my exhaust is blowing a little bit but only when it is cold so i decided to replace the rubber washers, i had a look at the splat shop and although they are only about £1.50 to buy and i need two, the post is £3.80 which is more than the two washers together, is their any where else i can get them from, other than that i will have to wait until i need something else from the splat shop and buy them then.

If it is only blowing a little bit, you can probably just spread some high temperature silicone seal on them and reassemble. I would do that even with a new set of O-rings.

If the O-rings are black, (not burnt, just black material) you can buy them at a good hardware store. If they are red, they are Viton which is a high temperature material and the Splatshop price looks good.

I replaced two on the middle box of my Monty 12 months ago from my local engineering shop like websters

Just took the old seals in to match them up, I did mention the heat factor to them, no probs so far,

it is the middle box to the silencer and they are black, i have bought most of my stuff from the splat shop, they even forgot to put a air filter in with one order and just one email and it was with me the very next day, it's just a shame that we have to pay a standard price for the post, i will have a look around town tomorrow, thanks for the help.

1999 sherco 250

Hi, I need a bit more of help with my exhaust,I had a look at the o rings on the middle box and they where in little bits, so I cheeked the others and they where just as bad, the thing I don’t understand is, on my exhaust it has two o rings on each part but one looks like it is made of rubber,(red) and the other one that is further back looks like it is made of plastic, when I look at the sherco spares on the splat shop site,it gives me the part but says I need two of the same one, is this what I should use now, two of the same rubber o rings for the middle box and two of the other size rubber o rings for the silencer or do they do the plastic ones, I hope I’m making sense.

regards

Tony

I suspect that the "plastic" ones are really buna-n rubber that have been cooked. If you can get red Viton, do it. They are more expensive but are designed for high temperature.

thats what the splat shop have said as they have never done a plastic o ring, i have ordered the o rings from the splat shop and it looks like one set is red, they are the most expensive one and the other s are black, also i have got some high temperature silicone on it's way so it should be a proper job when i have finished, thanks for the help.