●Use for T-REX 450 Series.
●Must with:Motor Pinion Helical Gear 12T(H45157).
●New style high strength 121 tooth Mod 0.6 helical main hear for 450 
size helis.  The increase gear pitch can withstand higher power, at the 
same time minimize operational noise.  A great upgrade to withstand the 
modern high power system.
●Utilizes high strength polymer plastic with excellent rigidity and flexibility characteristics.
●Patented unique built in fan design to create induced air flow, effectively cooling electronics and motor.
●Gear ratio 1:10.08.
                
             
            
                
            
            
                            
                        
         
    
* Campos requeridos
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