400sEXridr
09-04-2006, 11:25 AM
my friend just bought a used R4 for his 400ex and he was wondering what would be a good starting point for the jetting. If anyone else has this pipe, his motor is stock and i believe he is using a k&n with a foam outerwear, also what position should the needle clip be in and where should the air/fuel screw be at? Thanks in advance