I like bar risers — the older I get the more I like bar risers. You might not think that 20mm would be very effective in relieving wrist and shoulder stress, but it actually is. I've used these for decades on various clip-on style bars. The beauty of this simple design is that they retain the original throttle/choke cables, brake and electrical lines. I can mount or remove these risers in less than ten minutes. They're produced from billet aluminum via CNC and anodized in silver.
Last year I realized that GenMar was no longer producing bar risers for the 1986-87 VFR700/750. So I contacted MOTO-CNC in the UK to inquire as to the possibility of producing these, as they already offer them for the later model VFRs. After some discussion I sent the company the pertinent measurements and agreed to purchase the first batch of ten as an incentive. I still have a limited number of sets on hand and am offering them for my cost of $100, shipping included to CONUS.