200/25/zr aftermarket backbox

So, with a nice big (though temporarily patched) hole in my standard backbox, my little 200 (bubble) is in need of a new backbox (so anything for a 200/25/zr), and i'd like something a little freer flowing and noisier (though not obnoxiously loud!) has anyone got anything available?



though must be something i can bolt on, not wanting the hassle of getting anything welded on!

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