We had a member recently who had similar requirements so we supplied and fitted the Milltek system, one happy Zed owner, the tips aren't slash cut like the OE...
We list them new - http://cougarstore.co.uk/index.php?main_page=advanced_search_result&search_in_description=1&zenid=7dd3f2a81a498b6c2770e4c87ece5eac&keyword=Banana