aftermarket stems

[zeus54]

does anyone make an aftermarket stem for the brute 750i's,
and has anyone tried wheeling one of these things for long periods of time,because everytime my buddy ride sthe rear wheels longer than a quarter mile it starts to puff black smoke out of the pipe and we find oil in the airbox coming from the crankcase breather tube,, and what about a steering stabilizer


any help would be appreciated thanks ahead of time:)

[firefighterjosh]

I am guessing the oil you find in the airbox is acually gas mixed with the airfilter lube. My 400ex will leak gas out the overflow when doing a wheelie.