After a little bit of R&D in 2015, I've had Kawasaki ZX14R footrests fitted as rearsets on my Rocket now for a few years, and they've been great. Really solid and reliable. Highly recommended.
They look great, really OEM-like (well they actually are OEM; Kawasaki OEM), the heel plates have 3 slots in them which match the III on the Rocket III badge right beside them, and having your feet in that position changes the feel of the bike to become a lot sportier/in control, and offer much greater ground clearance. Gets your feet and shins in out of wind resistance, and hot exhausts.
The foot position is very close to that of a Hayabusa, the difference being the girth of the Rocket being much greater than a Busa.
I've a Brembo master cylinder in there too from a Yamaha R1, so now my rear brake is Brembo MC, Brembo caliper, Brembo pads, Nissin disc, and Triumph/Venhill braided line.
Anywho having read a few posts recently about rearsets (not many available for Rocket), I've decided to post up the option for anyone who might be interested - the kit can be supplied as a package, ready to fit