Displacement: .72 cu in (11.80 cc)
Bore: 1.06 in (27.0 mm)
Stroke: 0.81 in (20.60 mm)
Cylinders: Single - Chrome Plated
Total Weight: 16.6 oz
Engine (Only) Weight: 16.0 oz
Muffler Weight: 0.6 oz
Displacement: .82 cu in (13.80 cc)
Bore: 1.14 in (29.0 mm)
Stroke: 0.80 in (20.40 mm)
Cylinders: Single - Chrome Plated
Total Weight: 17.6 oz
Engine (Only) Weight: 16.0 oz
Muffler Weight: 1.6 oz
Muffler weight on the .72 is only .6 ounces? Pretty light, most fourstroke mufflers I have seen for that size are just under 2 ounces not less than one ounce. I suspect the .72 weighs 15 ounces without muffler and the muffler weighs 1.6 ounces.