Dirt Wheels 400 EX into 417cc bolt on mods
Posted by Jay on January 2nd, 2010
The Honda 400 motor is proven but can just use a bit of a boost from a cam and piston. Hot Cams and CP took care of that with a FMF pipe.

Posted by Jay on January 2nd, 2010
The Honda 400 motor is proven but can just use a bit of a boost from a cam and piston. Hot Cams and CP took care of that with a FMF pipe.
