Piston Heads

Pistonheads provide the seal of the cylinder.
This is what creates the airpressure.

Pistonheads come in different types
Aluminium/metal Piston Heads: These Piston Heads are very durable.
Due to the heavier weight, they result in more sound, but also more stress on the gearbox.

Plastic Piston Heads: These Piston Heads are more commonly used.
Lightweight, strong and will damage the cylinder less than metal. It will also spare the gearbox a bit more.

Silent Piston Heads: These special Piston Heads have a shaped soft head.
This type of head results in a slightly quieter, but notably a more softer piston blow.
This reduces stress on the gearbox, and will result in a softer sound.
Caution! you need specially adapted Cylinder Heads for this!

Bore Up Piston Heads: These Piston Heads are specifically made for Bore Up Cylinders and Bore Up Cylinder Heads.