Contact Us Tel:(626) 286-0360 Store Locations
Phone Support Hours M-F 7am-7pm PST
Browse by Type or Category
Happy President's Day! Use code PDAY2019 for 20% off! (Sale/MAP items exempt, click for Details)

Complete Ver III AK Gearbox with Torque Motor for AK Series Airsoft AEG by JG / CYMA

ID: 29163 (GB-CM02-Motor)
4.7 stars, based on 3 reviews
Complete Ver III AK Gearbox with Torque Motor for AK Series Airsoft AEG by JG / CYMA
Hover or touch above to zoom
Gearbox may come in black or silver colored shell
Product image 1 Product image 2 Product image 3 Product image 4

$60.00 $51.00

MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.


  • Reinforced metal gearbox
  • Compatible w/ standard Tokyo Marui spec version 3 gearbox parts and upgrades
  • M120 spring and torque up motor installed
  • Usable with G36 / MK36 Airsoft guns by swapping out trigger assembly
  • Factory direct OEM replacement part
Complete Gearbox Disclaimer:
We have compiled a series of videos for AEG take down, assembly and gearbox for your reference. Recommended for experienced players only. A "gearbox" virtually never breaks, offers spare parts for all components. All gearboxes are sold as complete set of parts and "AS IS". All the gearbox are directly from manufacture. Buyer responsible for fine tuning and proper installation. is not responsible for shimming it perfectly or playing the game of airsoft for you.
For more information on complete gearboxes, please visit: Complete AEG Gearbox

Spring: M120 (350~400 FPS)
Compatibility: Designed for Tokyo Marui, ICS, Classic Army, Matrix, G&G, G&P, DE, AGM, DBOY, CYMA, Echo1, WELL, SRC and other compatible gearbox.
Complete Gearbox includes: Motor, Motor Housing, Cylinder, Cylinder Head, Piston, Piston Head, Bushing, Trigger Assembling, Wiring, Switch Assembly, and everything else in the gearbox to make it work

Manufacturer: CYMA / JG

About CYMA

CYMA is among the oldest, most experienced and the largest Airsoft manufacturing facility in the world. Known for their unmatched quality control and professionalism, CYMA is selected to be the OEM of a vast amount of Airsoft products. Durability and performance meets affordability!

About JG / ASP / GE

JG / Jing Gong (China) / ASP (Hong Kong) is among the world's largest Airsoft OEM (Original Equipment Manufacturer) and pioneer for high quality Airsoft AEG rifles. With superb production capability, volume, and their close relationship positioned JG to provide the world market with great reliable products.

3 Customer Reviews

(Write a review)

by James G. on 03/17/2011
"installed it over a year ago and still shootin stong. stock gearbox cracked and a new gearbox shell cost almost as much as this. shoots great, good price, and hasnt broken anything internally.

only problems i had were that i had to use the wiring from the old gearbox due to battery placement (not the gearboxs fualt) and sometimes the selector lever gets messed up and randomly refuses to shoot when trigger is pulled (which the old gearbox and my other AK also does randomly)
by Grazia W. on 01/05/2011
"This gear box is amazing
Amazingly fast fire rate!
an all metal parts

Was a lille tricky fitting in my cyma ak that had a abs gb

Other then that i use a 9.6 4000mah Wired to the side of my stock this gb is amazing
by Adam J. on 12/27/2010
"I bought this as a replacement for a Dboys RK-03. Jammed, screwed up the internals, we took apart and put it back together, and it was never the same... by that I mean it fired about 10 feet on a good day.

Honestly, I was impressed with the quality/price ration here. Installation took less than five minutes. FPS was decent, somewhere around the 370-380 range with .2's (though I haven't chrono'd, so I can't be sure, but shoots out to about 80 feet accurate, 120 foot hits in short bursts). Build quality isn't bad at all, though the motor is a bit ugly sounding even when aligned correctly. However the gearbox itself sounds just fine, runs smoothly, great ROF with a 9.6 1600 battery.

Overall, for 60 dollars, this is a steal. If your AK is dead, and you need a quick fix, this will work just fine as a temporary, or for low end guns permanent solution. Though, I wouldn't suggest you buy this and assume you have some uber gun, because for 60 dollars you get what you pay for... it's good but it sure isn't a KWA or a Systema. It works, and for the price works very well, and that's all I ask of it.

Questions, Answers and Comments

Discuss about Complete Ver III AK Gearbox with Torque Motor for AK Series Airsoft AEG by JG / CYMA with your friends and fellow shoppers!

Comment or answer questions for a chance to win awesome prizes. Details can be found on the Facebook page. Remember to check "Also post on Facebook" when commenting to qualify for the giveaways!

Have an urgent question about this item? We monitor these comments daily, but it may be faster to email us directly or call us at (626) 286-0360. Our resident experts are standing by to answer your questions!

California Proposition 65 Warning: Cancer and Reproductive Harm -