Not a morini by any means.But grubee makes starfire engines and skyhawks.They are better generally than most other engines by other companies.They are the original.But,If you expect reliability over 5000 miles.Save up the cash and order a morini 5.8 or 9 h.p. engine.I own a skyhawk.Heard If you replaced the bearings with high quality bearings you could make em last a lot longer.I just ordered 2 spare cylinder and piston kits being I have more prob with that aspect than the bearings.In short,break It In right and don't run full throttle 24-7.Especially down hill and you may get 1000 to 5000 miles If you use good oil and keep out air leaks and don't run too lean.Rack mounts known to get over 12,000 miles and more.If you are not Into rebuilding or mechanically Inclined.Upgrade to something better alont the lines of a rack mount,ezm frame mount,or a morini 2 stroke.Gonna cost 400 to 900 bucks though.