These Associated factory replacement 12mm V2 shock pistons feature a 2mm center hole and two 1.5mm holes for tuning damping characteristics on compatible Associated platforms. The V2 designation identifies the updated piston design. Sold as a set of four pistons. Features: 12mm diameter V2 piston design 2mm center hole with two 1.5mm holes Set of four pistons Direct Associated factory replacement 7/7/26 cs