Ya 2fast I know what you mean about that weird knocking sound, makes me nervice everytime I hear it. My wife swares by her Bruin. Its not too quick, but it will out-run my Big Bear on the top end. Its like a sport quad with racks.

 

dont really know myself, but i put a set of mud-lites on my 12 y.o sons and it is a bit slower on the topside .

 

i am new to the forum and i have a 07 350 grizzly which is a bruin realy mine is 4x4 and runs in the low 50s its a tough machine i love it its been in mud up to rear fenders the only problem is on the way out on steep inclines the stock snorkel is behind the tail light and will fill your clutch housing up with water but they r strong quads

 

my 02 beartracker will do 56 had a neigbor cop clock me but mabey thats my 25" tires compared to normal 22"