Hi all I’m looking to build a power house cr125 engine.
But I’m unsure we’re to start with what year engine
Or what year bottomend to topend I have been told a couple different ways to go.
First idea is
1996 cr125 bottomend with the 1996 cylinder
But usinging the 1998 cr125 power valves
Second idea
98 motor with Six speed box wider transfer ports standard than the earlier models and tune cylinder send it to Steve clithero
With an hpi ignition 37mm carb
Any comment I will read and take not of what the best idea is to get the most power out of a cr125 engine