These Associated Factory Team 13mm shock pistons are a factory replacement designed for Associated 1:10 competition vehicles running 13mm shocks. Each piston features a 2x1.6mm hole configuration on a 2.5mm thick disc, giving tuners a consistent and repeatable damping setup. Sold as a pair. Features: 13mm diameter piston 2.5mm piston thickness 2x1.6mm hole configuration Sold as a pair Factory Team specification 7/7/26 cs