Alloy or Copper Exhaust Ring Gasket?

[xjoey dubsx]

Which should I go with?

Putting a DG Exhaust on my 77 Yamaha RD400..

Need 2 more, so going to buy a total of four..

Teach me!

 

[NvgtrWiggles]

Copper.

 

[teazer]

Why 4 or are two as spares?

 

[xjoey dubsx]

Which should I go with?

Putting a DG Exhaust on my 77 Yamaha RD400..

Need 2 more, so going to buy a total of four..

Teach me!

With the two original ones, there's still room for another on each one when I mounted the two flange things from my DG exhaust.

 

[xjoey dubsx]

Copper.

That's what I ended up going with per other forums recommendations. Thanks.

 

[Hoosier Daddy]

With the two original ones, there's still room for another on each one when I mounted the two flange things from my DG exhaust.

Probably because your originals are already crushed? :

 

[xjoey dubsx]

Maybe? My first time with this. I'm cocky and think I know what I'm doing, but I don't. haha.

 

[teazer]

You should be able to use one pair of new copper type rings in there and dump the old ones. I have seen motors with two in the one exhaust and it still worked, but one good one is better than two old ones.