These Associated Factory Team shock pistons are designed as a direct replacement for 13mm shocks across Associated RC-10 B-series and T-series platforms. Each piston measures 13mm in diameter with 2.5mm holes in a 2x1.8 configuration, providing a specific damping bleed rate for tuning shock response. Sold as a pair of white pistons. Features: 13mm diameter piston 2.5mm holes in 2x1.8 configuration Sold as a pair Factory Team replacement part 7/7/26 cs