Sportster Tracker Seat Tuck 'N Roll 59. Very cool and very sturdy Street / Dirt Tracker Seat. 

This seat will fit 1-on-1 on the '01-'03 Sportster. It comes with two mounting brackets made from stainless steel. Specially made to be installed without rear fender and can be installed without minor customization. 

Seat foam thickness: 30 mm
Material: ABS Plastic
Dimension: See the last picture.