I am running RCI 5-point for $69.88 from Summit.
![Big Thumb Up :biggthumpup:](https://board.marlincrawler.com/Smileys/marlin/biggthumpup.gif)
I think that the crotch belt keeps the seatbelts in place and shoulder straps/buckle from riding up.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=RCI%2D9210D&N=700+4294925234+4294839020+400379+115&autoview=sku