need more bottom end and top

[Hondarider440ex]

i have an 04 yfz450 and am racing motocross and it doesn't have no botton to jump the big jumps and not atol of top for straightaways it is stock what can I do to it to make it faster all around like what kind of, exhaust,cam,sprockets,piston,or something to make it faster.

[DieselBoy]

get a diesel engine then....


you find the yfz slow?

[JIMTED79]

The best thing to do is get a full exhaust system, air filter and jet kit. That will make a huge difference and if your still not happy then get the cams, piston and porting but you need the stuff I mentioned up top make to make it shine anyway.

[infantry317]

Yeah, what he said, plus cam mod. (if you know what you're doing). If your YFZ doesn't have enough power then...you must be a pro :D