jet question

[iowaexer]

i got a slip on hmf pipe with quiet core insert, other than that i am bone stock...i live in iowa....anyone tell me the proper jetting

[jt53142]

I'd say try 168 main, 42 pilot, ncvq needle in the 4th position (out of a 04 yz450f dirtbike, 2 and a 1/2 turns out on the fuel screw, should be close

[iowaexer]

im sorry i probably sound stupid but what is the ncvq needle, im not to familiar with this stuff....thanks

[jt53142]

nvcq is a 2004 yz450f dirtbike needle, the needle is richer, so just order a needle from a 2004 yz450f