Sorry to bring the old thread back to life. But I don't suppose you still have the bike and the dep expansion chamber has a part number on it? Trying to find one, but the dt125r sm doesn't have any listed and no one knowes if another one would fit. Ie putting a dt125x on it.
Thanks
Rzez
Just thought I'd say hi as at 27 I've finally got myself a dt125RSM according to gov website there's less than 500 of them registered. Guess that almost makes it a collectible