EPHIL 38cc PRO single-cylinder petrol engine for airplanes, rear exit and starter
Included in the box:

An X-38cc-R Pro rear exhaust engine with its Walbro carburetor and starter
A silencer with gasket and fixing screws
A CM-6 Iridium spark plug
An electronic ignition module
The starter controller
An engine mount (spacers)
User manual
Technical specifications:

Displacement: 38cc
Bore: 39mm
Stroke: 32.5mm
Power: 4.2hp
Operating range: between 1800 and 7300 rpm (propeller 20x9)
Ignition module supply voltage: between 6 and 14V
Recommended 2-stroke oil mixture: 3.33%
Compatible propellers: 19x8 / 19x10 / 20x8 / 20x10
Engine weight alone: 1216g
Silencer weight: 73g
Engine mount weight: 100g
Ignition module weight: 104g
Starter weight: 109g
Starter controller weight: 36g