at least 100
121mph or 187kphthere is no way in hell dude.! you probably have one and lost to a Banshee and now you walk around wishing your quad would do 121mph.. get a life!!!!the max speed of a stock TRX 450r is +-86mph (140)
If you are talking about a klx 450r, then the answer is 96 mph.
160
About 73 mph.
70mph
I have been 77mph on mine
My 2007 450R with HRC kit will run around 85mph
It's goes around the 25 lower 30's
same as the trx 450
it will go from 75 to 80 stock.
The top speed of 50cc quad bike is aprrox. 30mph to 40mph. motorcyclesdir.com/
110mph