I changed the front sprocket on my 07 WR450 to a 12 when I got it and it gave me great gearing for my size and type of riding. Iam going to be getting new sprockets and chain soon, and my question is would it be better to go with the stock 13 tooth and a lager rear to get the same gearing. The 12T sprocket is not as beefy as the stock 13T so maybe it would be better to go with a larger rear? Any advantages or dis advantages? A 55x13 would give me just a little lower gearing than the 50x12. Thanks in advance.