Designed for high-speed builds, the TPAVN piston head combines a lightweight profile with minimal air recirculation inside the cylinder to maximize compression on advance and help the piston return cleanly on retraction. The padded sealing surface improves consistency while the ergal construction keeps mass low for faster cycles.

Technical specifications

Model: TPAVN — Ergal padded piston head (double or lightened variant for high speed).

Weight: 11.2 g.

Body material: machined ergal (aluminium alloy).

Purpose: maximize forward air compression and facilitate piston retraction to reduce power loss during rapid bursts.

Compatibility: Marui standard AEG compatible.

Origin: 100% Made in Italy.

Reference / SKU: 5158-4387.

Package contents

1 × FPS Ergal padded piston head TPAVN (weight as stated).

Label / SKU.

What you gain with this piston head
Better shot-to-shot consistency at high cyclic rates: stronger initial compression, faster piston reset and reduced energy loss — a compact upgrade for tuners seeking repeatable performance.

Warnings & usage information (GPSR compliant)

Do not tamper with, modify or adapt the piston head in any way: alterations may void safety and performance.

Ensure the replica is unloaded and all springs are de-tensioned before opening the gearbox; perform installation following correct procedures or have it fitted by qualified personnel.

Use proper tools and torque settings; avoid deforming the padded surface or mating threads.

Check dimensional compatibility with your piston, cylinder head and seals; incorrect fitment can cause malfunctions or energy loss.

Conduct functional checks and low-power tests after installation before normal operation.

Avoid prolonged exposure to aggressive solvents or excessive humidity; store in a dry place.

Dispose of packaging and metal components according to local regulations.