Is this what you are looking for? http://www.sjscycles.co.uk/product.asp?pf_id=15019&src=lfgss
It's a banner add on the LFGSS web site. I've run a sealed bearing/aluminum cub BB on a BMX bike, not a huge weight penalty and trick looking.. Don't recall who made it though.
@iamgoode started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
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Is this what you are looking for? http://www.sjscycles.co.uk/product.asp?pf_id=15019&src=lfgss
It's a banner add on the LFGSS web site. I've run a sealed bearing/aluminum cub BB on a BMX bike, not a huge weight penalty and trick looking.. Don't recall who made it though.