SHS ALUMINUM BORE-UP CYLINDER HEAD & SILENT PISTON HEAD FOR VERSION 2 AIRSOFT AEG GEARBOXES

CNC Aluminum • Bore-Up Compression System • Improved Airflow • Silent Piston Head • Version 2 Compatible

BORE-UP COMPRESSION // IMPROVED AIR VOLUME // CNC ALUMINUM // SILENT PISTON HEAD // V2 AEG UPGRADE

Upgrade the compression system of your compatible Version 2 AEG with the SHS Airsoft Aluminum Bore-Up Cylinder Head with Silent Bore-Up Piston Head.

Designed for compatible Tokyo Marui, Matrix, and other Version 2 Airsoft AEG gearboxes, this compression upgrade combines a precision CNC-machined aluminum bore-up cylinder head with a bore-up silent piston head, using aluminum, rubber, and polycarbonate materials to create a performance-oriented internal package.

Unlike standard-diameter compression components, a bore-up airsoft system uses larger internal dimensions to increase available air volume for each shot. This makes bore-up components particularly relevant to properly configured AEG builds where increased cylinder air volume is required.

The important part: bore-up components are designed as a system. This cylinder and piston head set must be matched with other compatible bore-up internal parts.

01 // BORE-UP COMPRESSION SYSTEM

The defining feature of this SHS set is its bore-up architecture.

A bore-up system increases the internal diameter of compatible compression components, allowing the cylinder assembly to move a greater volume of air during the firing cycle.

In an appropriately configured AEG, increased air volume can be useful when building around specific barrel volumes and performance requirements.

However, bore-up doesn’t automatically mean “more FPS” or “better performance.”

Correct air-volume matching is essential.

The compression components, cylinder, nozzle system, barrel configuration, spring, and air seal all need to work together as a properly balanced system.

02 // CNC ALUMINUM CYLINDER HEAD

SHS manufactures the cylinder head using precision CNC-machined aluminum.

The cylinder head is an important part of an AEG’s compression system because it helps seal the front of the cylinder and directs compressed air toward the air nozzle.

Precision machining helps maintain consistent dimensions and proper component alignment.

Aluminum construction also provides a rigid and durable foundation for the compression assembly, making this an attractive replacement or upgrade for compatible performance builds.

03 // BORE-UP CYLINDER HEAD

This is specifically a bore-up cylinder head, meaning its dimensions are intended to work with a compatible larger-diameter bore-up compression system.

It should not be treated as a direct replacement for every standard AEG cylinder head.

When matched with the correct components, the increased internal dimensions allow the system to take advantage of the additional air volume generated by the bore-up cylinder configuration.

For technicians building a complete bore-up gearbox, using correctly matched components is critical for maintaining an effective air seal.

04 // BORE-UP PISTON HEAD

The package also includes a matching bore-up piston head.

Because a bore-up cylinder uses different internal dimensions from a standard compression system, the piston head must be correctly sized to create an effective seal.

The piston head works together with the appropriate O-ring and cylinder to compress air as the piston moves forward during the firing cycle.

A properly functioning piston head can contribute to consistent compression and repeatable performance.

This matching SHS component makes it easier to build the cylinder head and piston side of a compatible bore-up system.

05 // IMPROVED AIRFLOW

SHS designs the system around improved airflow through the compression assembly.

Efficient airflow matters because the compressed air generated inside the cylinder must travel through the cylinder head and nozzle before propelling the BB.

Restrictions, leaks, or poorly matched components can reduce the effectiveness of the compression system.

By combining bore-up dimensions with a purpose-built cylinder head and piston head, SHS provides a foundation for technicians looking to optimize airflow within a correctly configured Version 2 gearbox.

06 // SILENT PISTON HEAD DESIGN

The included piston head incorporates a silent-style design.

Silent piston and cylinder head systems typically use shaped contact surfaces and cushioning materials to help soften the mechanical impact at the end of the piston stroke.

This can help alter the mechanical sound signature of the gearbox compared with some conventional flat-head configurations.

It’s important to keep expectations realistic: an AEG contains a motor, gears, piston, spring, and other moving components, so a “silent” piston head will not make the rifle completely silent.

Instead, it is designed to reduce or soften part of the mechanical impact within the compression cycle.

07 // VERSION 2 GEARBOX COMPATIBILITY

The SHS Bore-Up Cylinder Head and Silent Piston Head Set is designed for compatible Version 2 Airsoft AEG gearboxes, including listed compatibility with:

Tokyo Marui
Matrix
Other compatible Version 2 AEG platforms

Version 2 is one of the most common gearbox architectures in airsoft and is frequently found in M4 / M16-style AEGs.

However, gearbox specifications and aftermarket components can vary between manufacturers.

Always confirm fitment before installation.

WHY CHOOSE THE SHS BORE-UP COMPRESSION SET?

✓ BORE-UP DESIGN

Larger internal dimensions support increased cylinder air volume.

✓ CNC ALUMINUM CYLINDER HEAD

Precision-machined construction provides a durable compression component.

✓ MATCHING BORE-UP PISTON HEAD

Designed to work as part of a compatible bore-up compression system.

✓ IMPROVED AIRFLOW

Purpose-built geometry supports efficient movement of compressed air.

✓ SILENT-STYLE DESIGN

Helps soften part of the piston impact during gearbox operation.

✓ VERSION 2 COMPATIBILITY

Designed for Tokyo Marui, Matrix, and other compatible V2 gearboxes.

✓ SHS UPGRADE COMPONENT

A practical option for technicians building a properly matched bore-up AEG.

IMPORTANT // BORE-UP PARTS MUST BE MATCHED

Bore-up components should not be mixed randomly with standard compression parts.

Because the internal diameters differ, the cylinder, piston head, cylinder head, nozzle-related components, and sealing surfaces must be appropriately matched.

Incorrect combinations can result in poor compression, air leaks, abnormal wear, or improper gearbox operation.

If you’re unfamiliar with bore-up AEG systems, professional airsoft technician installation is recommended.

TECH NOTE // MORE AIR ISN’T ALWAYS BETTER

A well-tuned AEG depends on balanced air volume, not simply the largest possible cylinder volume.

The correct compression setup depends heavily on inner-barrel dimensions, BB weight, desired performance, and the rest of the gearbox configuration.

A properly matched standard-volume system may outperform a poorly configured bore-up setup.

The SHS Bore-Up Cylinder Head and Piston Head are best used as part of a complete, carefully selected compression build rather than as isolated upgrades.

FINAL WORD // BUILD A PROPER BORE-UP V2 COMPRESSION SYSTEM

The SHS Airsoft Aluminum Bore-Up Cylinder Head with Silent Bore-Up Piston Head for Version 2 Airsoft AEGs gives experienced builders a strong foundation for a higher-volume compression setup.

Combining a precision CNC aluminum cylinder head, matching bore-up piston head, improved airflow, silent-style impact design, and compatibility with many Tokyo Marui, Matrix, and other Version 2 gearboxes, this set is designed for AEG builds where properly matched increased air volume is the goal.

Pair it with the correct bore-up components, tune the complete compression system, and build around balance rather than simply chasing numbers.

SHS BORE-UP // V2 COMPATIBLE // CNC ALUMINUM // HIGH-VOLUME COMPRESSION