I'm 6'6', 275lbs on a 98 kx500. I'll take all the stability I can get... full width(maybe31.5) on Pro-taper contour, CR high bend. I might try the Pro-t KX high bend next which is about an inch taller, oh ya, i've been running Moose 50 mm riser blocks in the top clamp with no problems. I was worried how they'd hold up on crashes, Moose bark busters too.... since i do crash sometimes,, they save the grips and levers not to mention cute little pinky fingers, and probebly add 1.5 inches to overall width.. Important to mention I'm a woods rider, and still go prety wide. I really do think i'm to big for this bike.lol.