ending up gettin a 400ex and want a 440 kit as soon as its broken in and was wonderin Which kit has more low end which is faster any help would be appriciated

 

I have a Trinity racing 440 kit. It has a web cam and 12:1 J.E. piston. It runs very well. My motor is faster than any Duncan Racing 440's. Curtis Sparks racing has the best 400ex kits. Their 416 kit is fast and reliable.

 

Powroll has a great kit with quality parts...runs great
cam selection depends on your riding style(cam selection is IMPORTANT)