Alpha Plus Falcon .21 Nitro Engine. The Falcon comes pre-broken-in from the factory but due to it's new material piston, it does require more fuel to complete break-in properly of around 1000-2000cc. (2-4 fuel bottles)
New Features:
-New Crankshaft with dynamic balancing weights
-New material piston providing incread wear resistance and prolonged lifespan with a stable thermal expansion coefficient.
Other Features: 
-Ceramic rear engine bearing
-8.0mm Carburetor with variable inserts from Dragon V