My KX250 has stock gearing, 51/13 and runs out of revs quickly on the trails, just wondering what everyone else runs for enduro type riding, trails, rocks, climbs, riverbeds and the odd firebreak or railway service road? I'm considering going 14/49 is that too big a jump? I'm used to the delivery and don't want to affect the ability to gas it off a ledge and keep the front up too much, but would also appreciate longer legs when there are flat bits. Any suggestions? Also, I'm a fatty (115kg dry) in case that sort of thing needs to be considered..