What is the biggest race legal big bore kit for my cr125?

Question

i want to get the biggest Australian racing big bore kit for my cr125 and i dont no how big i can go can anyone help

Answer 1

in england its 144cc not sure about ausralia but ktm and tm make 144's so its probley the same for australia too

Answer 2

There is none that you can put in and be allowed to race motocross with in Australia.  You can put it in but as soon as you do the bike is illegal.  You may get away with racing it at events not sanctioned by Motorcycling Australia, but all those that are under MA you would not be allowed to race it.  At the bigger events like Junior Nationals and Maxxis nationals the winning bikes are pulled down to check the motor after the final race and usually have the motor painted at scrutineering so you cannot change it part way through the event. If you want to double check just phone motorcycling australia.

Answer 3

Look for a 144cc Big bore kit. Thats about as big as you can go on a 125cc, maybe alittle more

Answer 4

It was recently increased from 144 to 153 by the AMA. 100cc to 153cc 2 stroke 151 to 250cc 4stroke.

Answer 5

you idiot's, AMA = American Motorcycle Assosiation - Australia is not in America

I don't know, but it's not AMA in Aus.