I did a search and it seems like most of the threads focus on the gearing on the WR450, which is aparently different than it is on the 426. I've had my bike for a little over a year now and done mostly all trail riding in the woods up here in northern Cali. Previous owner put a flywheel weight on, I'm assuming because there is a spacer there on the case. Bike is pretty good in the woods except for a mystery stalling issue I can't seem to solve, that occurs when she gets warm and I grab some clutch in the tight stuf, but that's a different thread... RIght now the bike has 13/52 on it, which seems pretty short. Just curious what other guys are running and for what types of riding. I'm dirt only and taking my first desert trip next week, thinking I should probably add at least one tooth on the front.