This is the 105HZ DRS 1.05 cu in Helicopter Engine from O.S. Engines.

    **Additional Technical Info Will Be Added When It Becomes Available.**

FEATURES: Same mounting dimensions as a .90 cu in engine
          Machined blue anodized aluminum heatsink cylinder head
          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

INCLUDES: 105HZ DRS 1.05 cu in Helicopter Engine with Glow Plug and Manual

REQUIRES: Fuel: Heli blend with 15% nitro content

SPECS:    Displacement: 1.048 cu in (17.17 cc)
          Bore: 1.142" (29mm)
          Stroke: 1.024" (26mm)
          RPM Range: 2,000 - 16.500
          Output: 3.7 ps @ 15,000 RPM
          Weight: 21.46oz (608g)