SPECIFICATIONS:
Lenght:                                 1080mm
Height:                                 160mm
Width:                                  310mm
Main blade size:                        425mm - 580mm
Tail blade size:                        72mm- 85mm
Motor pinion:                           12t included;13t optional
Helical CNC Main gear:                  106t
Tail pinion:                            13T
Autorotation gear:                      60T
Main to tail gear ratio:                4.615
RTF weight:                             2500g-2800g
Main shaft diameter:                    10mm
Feathering shaft diameter:              8mm
Tail boom diamater:                     20mm
Max battery size:                       150mm*48mm*55mm(6s)

Includes:
(1) XLPower 550Kit

(1) XLPower Brushless Motor4025
(1) Set of RT 560mm Rotor Blades
(1) Set of XLPower85mm Carbon Tail Rotor Blades
(1) Foam Blade Holder

Needed to Complete: 
Transmitter (7-channel or more, helicopter system)
Receiver (7-channel or more)
(1) 6S Li-Po 3000 ~ 5200mAh
(1) Digital Pitch Gauge
(3) Mini Size Cyclic Servos
(1) Full Size Tail Servo
(1) 6s ESC (80A Minimum Recommended)
Misc. Building Equipment