does anyone know if there is a selector for this machine to switch back and forth 4wd to 2wd

and does any one know what the top speed is on this i know it cant be high i would think 45mph?

 

I'm not sure Warn made selector that would work on the 86' to 88' trx 350's with the full time 4x4's because of the straight axle front diff's on these model's , i could be wrong so don't hold me to this ; HondaMachanic could tell you for sure be patent he will get to you as soon as he see's your post ; in the mean time some other member may just in with the right info and welcome to the forums !
P.S. you're right the top speed on these quad's is about 45 mph maybe a little more or less , however if you can get a 424 kit for this quad you may get more than 45 mph on top end ; just guessing , and i didn't mention that i owned an 86' Honda TRX350FM Foreman with full time 4x4 and it was the toughest quad i ever owned !

williebee......

 

As far as I know Warn never made a 424 kit for the TRX350D ...

 

Give Warn's tech service a call. The 424 has been discontinued, but there are probably many in stock around the country......