quality. You can beat this for the price and this size. This heli is really a 600 size with 550 blades. Build was easy and had no issues with the maiden flight. Only con is the user manual, it could have better detail; the manual also skips a few steps sometimes which can throw you off. Highly recommended!