The easiest, cheapest, and fastest way to get them bars up high and comfy.

The overall length of this thing is 21cm but after taking into account the minimum insertion required to go into the steerer 15cm is left over as an extension for the stem that is currently on your bike.  Think of it as a stilt for your stem.

Expect to put on longer brake and shifter cables and housing, too.  Here's some cheap road brake C&H.

Now available in Satin Silver, not black.