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O.S. Engines


O.S. Max 105HZ Heli Engine OSMG1960

O.S. Max 105HZ Heli Engine OSMG1960

Regular price $774.99 CAD
Regular price Sale price $774.99 CAD
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Enjoy huge power and performance with the compact 105HZ!

These are the engines that precision aerobatic and 3D heli pilots have been waiting for! In order for 90-sized machines to nail huge maneuvers and hardcore, smackdown-style 3D it's all about power, and both the 105HZ and 105HZ-R have it in abundance. Displacement has been increased by 15%, while a huge venturi rams air into the carburetor, producing massive power. Plus, they fit in a .90-sized mounting pattern.

  • Featuring the displacement of a 1.05 in the mounting space of a .90.
  • More displacement means more power, and these engines boost displacement by 15%!
  • A huge venturi boosts output even further.
  • The machined, blue anodized heatsink head is light in weight, and cools the engine efficiently.


  • Displacement: 1.048 cu in (17.17 cc)
  • Bore: 1.442 in (29 mm)
  • Stroke: 1.024 in (26 mm)
  • Practical rpm: 2,000-16,500
  • Output: 3.75 hp @ 15,000 rpm
  • Weight: 21.03 oz (596 g)