Sabelt - RUNNER GUIDE / SLIDERSliding tracks 230mm travel Recommended for any bottom mounted seat where adjusting the seat position is necessary. Features a double locking mechanism for increased safety. These sliders are not designed to fit side mount seats. The rails with the notches along the sides are the stationary bottom rails and are 15 1 2 long. The rails that mount to the seat are 12. 375 long.