I've used KONI/IKON shocks for almost 40 years and presently have a pair on my 2004 Breva 750. My '21 Royal Enfield Interceptor 650 came with rather poor (I'm being kind) suspension, especially the shock absorbers. At 135#, I'm a bit shy of the mark for most shock absorbers to function at all, much less function well. I called Roger Kirwin, the US importer for IKON. Roger has a long history in motorcycling, having owned a dealership in UK for many years before migrating to Bedford, PA, USA and becoming the IKON distributor. I ordered a pair of IKON 7610 shocks for the Enfield, 20mm shorter (340mm) to give me a better chance to "flatfoot" at stops. That was no problem. I told Roger my weight and that I'd lightened the Enfield by over 30# and needed really light springing. Roger said the lightest IKON had was 11 Newtons of spring poundage. I bought these.
Trying them I found them better than OEM (no surprise) but still quite stiff. I told Roger that I'd keep them and just live with the bumps. Roger asked what poundage I'd like and I said "about 9.5 Newtons". Roger called Geoff at IKON's headquarters in Australia. Roger called back a few days later. "They've gotten some wire of the right gauge to make some 9.5 Newton springs and will get them here in a few weeks". They are on the bike now, at no charge and Roger even sent a pre-paid shipping label to return the 11N springs. The IKONs with the new, softer springs are excellent.
I expect that IKON is a pretty busy factory and for them to make me a one-off set of springs, and at no charge, is truly praise-worthy and that is the reason for this thread. Roger's phone # is (814) 592-7003, IKON USA has a nice website, too.