This is the O.S. Max 105 HZ Helicopter Engine. This is the engine 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 the 105HZ has 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.

Key Features:

• 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.
• Velocity stack increases airflow and enhances engine performance
• Pressurized DRS (Demand Regulator System) ensures consistent fuel flow regardless of the helicopter attitude
• Backplate accepts the Futaba BPS-1 RPM sensor for the GY701 and CGY750 gyros
• Ideal bore and stroke ratio for lowest vibration

What's In The Box?

• (1) 105HZ-R DRS 1.05 cu in Helicopter Engine with 61G Carburetor
• (1) #8 Glow Plug
• (1) Air Funnel
• (1) Check Valve
• (1) 0.1mm Head Gasket
• (1) 0.2mm Head Gasket (installed)
• (1) Product manual

Required for Operation (Not Included)

• Fuel: Heli blend with 15% nitro content
• Glow starter and field equipment

Technical Specifications: