THESE SEATS ARE FACTORY PREDRILLED FOR MOUNTING ARM RESTS, IF YOUR SEAT CURRENTLY HAS ARM RESTS YOU JUST TRANSFER THE RESTS TO THIS NEW SEAT ALONG WITH THE SEAT TRACKS THAT YOU CURRENTLY HAVE. THE TWO MOUNTING HOLES THAT ARE CLOSEST TO THE FRONT OF THE SEAT ARE ARE 11.25 INCHES FROM CENTER TO CENTER. THE HOLES ON THE SIDES OF THE SEAT ARE 11.5 INCHES FROM THE TWO OTHER MOUNTING HOLES. PARTS TREE DOT COM PRICE IS. IF YOU ARE NOT SURE IF IT FITS YOUR MACHINE, CONTACT ME BEFORE ORDERING.