I'm posting this because I seem to recall someone was asking for a recommendation on 1" risers. I just received my Motone 1" Handlebar Risers-Silver and installed them. Test ride is good and they do allow me to sit more upright, which will reduce upper back/neck strain from a previous mc accident. (bouncing off head is bad).
As for installation: The holes are close to aligning, but require some reaming for proper fitting. I used a drillbit in my vise and it was very easy. The material is billet Aluminum, so it the drill bit will clean it out very easily.
The upper and lower rounded parts fit perfectly and allow for a tight gripping of the handlebars. The perimeter of the riser is more oblong shaped and will not align perfectly with the OEM handlebar riser - this aspect is purely cosmetic and doesn't affect the performance or safety.
They call the finish silver, but it's simply a matte unfinished aluminum. I guess it'd be possible to buff it to a shine? I didn't try.
I bought mine from
https://bellacorse.com/shop/motone-1-handlebar-risers/ for $49.99 plus shipping. These do come from UK, so if they don't have in stock then it might be a wait. Mine also came with a UK Union Jack flag... ironic.
Hope this helps whomever was asking. Sorry I can't recall the OP and searches didn't show.