Not sure what the frame size is, About the largest that you can generally find a BMX bike in that has 20 inch wheels. Bike is in really good shape, not really used all that much, been mostly waiting in the garage for my kid to take it out. It's 2 or 3 years old. See website link for the newest version of this bike, which costs $499 US/$600 Canadian (plus tax!). No offers thanks.