Cyma Complete V2 M4 Gearbox QD with High Speed Motor

The Cyma Complete V2 M4 Gearbox QD with High Speed Motor is a fully pre-assembled V2 gearbox, ready for immediate installation in compatible M4 AEG replicas. This complete unit is designed as a reliable replacement or upgrade option for players who wish to update their internal setup quickly and efficiently, without having to assemble individual components.

Materials and fastenings

The gearbox shell is made of metal and fitted with 8 mm bearings to ensure smooth and stable rotation of the gears. Internally, the gearbox is equipped with steel gears, a polymer piston with a full-steel rack, a piston head and a silent aluminium cylinder.

The cylinder is made from anodised aluminium, ensuring durability and efficient heat dissipation during prolonged use. The unit is rear-wired and features a Quick Detach spring system, allowing the spring to be easily replaced without dismantling the entire gearbox.

Usage and compatibility

The Cyma Complete V2 M4 Gearbox QD with High Speed Motor is compatible with the Tokyo Marui M4 AEG series and similar M4 platforms that use a V2 gearbox. Thanks to the Quick Spring Change system, the spring can be quickly adjusted to suit field limits or playing style.

The set comes with a powerful high-speed motor featuring neodymium magnets. This motor offers a fast trigger response and increased rotational speed, contributing to a higher rate of fire and instantaneous response.

With a factory setting of around 340 fps, this gearbox is suitable for standard field use, depending on the spring chosen and local regulations.

Key features

• Complete V2 gearbox, ready for installation
• Quick-detach spring system
• Steel gears
• Polymer piston with full steel rack
• Anodised aluminium cylinder
• 8 mm bearings
• Includes high-speed motor with neodymium magnets
• Rear-wired version
• Weight approx. 720 g

Safety and recommendations

Installation must be carried out by an experienced technician or a user familiar with AEG systems. Check compatibility with your specific M4 platform before fitting. Test the replica after installation without BBs to ensure it is functioning correctly. Adjust the spring to comply with the applicable field limits.

Why choose the Cyma Complete V2 M4 Gearbox QD with High Speed Motor?

The Cyma Complete V2 M4 Gearbox QD with High Speed Motor offers a quick, reliable solution for anyone looking to upgrade or repair their M4 AEG without a complex internal build. Thanks to the QD system, steel internal components and powerful neodymium motor, this provides an efficient and robust foundation for a durable M4 setup.

Frequently Asked Questions

Is this gearbox ready for installation straight away?
Yes, the gearbox is fully assembled and ready for installation.

Which replicas is this compatible with?
Compatible with the Tokyo Marui M4 AEG series and similar V2 M4 platforms.

Does this have a quick spring change system?
Yes, the QD system allows for quick spring changes without having to take the whole unit apart.

With the Cyma Complete V2 M4 Gearbox QD with High Speed Motor, you’re choosing a complete, powerful and ready-to-use internal upgrade for your M4 AEG.