- Complete V2 gearbox
- Compatible with M4/AR-15 AEGs
- Quick change spring, ETU/MOSFET & high torque motor
If you have had a gearbox failure and you don't fancy opening it up, the CYMA Complete Version 2 Gearbox w/High Torque Motor & ETU is a pre-upgraded and pre-wired replacement which can be installed with minimal effort and no need to solder or open the gearbox shell. As always, we recommend you have some technical experience before installing a new gearbox, but when it comes to Airsoft upgrades this is about as easy as they get.
This gearbox set is designed for M4/AR-15 AEGs and has the correct nozzle length and selector plate for the task and is also pre-wired to a Deans connector so you can benefit from a lower resistance connector for increased electrical efficiency. Also included with the set is a CYMA high torque Neodymium magnet motor, providing a very snappy trigger response and the power to handle stronger springs than a standard motor.
The icing on the cake is the pre-installed MOSFET/ETU which prevents gearbox lock-up on semi-auto, provides further improvements to the trigger response and a boost to the rate of fire. If your M4 gearbox has issues or you want to freshen up an old M4 with a brand new and pre-upgraded gearbox this set would be a fantastic choice, avoiding the messing around and getting you back to shooting with minimal effort!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK Standard
£6.95
From
UK 24hr Dispatch
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
If your gearbox has gone kaput and you either don't have the time to fix it or you aren't technically inclined this drop-in replacement from CYMA could be the key to getting your gun working again. The Complete Version 2 Gearbox w/High Torque Motor & ETU comes fully built and pre-wired to a Deans battery connector, so if you aren't the type to get your hands dirty this set is perfect!
The gearbox shell is constructed from alloy and is reinforced at the front to reduce the chance that piston impacts will cause cracks to develop over time. At the rear, the gearbox shell is cut for a quick change spring system to allow for quick and easy power tuning without having to open the gearbox shell. The steel spring guide locks into place via 4 lugs for improved strength and can be removed quickly using a large flathead screwdriver.
Inside the gearbox itself, we are treated with a wide range of pre-installed upgrade parts, ranging from an aluminium silent piston and cylinder head, a polymer piston with a full rack of steel teeth, low friction 8mm steel ball bearing bushings to the pre-installed MOSFET/ETU. The ETU provides improved electrical efficiency, prevents the gearbox from locking up when the trigger is pulled too fast in semi-automatic and gives a boost in rate of fire over standard trigger contacts.
Also included in the set is a CYMA high torque motor which makes use of Neodymium magnets to more effectively pull stronger springs and further improve trigger response and cycle speed. The motor is the "long shaft" type; exactly what you need for an M4/AR-15 AEG. If your M4/AR-15 needs an internal overhaul or a performance boost and you don't fancy doing it the hard way, this drop-in gearbox set from CYMA is as easy as it gets!
Features
- Drop-in gearbox set - Pre-wired, ready to install
- Version 2 gearbox - M4/AR-15 nozzle and selector plate
- Alloy reinforced gearbox shell - Extra material at the front
- MOSFET/ETU Pre-installed - Better electrical efficiency, no semi lock-up
- Steel gearset and ARL
- Steel quick change spring guide - Tune the FPS quickly and easily
- Aluminium silent cylinder head and piston head
- Polymer piston with full steel tooth rack - Strong and lightweight
- Unknown strength spring pre-installed - Assume it is very hot (probably 400FPS+)
- Deans connector pre-wired - No need to break out the soldering iron
- High torque Neodymium magnet motor included
- CYMA Bolt catch actuation lever present - May need removing for some receivers
- Compatible with M4/AR-15 AEGs
- Great for those who CBA upgrading or repairing their gearbox
Package Includes
- CYMA Complete Version 2 Gearbox w/High Torque Motor & ETU
Special Instructions
The pre-installed spring in this gearbox will likely produce FPS in excess of UK legal limits. We recommend installing an M90, M100 or M105 spring before using this gearbox in a skirmish.
Specification
General
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Parts & Accessories Type
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Internal Parts
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|---|---|
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Internal Part Type
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Complete Gearbox, Motor,
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 |
 |
Weight and Dimension
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Approx. 0.784kg
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|---|
Construction
 |
Grey
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|---|---|
 |
Alloy shell, steel gears, aluminium piston head, aluminium cylinder head, polymer piston with steel tooth rack, polymer nozzle, polymer tappet plate, steel springs and steel spring guide
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|
Internal Part Construction
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Polymer, Alloy, Steel, Aluminium,
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Part Specific
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Part for Power Source Type
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Electric
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|---|---|
 |
|
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Package Includes
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Electric Part Specific
 |
V2 Gearbox
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|---|---|
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Gearbox Version Compatibility Variant
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Version 2
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Bearing Specific
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Spring Guide Bearings
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No
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|---|
Motor Specific
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High Torque
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|---|---|
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Motor Shaft Length
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Long
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Size guide
Parts Fitting
Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff.
Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.
We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!
Unique Parts
Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.
Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.
If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.
For more information with fitting parts, or should you require help, feel free to get in touch with our Workshop Department via our Contact Us Page.
Terms and Conditions relating to parts fitting can be read on our Terms and Conditions Page.