T-REX 550X Dominator Super Combo (DS820/DS825)
The new T-REX 550X is definitely a significant leap in performance, defined by higher performance, the incorporation of numerous innovative design changes and improvements. In short, the performance of the T-REX 550X is outstanding!

The all-new FL Flybarless Rotor Head System features an extremely low center of gravity design that reduces drag during 3D maneuvers while increasing flight responsiveness and precision. A progressive design provides a lustrous silver and red anodized appearance that continues our quality evolution based on our 700 class helicopter. Special composite integration technology has been applied to the main frame, and side rails for battery mounting have been added to the frames. Compared to its predecessor, the weight has been reduced by 250g. This effectively increases power and improves flight time.

The T-REX 550X uses the powerful 730MX (960KV) motor and a high-quality brushless ESC, which together form a highly efficient drive system. The new high-voltage brushless servos DS820 and DS825 are extremely efficient and outperform other servos in their class.


Technical specifications
Length: 1163mm
Height: 344mm
Width: 196mm
Main rotor diameter: 1248mm
Main rotor blade length: 550mm
Tail rotor diameter: 254mm
Motor pinion: 16T
Main gear: 112T
Autorotation gear: 131T
Tail rotor gearbox: 34T Gear
ratio: 7:1:3.85
Weight (without drive system): 2590g


scope of delivery
• 1x T-REX 550X DOMINATOR
• 2x 550 carbon main rotor blade
• 2x 90mm 3K carbon tail rotor blade
• 1x 730MX brushless motor (960KV)
• 3x DS820 high voltage brushless servo
• 1x DS825 high voltage brushless servo
• 1x RCE-BL100A brushless ESC
• 1x MICROBEAST ULTRA flybarless system BXM76542


Is still needed
• 1x remote control (7-channel or more, helicopter system)
• 1x receiver (7-channel or more, suitable for remote control)
• 1x flight battery (6S 22.2V LiPo 2600-5200mAh)
• 1x charger (6S LiPo capable)
• 1x pitch gauge