The record for a R 1 powered Go Kart is 154 MPH on the Mojave Mile October 2011 event
4500 to 5000
fast
80mph
170
about 40mph
Accelerate around the corners
2000 mph
50km/hr
Not very fast, possibly about 25 mph.
How fast is 20cc on a go kart engine
30 MPH
faster than the others