I have a 2001 YZ426f and the guy I bought it from put ona 49 tooth rear sprocket and a stock front sprocket. He also put a 13 oz flywheel wt on. I am considering changing it back to the 53 tooth because I will be mainly riding single track. I have ridden it with the 49 but I have to use the clutch alot for the tight technical stuff. Does anyone have any recommedations? Should I leave the 49 or switch to the 53. Thanks!