This is the DLE-85 Gasoline Engine with Electronic Ignition.

Features

Engine mount specifically designed to dampen vibration
Exhaust extension on the included muffler aids in installation and
helps protect the engine and muffler in the event of a hard
landing
Ignition module will accept the optional DLE tachometer (DLEG5525)

Includes

DLE-85 Engine with Ignition Module, Spark Plug, Engine Standoffs,
Engine Mount, Muffler w/Exhaust Extension, Fiber Muffler Gasket
and Manual

Requires

Unleaded gasoline
Two-stroke oil
4.8 – 6V NiMH/NiCd, or 6.6V LiFe or 7.4V LiPo battery for ignition
(separate receiver style pack can be used) (LiPo & LiFe requires
voltage regulator)
Propeller

Specifications

Displacement: 84.88cc (5.18 cu in)
Bore: 2.047in (52mm)
Stroke: 1.574in (40mm)
Total weight: 5.09lb (2.31kg)
Engine: 68oz (1930g)
Exhaust: 8.8oz (250g)
Ignition module: 4.58oz (130g)
Output: 8.5hp @ 7500 rpm
Compression ratio: 9.5:1
Gasoline/Oil Mix: 30:1
Suggested props: 25×10, 26×9, 27×8
Height, Crankshaft Center/top of Cylinder Head: 5.5″ (140mm)
Length, Prop Washer to end of Mount: 7.9″ (200mm)
Center of Vertical Mounting Holes: 2.9″ (75mm)
Center of Horizontal Mounting Holes: 3.9″ (100mm)
Mounting Hole Diameter: 0.20″ (5mm)