As the old saying goes, bigger is better. Well, in this case, longer! Take the already amazing Street Rail and crank up the pleasure with another four buttery feet. The Extension kit easily attaches and bolts on the either end of your current Street Rail and allows you to grind up to twelve solid feet. These features as well as the easy assembly/disassembly you've come to love provides you with even more grinding possibilities to bring your Street Rail skills to new heights.