what perf. parts to i buy to get the rpms up so i can get my quad to go faster

 

throttle , thumb exercises , big hill .... lol j/k

Get a CDI box , that will increase your rpm range if there avalible for the 250 , I know its $400 for a cdi on the Z/KFX400 's .
What a joke , you can buy one for $72 for the 400EX

 

fst4wrd, you can send your stock cdi to a shop to have the limiter removed, they usually charge aroud $70.

If you check the net i'm sure you'll find a shop that does it.

 

No shat , I will have to look into that , I refuse to pay that kind of money just cause its adjustable , your only going to adjust it once .

 

Get a CDI Box!