These Associated factory replacement 16mm shock pistons feature a 5-hole flat design with 1.3mm ports, intended for use with 16mm shocks across a wide range of 1:8 scale vehicles. Sold as a set of four metal pistons, they are a direct replacement for worn or damaged originals. The flat piston style affects damping characteristics, making correct hole size selection important when rebuilding shocks. Features: 16mm diameter flat shock pistons 5-hole design with 1.3mm ports Set of four pistons Compatible with a wide range of 1:8 scale platforms 7/7/26 cs