Low Down Seat Rail Civic FG4 Left Driver Axle Set A small reverse cone is

A small reverse cone is placed at the very end to provide a tiny bit of wanted back pressure

What does this mean

Custom brackets can also be provided for application specific fitment

PLM Engine Oil Sump Pan Vehicle Fitment:

Low Down Seat Rail Civic FG4 Left Driver Axle Set A small reverse cone isPLM Private Label Mfg. low down rails fit all side mounted (fixed back) racing seats to give the lowest driving position possible without compromising your safety. Made of high quality, high strength steel built for superior stability, these rails offer the best bang for your buck. You can now convert this type of side mounted seat rail for bottom mounted with our bottom mount adapters. Dual locking universal sliders. Pair of seat rail (seat slider)