All—
I've found that ordering a Trophy seat from US Triumph is a little harder then I imagined it would be. There are up to eleven different seats available from Triumph. Part numbers that are readily available in Europe are not common in the US. Here is a list of Triumph seats and the US part numbers I have (Note, be sure to check if the part number has been superseded before ordering).
Standard seat (stock in Europe) – part number T2305020.
Passenger seat (stock in Europe and the US) – part number
Standard seat, heated – part number A9708259.
Passenger seat (stock in Europe and the US) – part number A9708260.
Comfort seat – part number T2308262.
Comfort passenger seat – part number T2308266
Comfort seat, heated – part number
Low Gel seat – part number
Low Gel seat, heated – part number
Low rider seat – part number T2308261.
Low rider seat, heated – part number A9708276.
Feel free to add and edit this list as necessary,
--John