There's a difference between a 2020 R1250 GSA, which the OP specified, and your 2007 R1200GS. That's why Sargent urges the purchase of both seats for the 2017+ 12XX GSAs. Note that Sargent specifies GSAs as having the gap. There's no mention of a gap for the GS machines of the same model years. Here's the fine print from their website:Have the sergeant front and back, fit great. Had just the sergeant front and stock rear and they fit ok, no issues either.