Rick,


You can see these silencer options in the [link=http://www.mvvs.cz/hl_strana_cz.html]MVVS Czech language web site[/link].

Use the 'Katalog' link and then the 'Vyfuki' link and scroll down to the 10-15 cc section.

The .91 has a considerable advantage when using the full length pipe over the tuned silencer.

You must select the exhaust configuration (side, or rear), and modify the engine accordingly, before first starting it and doing the break-in.