Tags: SK_90AR_Acro_Engine_W_Muffler 

Features:

The SK line of engines is produced in our "state of the art" facility.
Holding the tightest tolerances and smooth internal finishes they are a sport pilots dream.
Our port timing allows for easy starts and the high torque likes large propellers.

Specifications:

Weight: 565g / 19.93 oz (without muffler); 782g /27.58 oz（with muffler）
Prop shaft diameter: 7.86mm/ 0.3 inch
Suitable Prop:13x8 / 14x6

MOUNTING DIMENSIONS:
Distance between mounting holes on same side: 0.98" (25mm)
Distance between mounting holes on opposite side: 2.0" (50.8mm)
Height from bottom of crankcase to top of cylinder head: 4.0" (101.6mm)
Height from center of crankcase to top of cylinder head: 3.0" (76.2)

Width at mounting flanges: 2.4" (60.96mm)
Width at crankcase: 1.65" (42mm)