Would this fit my 400?

[Smallkat]

There is a scabby Impulse GK71E exhaust on ebay. Sorry I don't know how to add the link.

Would this fit my 400?

[fossie]

https://www.ebay.co.uk/itm/274447328145 ... SwHAdfJvee
Do you mean this one ....I wouldn't like to say ...GK71 is impulse from 1986-7 and it came with a 4-1 system So not sure what this is ...Eitherway the 86-7 impulse engine is too early for the 400 Kat ..you need the 92 impulse GK79 that system is a 4-1 stainless system and a straight fit.
The first bike is the 86 not fitting system.... The 2nd is the good to go

[stockcar]

Can't help with fitment but is it this one??

https://www.ebay.co.uk/itm/133578270006 ... SwubRfsqO3

And a search......

https://www.ebay.co.uk/sch/i.html?_from ... t&_sacat=0

[fossie]

No to the first and only end cans for the GK79 ..

[Smallkat]

Can't help with fitment but is it this one??

https://www.ebay.co.uk/itm/133578270006 ... SwubRfsqO3

And a search......

https://www.ebay.co.uk/sch/i.html?_from ... t&_sacat=0

Yes it's that one.

But now I realise it's the GK79 one I want. Thanks Fossie.

Actually that whole Impulse looks pretty good.