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jetting help

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hey, i just got a full exhaust for my 05 drz 400s....i got the fmf powerbomb header and the fmf power core IV silencer . I am really confused on what jets i need to buy. The bike is all stock except the previous owner had installed a jet kit. But i imagine i need to buy new jets for the new exhaust.

any and all help is appreciated! thanks!

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hey, i just got a full exhaust for my 05 drz 400s....i got the fmf powerbomb header and the fmf power core IV silencer . I am really confused on what jets i need to buy. The bike is all stock except the previous owner had installed a jet kit. But i imagine i need to buy new jets for the new exhaust.

any and all help is appreciated! thanks!

What jet kit do you have?

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160 main 25 pilot? got the 3"x3"?

i just looked at the jet kit, cause he gave me the box....according to the kit it came with a 145, 150, 155, and a 160 main jet, as well as a 25 pilot jet...there are these real short screw things that have numbers on them...there are three left..the 145,150, and 160 are still in the package...so im assuming he put the 155 in the bike....and he did not do the 3x3 mod.

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its a jd jet kit

+1 Near sea leave?

160 main.

25 pilot with stock screw.

22.5 with extened fuel screw.

Blue needle 4th clip.

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If it's got a blue needle it's the JD jet kit..

Make sure it's on clip #4 ,

install a 160 mj with 3x3 mod

25 pilot jet with stock fuel screw or stock 22.5 pj with extended fuel screw..

If you cork the pc4 run a 155mj

JUNURE got it...:bonk:

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