I just installed a set of Hagon 2810 shocks on my CB750K2 and thought it would be useful to provide some user feedback as these were custom made to accommodate the eye-cleavis.
Purchased from David Quinn Motorcycles. Superb service and fast turnaround. He was in contact the with UK Hagon factory about customising a set of 2810 shocks for the CB750 and they said no problem.
http://www.davequinnmotorcycles.com/cgi-bin/webc.cgi/Specialty_Shocks.htmland more on the 2810 shock
http://www.hagon-shocks.co.uk/catalog/partdetail.aspx?PartNo=34003TTSAPrice paid - $305 + $17 shipping. Shipped Thursday arrived Friday by UPS Ground.
Here are my old shocks - 1982 CB900/CB750 shocks...crap!

To be compared to Progressives on my K4

Here are the new Hagons installed:


No problem with chain guard clearance

10 click Adjustable dampening

On the bike - sits a little taller.

Initial impressions from 3 mile ride on bumpy Boston roads - HUGE improvement!!! Firm, crisp handling. Need to play with the settings but much better than what I had.
Will update after more serious miles. Thanks also to Voxonda and others for some good info when I was debating which shock to buy.
cheers
Andy