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Magnum .46 XLS
Right off My Operating Instructions except for the Bore Stroke and Displacement (which my manual gave out in C C and cm) I got the rest from tower)
Bore : 0.86 inch / 22 mm
Stroke: 0.77 inch / 19.6 mm
Displacement : 7.45 CC ( dunno in cu in)
Practical RPM : 2000 - 17500
Weight 13.1 oz w/ o muffler
BHP : Doesn't say but design and specs same or very similar to Os .46 FX, OS .46 FX is 1.62 BHP at 16000 RPM.