Just got a Mustang Regal Duke one-piece seat in . The rear passenger seat is a little narrower than the stock Harley Passenger seat, but has more padding on the top-end. I was getting complaints with the stock rear passenger pillion seat. So far - so good. I'm liking it pretty good. I've only gone on about an 1 1/2 hour long ride, but my girlfriend said it seems to be more comfortable even though it's a little narrower than the stock seat . I also tried a Mustang Wide Vintage Solo 1st, but prefered the stock seat - as it's a little narrower.