I have fitted a lowering kit from Soupy's in the US (and there are various other threads about it).
I had a K1300s with seat height of 820mm and hoped the lower XR seat would feel the same. However, a combination of wider seat and pegs located just where your feet want to plant made it a bit precarious for me (30" inside leg). The Soupy's key is adjustable and I have lowered the rear and front (lowered yokes) by about 20mm. I feels great, lowers the centre of gravity of the bike and I haven't touched the pegs down yet even though they are that much lower.