The height of speed-humps in the UK varies, some are nice to go over and some are horrible even at slow speed. Lowing the height of a vehicle in the UK may not be a good idea. Do they have speed-humps in the US? < not ridden there and do not often go there so not sure
I like the cost of this mod (FREE!!!). I wouldn't do it on my PCX though, the suspension already bottoms out for me over some bumps. I can't imagine how easy it would be to bottom out with less spring. My city has a lot of potholes and I do a lot of curb hopping, so I can imagine this mod would work well for someone in a city with well-maintained roads.
Did you notice reduced cornering clearance? I removed my centerstand for more cornering clearance and to prevent the infamous crankcase break that only happens on the 2011 model, but I still rub my plastics from time to time. This would bring you closer to the ground, meaning less potential lean angle.
Currently ride: Nothing right now - mostly mountain biking with my boys until they're old enough to ride Previously rides: 2011 Honda PCX 125, 2005 V-Strom DL650, 1974 Vespa Ciao, 2011 Honda PCX 170 (tons of mods - takegawa 170cc big bore kit, gears, etc), 1996 Honda Nighthawk 250, 1987 Honda Spree, 2000 KTM 125SX, 2003 Honda Silverwing, 2007 Genuine Buddy 125, 1998 Honda PC800, 2008 Buddy 125 (white), 2008 Buddy 125 (red), 2001 Honda Reflex, 1987 Honda Elite, 1988 Honda Spree, 2007 Yamaha Vino, 2007 Honda Metro, 2x 125cc pure-chinesium dirt bikes