I have a 12 grizzly 550. bought as a left over in 2013,has just under 5k miles. I just changed both rear axles, new itp mudlites, it will be getting to brake pads next paycheck as there down to what id say s about 40-50% pad left. im happy with its power, but would like a little more grunt from it.. not too much more just a little more power when my thumb smashed the throttle. im okay if I loose a little top end, don’t wanna loose to much, but a little is fine. what can I do? don’t really have the money for an aftermarket exhaust and fuel programmer, however I have the baffle removed.. hope that’s okay! I own a little over 2000 acres that I rde on so the louder exhaust without the baffle is fine.. and hey, it sounds sweeeeeett!