I just recently lowered mine 3/4" in the rear with the KB links and 5/8" in the front. Surprised me how much lower it made the bike feel when stopping on uneven surfaces. I've found no negative effect and it doesn't make even a significant difference on getting it onto the center stand which I think the Strom is the easiest bike I have ever had to get onto one. I had resisted lowering the rear due to concern over hitting the SWM center stand on my Gap commute and I have taken a couple of rides over with no scrapes yet but........I do not push it anywhere near as far as when I was young and more foolish..and healed faster.
Anything over an inch lower in the rear would be pushing it too far in my opinion.
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