I don;t want to name drop but John McPint and Bruce Anstey used these at the TT this year and the HONDA BSB team are using them this year as always.
The rearsets are hard to get hold of complete or in a usable condition. I found that many riders use a thumb brake which meant that the lever was not available so no use to me.
The whole setup is a mix of alloy and titanium parts and at first looks is basic but is a balance of form and function. For example, this setup came with the bracket for superstock which allows for the standard NISSIN rear master cylinder.
Many people call these HRC Rearsets, well not quite. These are made by Honda Racing in Louth UK and you have to be very lucky to get a new set out of them. They also called HRP (Not to be confused with the fine German Honda Dealership and IDM Team).
Here is a pic of this seting on the 2012 Samsung Honda CBR1000RR