BB replacement cup for Shimano UN54 plastic cup

[Thunderchild]

Anyone purchased one of these: http://problemsolversbike.com/products/up_cups/
to replace the plastic UN54 cup? Any problems with it fitting to the UN54 BB?

Thanks
Thunderchild

 

[BerthaPog]

Have one on my Explosif with UN54 - works fine, and looks nicer than the plastic ones.

Got mine from SJS: http://www.sjscycles.co.uk/shimano-tapered-square-sealed-cartridge-dept21_pg1/

 

[FluffyChicken]

Just buy the UN55 which now comes with a metal cup replacing the UN54 series.
Probably about the same cost as that cup. (£17 at CRC currently)