08 450 header help gray

i have a 06 450 just bought a header used of from the web site i recieved it today believe its a 08 the end that goes into the mid pipe silincer is bigger than my 06 can i use it and how. will it effect my performance. thanks

i have a 06 450 just bought a header used of from the web site i recieved it today believe its a 08 the end that goes into the mid pipe silincer is bigger than my 06 can i use it and how. will it effect my performance. thanks

you probably got a YZ pipe. the OD of the 08WR head pipe where it slips into the silencer is 38mm. the yz pipe is about 45mm. measure it and tell us what you got.

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