I am not going to buy my kids a street bike ever, but they will have an assortment of dirt bikes.
After they are out of the house, they can do what they want.
But 16 year olds can barely drive a car, let alone a bike.
2013 Kawasaki KLR 650
2008 Yamaha WR250X
2001 Kawasaki ZRX1200R - Ran Over
1987 Kawasaki 454LTD - Now a really fast golf cart