Picked up a new project

[neinzone]

Hey all,

I've been lurking on this forum for quite a while now after my cousin told me he had a 1981(?) XS400 in his garage that he wanted to get rid of. So I picked it up today and I can't figure out what year this bike is. There is no date or year designation on the information label on the neck. I plan on turning this into a cafe racer, but would like to make sure that I purchased the correct parts. I know that he acquired an early model tank, but that is the extent of it's history.

Any help figuring out the model year would be greatly appreciated. Thanks!

 

[xschris]

It's an 81. 4R4 is the 81 SH- heritage. Your fuel tank is off a 77 D or 78 2-E or even a 76 xs360.

 

[neinzone]

Awesome! Thank you for the help.

 

[NewHavenMike]

Are those mufflers factory? I like them.

 

[neinzone]

I believe they are, based off google searching 1981 xs400 heritage. I’ve ordered some parts today so I can, hopefully, get the engine running.

 

[MoonClipper]

I believe they are, based off google searching 1981 xs400 heritage. I’ve ordered some parts today so I can, hopefully, get the engine running.

Confirming they're stock, they look the same as the ones on my 82 Maxim.

 

[xschris]

They are stock 80-82 sohc mufflers. They have the crossover between them that helps with scavenging. Good overall performance and sound good. Hard to get ones than are still in good shape as most people cut them up or drill holes in them thinking it helps with performance.

 

[neinzone]

Aside from mikesxs and ebay/amazon are there other reliable parts sources for our bikes?

 

[xschris]

When looking for parts I look by using the OEM part numbers. I avoid aftermarket stuff as most is junk or don't fit correctly. https://www.yamahapartshouse.com/oemparts/c/yamaha_motorcycle/parts This site is great for getting part numbers and seeing assembly pics. You can also post an ad in the classified section of the forum for stuff.

 

[neinzone]

Thanks!