Hi Rocker
  I have put a Billet Clutch slave cylinder on my 749S, not from ebay but from our own Nelly at Cornerspeed. Looks great (anodised Black 

 ) and does reduce the effort needed to pull in the clutch lever, now it's as light as a CBR6's clutch 

.
 Would recomend getting in touch with Nelly if your interested in one 

. 
 Darren