I never installed my ZRX caliper adapter plates I got from Shaun Forgacs (he made/sold a bunch of adapter plates here some time ago), and the bike's long gone. This upgrade is for use on the original rotors, only. I'm selling the caliper adapters, the uninstalled longer Galfer brakeline set (custom order), and a set of 6-piston ZRX calipers to complete the upgrade. Deal includes my email thread with Shaun re: install that has the labelled pic for the adapter install.
NOTE: I believe these adapters will NOT fit the earliest Concours fork tubes (1986-1993). They will fit all 1994-2006 Concours.
NOTE: I bought the ZRX calipers (includes pads) off of EBay. They're painted black (caliper paint). I disassembled and cleaned them, inside and out, but I've never used them, and, given the passage of time, it's likely they need a new piston seal kit before use.
$225 for the works, shipped within Continental US. Payment via PP (regular, no F/F), I'll send you an invoice.