i have only one hundred and forty miles on mine, all in low gear. unlike others i have had absolutely no problems. the rzr shifts fine ,no meshing of gears, runs smooth, stops great and i can ride it where i would not ride my quads , and where my 6x6 wont fit. i brought out two other biologist and three hounds for about eight miles, the rzr never skipped a beat. i know the weight police will be after me, but around here everthing works for a living and that includes the rzr.