BTC Chimera Mk.III FET for V2 Gearbox
BTC Chimera Mk.III FET for V2 Gearbox BTC Chimera Mk.III FET for V2 Gearbox BTC Chimera Mk.III FET for V2 Gearbox BTC Chimera Mk.III FET for V2 Gearbox BTC Chimera Mk.III FET for V2 Gearbox


In Stock

Products Description

NOTICE: This item is currently sold out, and it could be up to a few months before we receive a restock. Feel free to still order this if you like as a pre-order, but do note we do not have an ETA on when they will be back in stock. If you really want one, pre-ordering is your best bet because these sell out quickly, and we are limited to only 5 units when the next batch is available.

Built upon the indestructable Extreme-fire Lion, wired to a gearbox sensor array like the Systema PTW, and programmed to have more functions then any other controller on the market. Combine all this and you have the Chimera FET, an extremely powerful AEG controller with thousands of possible configurations. No soldering required!


Advanced Technology
  • Can handle power surges up to 9000 watts and even run on car batteries!
  • Fully computerized and driven by a high speed PIC18F14K22 microprocessor.
  • Multiple internal layers of heavy copper traces for greater current capacity.
  • Short circuit detection and voltage spike suppression circuits to protect the controller.
  • Smart thermal management allows the controller to remain cool under sustained firing.

MOSFET Trigger
  • Eliminates damaging electrical arcing of the trigger switch contacts.
  • Lower resistance compared to mechanical switching, increasing motor current.
  • Driven by a IRLS3034-7PPBF, the world's most powerful D2PAK-style MOSFET!

Dynamic Braking
  • Eliminates the motor spin-down time to prevent the piston from over-traveling.
  • Assists in keeping the piston properly reset to reduce stress on the gearbox.
  • Prevents double firing on semi-fire in extremely high RoF setups.
  • Also driven by the powerful IRLS3034-7PPBF MOSFET!

Cycle Completion
  • Gearbox always completes the last cycle regardless of when the trigger is released.
  • Assists in keeping the piston properly reset to reduce stress on the gearbox.
  • The motor will always have the smoothest and most consistent startup.
  • Allows the anti-reversal latch to be removed.

Fully Configurable Fire Select
  • Both fire select positions can be individually configured, for a total of 64 possible configurations.
  • Available options for each selector position:
    • Semi fire
    • Auto fire
    • 2 round burst
    • 3 round burst
    • 4 round burst
    • 5 round burst
    • Semi with ramping
    • Burst-auto hybrid
  • "Semi w/ Ramping" fires in semi and switches to full auto if the trigger is rapidly tapped.
  • "Burst-auto hybrid" fires in burst and switches to full auto if the trigger remains held down.
  • Can convert any AEG to semi-only by having both selector positions set to semi fire.

Realistic RoF Control
  • Both fire select positions can be individually configured with a different RoF.
  • Every cycle runs at full speed and pauses between each shot to reduce the RoF.
  • Provides the most realistic feel and sound compared to any other forms of RoF reduction.

Adjustable Precocking
  • Precocking stops the piston in a compressed state so the next shot is near-instantaneous.
  • The precocking is fully adjustable and thus also compatible with short-stroked pistons.
  • Offers improved realism and trigger response for sniper or low RoF builds.

LiPo / LiFePO4 Monitoring

  • Monitors LiPo and LiFePO4 batteries to cutoff power before overdischarge occurs.
  • Simply set the number of cells and the controller will use the proper cutoff voltage.

Programmable Digital Fuse

  • Sensor-based current monitoring negates the need for a physical fuse.
  • Cutoff threshold fully adjustable to help protect low-output batteries from over-current damage.

Gearbox Reliability

  • Eliminates the trigger jam normally caused by the cutoff lever stopping at a certain position.
  • The cutoff lever mechanism is no longer needed, greatly reducing the chances of semi-fire related issues.
  • The anti-reversal latch can also be removed to make gearbox reassembly much easier.


Electrical Ratings

Supply Voltage

Motor Current60500A

FET Resistance

Board Size1.90.60.5inch

Gauge & TypeLength
Battery Wires16AWG Teflon(PTFE)16inch
Motor Wires16AWG Ecowire(mPPE)20inch
Data Wires28AWG Ribbon16inch

Included Items
  • Chimera Mk.II FET
  • V2 Gearbox Trigger Board Mk.II
  • Data Cables (1x spare cable included)
  • Motor Wiring (16AWG mPPE/Ecowire)
  • Deans Wiring (16AWG mPPE/Ecowire)
  • Tamiya Wiring (16AWG mPPE/Ecowire)
  • User Manual


Chimera Mk.II (V2 GB) Manual

Chimera Mk.I (V2 GB) Manual
(Previous Version, Discontinued)


Which GBs are incompatible or require heavy modifications to install the Chimera?

The TM G3 gearbox is not compatible with the Chimera at the moment. V2 gearboxes with proprietary selector plates may require modifications to properly engage the fire select switches.

Can the trigger board fit in ICS split gearboxes?

Yes, it is compatible with ICS split gearboxes.

Are there any other parts I should buy along with the Chimera?

No, all the items you'll need is included with the Chimera. No need to buy additional wires or connectors.

How do I know if the Chimera can fit in my AEG?

If your AEG has enough room for a cylindrical fuse box then you can swap it out and install the Chimera in its place. Otherwise use an AA-size battery as reference and see if it can fit somewhere in your AEG.

Is the trigger board compatible with both front and rear wiring?

Yes, it is designed to be compatible with any wiring direction.

How durable are the included wires?

The included motor/gearbox wires are Ecowire(mPPE) insulated, which is MUCH tougher than the more common PVC and silicone wires, just as thin as Teflon(PTFE) wires, and also very flexible. This reduces the likelihood of wires being torn in the gearbox, allows 16AWG wiring to easily fit in the gearbox, and the flexibility makes it easier to manage.

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