Another member (and NSC owner) of the HondaCB1000R.com forum seemed to like these... don't have time right now to search the forum, but I was able to locate the pegs... they're pricey.
You can also find Chinesium brands that will be way cheaper, but the quality is often a miss and you'll just end up throwing them away.
On Amazon, I've had luck with MC Motoparts mirrors. They also sell various adjustable pegs for way less than the ones linked above, but I've never had to order pegs so I have no experience.