My MirraCo frame has a headset similar to this - http://www.chainreactioncycles.com/Models.aspx?ModelID=75328
It has cups which go into the frame, then has ball bearings inside these cups..
My question is, can I swap to these - http://www.ebay.co.uk/itm/110996707917
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It doesn't have the bits that go into the frame so how would I fit them?