These Schumacher Racing Products big bore shock pistons are designed for use with big bore shock absorbers across compatible Schumacher 1:10 platforms. Each piston features a 2-hole configuration and a 1.70mm hole diameter, which controls damping fluid flow and directly affects shock response tuning. Sold as a pair in red for easy identification when mixing piston configurations across your build. Features: 2-hole piston design for damping fluid flow control 1.70mm hole diameter Big bore shock compatible Red color for easy tuning identification Sold as a pair 7/7/26 cs