Seats are like fenders.  Fenders come in different shapes to fit the different model cars.  Likewise a Solo seat might look a little different from the shown pictures in order to accommodate your particular bike model and year.  The seat has to be the right width for your frame, and have the right slope up to the back fender.   Also, a lot of custom bikes have stretch tanks, and back fenders that not only are wider, but also with a different arch shape.   Which means the stock seat will no longer fit the bike.   We will show you many ideas and answers regarding your seat application.  Do not hesitate to contact us with your questions.