Does an '09 WR450F exhaust pipe/header fit an '06 WR450F?

6 replies to this topic
  • umpire3

Posted November 11, 2013 - 07:15 AM


Does an '09 WR450F exhaust pipe/header fit an '06 WR450F?


The part numbers are close.  Looking at the part numbers:


2006 -> 2S2-14611-00-00.

2009 -> 5TJ-14611-10-00


The middle numbers match up, however the prefix and suffix don't.


Part #1 on drawing.

Attached Thumbnails

  • exhaust pipe.jpg

  • woods-rider

Posted November 11, 2013 - 08:07 AM




Part Number in the format XXX-XXXXX-XX-XX

The first three digits are the Model Code (every model in the Yamaha Product Line has a unique model number) all parts are given a Model Code of the first model they were used on.

The middle five digits are the Basic Code number and indicates the actual part, i.e. 11631 = piston; 11311 = cylinder, etc.

"W" substituted in the first position of this five-digit group (000-W0000-00-00) indicates a factory assembled kit which differs in content from the original assembly used in production (i.e. 2M0-W0046-00-00 – Rear Break Pad @$$’y).

The next two digits are the Design Code and Design Change digits (so 01 means the part has had one design change). This part may or may not appear different, but it will be interchangeable with the original part.

The last two digits are the Color or Finish Code.

For a Part Number in the format XXXXX-XXXXX-XX

All these parts are Hardware (fasteners), they all start with a '9' and end in '00'. - 9XXXX-XXXXX-00

The second and third digits tells us what type of fastener:
0 - 'various'
1 - bolts, cotter pins
2 - screws, nuts
3 - oil seals, O-rings, bearings
4 - spark plugs
5 - bolts, nuts
6 - ISO bolts
7 - ISO screws and nuts

The fourth and fifth digits tell us what material/surface finish (e.g. chromed).

Digits six and seven give the diameter (inner or outer) e.g. 08 would be an M8 size.

Digits eight, nine and ten are the length (except for '901' bolts for some reason)

There are also standard fastener types...e.g.
90105-XXXXX are Washer based bolts
90116-XXXXX are Studs
90401-XXXXX are Union bolts

99999-XXXXX means that a part has been superseded by a kit.

Edited by woods-rider, November 11, 2013 - 08:08 AM.

  • umpire3

Posted November 11, 2013 - 11:23 AM




This should be "Pinned" for future reference.  How is that done?

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • woods-rider

Posted November 12, 2013 - 07:37 AM




This should be "Pinned" for future reference.  How is that done?



Only mods can pin things

  • umpire3

Posted November 29, 2013 - 08:27 AM


'05 and '06 will fit on '07-'09.  You must use a muffler gasket from an '05-'06.  '05-'06 exhaust header diameter is 1.6" while the '07-'09 header diameter is 1.5".


Likewise, an '07-'09 will fit on a '05-'06 with the use of a '07-'09 muffler gaskest.

  • alexo

Posted December 21, 2013 - 01:50 PM



What about fitting '08 header to '04 bike?

can this be done? what's the actual difference?


  • alexo

Posted December 23, 2013 - 04:09 AM


It turned out that I'm not using the standard end, so the 2008 fitted with no issues.

Can anyone tell what this end pipe is from? model/year?







Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.