hi i have a 2006 fury 150 ive been loveing this bike but the guy i bought it from failed to tell me about its several problems i have fixed most everything on it gotten alot of use out of it and really enjoy the sturdy build but my main issue is i went to a shop to have a noise checked out a few days ago and i was out rideing and it started spitting spuddering then cut off the shop had told me my crank bearings had went bad and it was just a matter of time beforte it left me stranded they were right i think but nanyway im looking for a replacemeant motor its a 150cc gy6 ive found a ton of them on the net a few nice ones but im not sure what size is right all of them say the rear sway bars can be different sizes for different tires and to measure urs first by the way swaw bar may not be the right part but if anyone knows the correct measuremeants for the motor ide like to replace it and keep going