Product details:

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)