I just bought some Arlen Ness mirrors (haven't arrived yet). They make some really nice black slim mirrors and they usually come with the right thread to fit metric or imperial cruisers.
http://www.ebay.com.au/itm/ARLEN-NE...rcycles_Parts_Accessories&hash=item259cc6136b
http://www.ebay.com.au/itm/ARLEN-NE...orcycle_Parts_Accessories&hash=item43cde03d8d
http://www.ebay.com.au/itm/ARLEN-NE...orcycle_Parts_Accessories&hash=item43d38b8113
Peter Stevens up at Ringwood has them in stock but they're in the Harley section of the store. Means you can go and look at them and get a sense of the size.
http://www.ebay.com.au/itm/ARLEN-NE...rcycles_Parts_Accessories&hash=item259cc6136b
http://www.ebay.com.au/itm/ARLEN-NE...orcycle_Parts_Accessories&hash=item43cde03d8d
http://www.ebay.com.au/itm/ARLEN-NE...orcycle_Parts_Accessories&hash=item43d38b8113
Peter Stevens up at Ringwood has them in stock but they're in the Harley section of the store. Means you can go and look at them and get a sense of the size.