A 1997 rm 125 can go around 60mph.
RM 250 goes 90fm
about 80 mph
the suzuki rm 65 goes arounf 60 miles per hour
id go with the Yamaha or suzuki, but look into four strokes there better bikes
With stock gearing around 63 mph
With stock gearing 50-55 mph
a suzuki rm can achieve speeds up two 70 - 80 miles and hour
A suzuki rm 85 l will go 115-140 kph depending on if it is tuned and the weight of the rider ect
My Sukuki 125 rm is a year 2006 and it will go to 75 -80 mph we raced it with an 800 Polaris and of course he smoked me but when he did ride next to me for a little while to see how fast it was 77 mph. They are really nice to have and great for start offs in racing! :D
With stock gearing would be in the 75 mph range.
The lever should fit but none of the gears will.... it would be a shorter lever than the ttr i believe