yea, i got 6 years out of my last topend. it was still running strong when i tore it down to build the cub.. like stated, use good oil, keep it jetted correctly, KEEP THE FILTER CLEAN, and let it warm up before ripping on it.. oh, and when, or if, you ever need to resleeve your cylinders, you wil find it cheaper to buy another set of cylinders rather than paying to have them sleeved.