I have a Solo Touring gell seat and matching bolt-on gell pillion (passenger) seat. I will sell them both for 1/2 of new ($185) plus shipping (probably around $45 USPS ground).
They fit 2008 and newer R3 Standards for sure, and from what else I see, some '07's and the new Roadsters as well. They are for the versions that use the ignition key in the right side cover to release the cable actuated latch on the frame under the rider seat where the seat mounted pin engages. The pillion bolts under the rider seat to the fender utilizing the three bolt mounting plate.
Both seats are perfect and look new (1yr old). I also have the matching gell sissy bar back, but I'm using that. However, if someone had the regular one to trade, we could make that part of the "package" too.
If someone is serious, I can unpack the rider and pillion for photos... but you better be serious, they are well packed. LOL
dache, it's not that kind of gell. So it won't leak or get hard in the cold. They are just as durable as the stock versions, in fact they have better side panels than stockers.