For Sportster® Models from 1957 thru 1985. Dyno Power® drag pipes add both style and performance. These smooth bracketless pipes may be mounted with P -clamps or with the universal chrome exhaust mounting brackets listed below. Dyno Power drags accept baffles when quieter exhaust note is desired. 40 -long drag pipes mount using the universal drag pipe mounting brackets listed below. 1980 and later models require optional Brake Pedal Stop. Will not fit XLCR, 1979, or XR-1000 models.