The seat was on there when I bought it but it has a makers mark on the rear and its made by these people:
http://www.topsellerie.com/@EN-FR/kawasaki-gtr-1400-2007_451.htmlThey seem to do standard/lowered and also longer seats for the GTR in various trims. French company. I can vouch for the comfort of the seat and quality, although I dont know what the orginal one was like. Its making me think now if the seat thats on there is a lowered one?
**EDIT: After wondering if i have a modified seat i went and took a closer look at mine. No specific model numbers on the seat but the one from the link below matches mine perfectly. Seems like it may be standard height but Gel front and Back. Unless the previous owner chose that seat then took the standard options back off which i doubt as no expense was really spared on this bike. Ive owned for a year, its a 1 owner bike before me, 55k miles now but has 2 full service books from new every 3k from Kawasaki dealer he bought it from and also he bought the extended 3 year warranty. All miles done in central London. Even have the receipt for the Scorpion Exhaust from the day he collected the bike new too. Oh and Kawasaki Top box. She's a beut.
http://www.topsellerie.com/@EN-FR/deluxe-seat-SGC4723-kawasaki-gtr-1400-2007_451.html