125-200cc exhaust o ring

Mine is leaking heaps of spooge . Anyone know if any other bike exhaust O- rings area same fit ?
eg Ktm 200 , YZ 125?

if heaps of sponge is coming out look for the solution to that
the o-ring seals the exhaust and offers a cushion between the head pipe and cylinder due to movement at different rates
if you see sponge usually it's a jetting or ignition issue (spark plugs included)

I think spooge is normal - jetting is good

Id rather some spooge than it running dry

Motul 800 seems to spooge more also


My oring has slight damage

I could be running fuel - oil ratio a bit rich though at 40 :1 for Motul 800 - will change to 50 : 1 but it will still spooge

I think so. I was running 800 at 65:1. I switched to Motul 710. It has a lower flash point and burns cleaner. No spooge

The ones I use from my o-ring kit are an R-29, the kit says that is a 41x3.5mm.

Later,