Specna Arms Bearing Sealed CNC Aluminium Piston Head 8 Holes



The Specna Arms Bearing Sealed CNC Aluminium Piston Head 8 Holes is a high-quality CNC-machined piston head designed to ensure an optimal air seal and smooth operation of the gearbox. Thanks to its integrated ball bearing construction, 8 ventilation holes and construction from high-quality aluminium, this piston head is an excellent upgrade for AEG replicas.
The piston head is manufactured entirely within the European Union and is suitable for both Specna Arms replicas and various compatible AEG platforms.
Ventilated design with 8 openings
The piston head features 8 ventilation holes which ensure that the sealing ring expands optimally against the cylinder wall during the compression stroke. This results in better airtightness and more efficient air compression.
This helps to ensure consistent performance of the replica.
Integrated ball bearing
The integrated ball bearing assembly ensures that the main spring can rotate freely whilst being compressed and released. This reduces torsion in the spring, making the gearbox operate more smoothly and helping to minimise the load on internal components.
This helps to extend the service life of the powertrain.
CNC-machined aluminium
The piston head is made from high-quality CNC-machined aluminium, ensuring a precise fit, low weight and high wear resistance.
Weighing approximately 10 grams, the moving mass is kept to a minimum without compromising on durability.
Practical insights
A piston head with ventilation holes and a ball bearing is widely used in upgrade builds where good compression and smooth operation of the main spring are important. The combination of a precision CNC finish and a ventilated seal makes this piston head suitable for both standard and upgraded AEGs.
Who is the Specna Arms Bearing Sealed CNC Aluminium Piston Head suitable for?
The Specna Arms Bearing Sealed CNC Aluminium Piston Head 8 Holes is suitable for airsoft players who wish to fit their gearbox with a durable piston head offering improved airtightness and a ball bearing for more efficient operation of the main spring. The piston head has been developed for the Specna Arms C/F/E/E2.0 series, but is also compatible with various other AEG replicas.
Key features
- Genuine Specna Arms product
- CNC-machined aluminium piston head
- Integrated ball bearing
- Ventilated design with 8 openings
- Improved airtightness
- Efficient air compression
- Reduces torsion of the main spring
- High dimensional accuracy
- Manufactured in the European Union
- Suitable for Specna Arms C/F/E/E2.0 series
- Also compatible with various other AEG replicas
- Colour: Black
- Dimensions: 2.34 × 2.34 × 1.87 cm
- Weight: approximately 10 grams
Common mistakes
- Check in advance whether the piston head is compatible with your piston and gearbox.
- During assembly, check the condition of the O-ring and, if necessary, apply a light coating of lubricant to ensure an optimal seal.
Frequently Asked Questions
What material is this piston head made of?
The piston head is made from CNC-machined aluminium.
What is the advantage of the 8 ventilation holes?
These ensure that the O-ring seals more effectively during the compression stroke, resulting in better airtightness.
What is the purpose of the ball bearing?
The ball bearing allows the main spring to rotate freely, thereby reducing torsion and ensuring the gearbox runs more smoothly.
Which replicas is this piston head suitable for?
The piston head has been designed for the Specna Arms C/F/E/E2.0 series, but also fits various other compatible AEG replicas.
Where is this piston head manufactured?
This piston head is manufactured entirely within the European Union.
Improve the compression and durability of your gearbox with the Specna Arms Bearing Sealed CNC Aluminium Piston Head 8 Holes, a high-quality CNC upgrade featuring a ball bearing and a ventilated design for optimum performance.

Product specifications
- Article number
- SPE-08-038715
- Weight unpackaged
- 10 gr
- Brand
- Specna Arms
- Type
- Bearing Sealed CNC Aluminium Piston Head 8 Holes
















