World's first ever Yamaha Genesis RX1 snowmobile engine used for aircraft is mounted on Air Command Gyrocoper built and owned by GT Mills of Mohawk Aero

World's first successful Yamaha Genesis 4-cyl (YG4) Aircraft, built & flown 2012 by

Greg Mills.  Engine taken from

a 2003 RX1 snowmobile.

143 HP, 600 lbs

static thrust

68" prop.

MTOW 1180#

Dry wt. 570#

Engine wt. 120#


​Hy-Vo chain

"Silent Drive"


prototype 2015

Gyrocopter and Trike Headers from $495.00

      Tractor FW headers from $895.00

Low-Hr. Engines from


Bead Blast & Seal $595.00

KITFOX FWF Frames!!!

  Only $995.00!!!

     Chromoly 4031

 professionally built by

      only the best

  Pro NASCAR welders

   in North Carolina

Parts & Complete Kits AVAILABLE

AK7 Gearbox PSRU available in 2.72, 3.0 & 3.47:1 ratios, and choice of prop flange.

Prices from $1795.00

All YG2 and YG4 adapters for all PSRU's:  $1495.00

Rotax C and E box adapter $1495.00


Mohawk GT5 Sprag Clutch: $595.00

           GT4 Roller Clutch: $695.00


 Mohawk GTF Flex Shaft Coupling 


Air-Tech RK400 Centrifugal Clutch: $550.00


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GT Mills

Mohawk Aero Corps

108 Marabou Drive

West Columbia, SC 29169

Tel: 1-912-344-7900

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like make of aircraft, &

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