SHS full bodied 15 tooth piston and piston head. The racks don't generally come fixed to the body so I recommend securing the rack with some expoy / glue for maximun strength. Rack is black.
Piston is made from aluminium and contains 8 vents. Comes with bearing.
Width (excluding rails): 19mm
Rail Width: 8mm
Total Width (including rails): 21.7mm