SPECIFICATIONS:
Lenght:                                 1010mm
Height:                                 160mm
Width:                                  310mm
Main blade size:                        425mm - 520mm
Tail blade size:                        72mm- 86mm
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:                             2400g-2700g
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 Motor 4020

(1) HW Platinum V4 100A 
(1) Set of RT 510mm Rotor Blades
(1) Set of XLPower80mm 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