Serpent 500902 13mm 2 hole 1.7mm Shock Piston for RC Dampers  [SER500902]

13mm shock piston for RC dampers

This is a Serpent 500902 shock piston intended for RC-scale dampers, specified as a 13mm bore piston with two 1.7mm ports. It is a replacement piston element that controls oil flow through the shock, and is used where finer incremental changes to compression and rebound are required during setup.

Installation: this piston installs inside compatible shock shafts and bodies that accept a 13mm piston bore, sitting between the shock shaft and the piston head as part of the internal flow path. When fitting, ensure the piston orientation and hole alignment match your desired flow characteristics, and check that the piston moves freely on the shaft without binding.

Tuning role: the 2 hole, 1.7mm configuration increases available flow area compared with single smaller ports, so it alters both compression and rebound damping behavior. Use it to balance oil viscosity, shim stacks, and spring rate to reach the handling feel you aim for, whether adjusting for traction or responsiveness.

Use this piston when you need moderate flow capacity for smoother mid-speed damping transitions, and always test changes on-track to confirm their effect on your setup.