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forklord

Dynojet & Keihin Jet #'s

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So I found this jet in a bag in my house right before i went to the yamaha shop to buy one. its got a star like thing and 165 next to it. same writing and size/shape as my stock 160 main jet on my 07 yz450. So I'm assuming this is a keihin jet. but i put a 165 dynojet main jet with adaptor in my bike. do they use the same numbers? I heard theyre different. What is strange is that the dealer is telling me its a 42 pilot and 150 main in my bike stock yet a 45 and 160 came out. I want to put these leftover jets in my yfz450 so I just need some clarification. Thanks!

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