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Tyler450

Help with exhaust ( aftermarket ) Yz450f

5 posts in this topic

I'm thinking I'm gunna go with the pro circuit T4 with T4 header for my 06 yz450f and was wondering what everyone thought , if you use one , what there like , etc

Should I order the JD jetting kit with it ?

Thanks guys !

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You will get a bigger gain by simply installing the JDJetting kit, the exhaust system is just fin on the 06 YZf IMHO. Much more bang for your buck in other mods.

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