My K5 seat was a torture device for me - an hour at most before I had to stop and get off to let the blood flow again. It was ruining my fun so I got a Corbin seat (lardar*e special). funny thing is it's firmer but it spreads your load over a wider area. I think it might be a touch lower than standard too. Bit of a b*gger to fit as the mounting holes on the seat bracket don't line up with the holes on the bike too good. Anyway, my backside has never been so happy
