i have a gas gas 125 and it sounds reali quite unlike all the rest.

how will i know when the exaust packing will need changing ?

Gday, its something that technically should be done on a regular basis, say every couple of years for our bikes. Same with cleaning the rest of the exhaust system. How old is your beast? Gasser mufflers can be repacked, I've done a couple, you need to drill out the pop rivets to get them apart, clean and repack and re - rivet back together. Pop rivets and tool available from any hardware shop. Packing from any bike shop.

Cheers,

Stork

Morning the bike is a 2003 it looks like its been dun before at some time Thanks Matty

In my oppinion i should be done a lot more regular than once every couple of years.

I have an 2002 GG 280, and have planned to repack my muffler... but not done it yet. It sounds like most any other trials bike. What happens if you let it go too long?

I have an 2002 GG 280, and have planned to repack my muffler... but not done it yet. It sounds like most any other trials bike. What happens if you let it go too long?

The performance and throttle response will deteriorate to a degree, but more important (beside irritating the bejezez out of the riders around you) is that the center steel perforated center will vibrate with exhaust pulses and gradually wear the inside so the short tubes that it fits into and will eventually come loose from the aluminum tubes and shift inside the muffler body. Unless you are good at repairing, you will have to replace the whole muffler.

Repacking the oval muffler bodies can be tricky (you can't just wrap the sheet around the core like a round muffler) and unless you have some experience with the "cut and fit" method, I'd use something like "SilentSport" packing which is a special loose packing, and quite easy to work with. The main thing is not to pack it too tight. Just follow the directions and you'll be fine.

Jon