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

Shock piston, 13mm bore with dual 1.7mm ports

The Serpent 500902 piston is built for 13mm bore RC dampers and features two 1.7mm ports for controlled oil movement. As a replacement piston it manages internal flow to support smaller step changes in compression and rebound tuning.

Installation: this piston fits into shock shafts and bodies made for a 13mm bore, locating between the shaft and piston head within the shock stack. During installation, check port orientation and hole alignment to get the flow profile you expect and confirm smooth shaft sliding with no binding.

Tuning role: with two 1.7mm ports the available flow area is larger than many single-port options, which alters damping characteristics across compression and rebound. Pair the piston with appropriate oil weight, shim configuration, and spring rates to refine handling balance.

Opt for this piston when you want controlled mid-range flow for consistent damping transitions, and validate setup changes through on-track testing.