Jetting help for a noob

[wreams]

Im gonna be going to pinetop az from phoenix was wonderin if i need to rejet my carb or what. Its a 4000 elevation change from what i can figure out, should i go down two jet sizes?, im riding a yamaha blaster thats stock.

any help would be great

[Bowtie]

two is a good place to start and all you will probably need, but take a one and third size down with you just in case.

[wreams]

thanks bowtie, thats what i was thinking, gonna bring jet kit with me

[Jimsyfz]

ya a couple jet sizes should do it. Thats what my TRX450 and yfz450 like.