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CYMA Sport Complete Ver II Gearbox w/ Quick Change Spring for M4 Series Airsoft AEG (Type: Front Wired / High Speed Motor)

ID: 18305 (GB-CYMA-Sport-MA009E)
5.0 stars, based on 1 reviews
CYMA Sport Complete Ver II Gearbox w/ Quick Change Spring for M4 Series Airsoft AEG (Type: Front Wired / High Speed Motor)
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This item is currently Sold Out

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.


  • Wired to the front
  • 8mm metal bushings
  • Quick change metal spring guide
  • Reinforced gearbox shell
  • Low resistance wiring
  • Compatible w/ standard Tokyo Marui spec version 2 gearbox parts and upgrades
  • Factory direct OEM replacement part
  • On-board electronic trigger

Manufacturer: CYMA


Spring: M120 (350~400 FPS)
Connector Type: Small Tamiya
Compatibility: Most Version 2 Airsoft AEGs
Material: Metal alloy, Low resistance wiring

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!

1 Customer Review

(Write a review)

by christian z. on 10/07/2020
"best gearbox for the price

internals. nicely shimmed 18:1 gear
m120 spring
quick spring change system that doesn't protrude out the back end of the gearbox like other brands
metal ball bearing spring guild
electronic trigger
motor has some nice torque far more than any high end gun which is a huge plus
redesigned for easy teching and is reinforced far better than any other gearbox
plastic piston head with 1 metal tooth piston...generic stock cheap part
plastic nozzle
ported cylinder
semi proprietary tappet plate...its just has the front sides shaved down to accommodate the thick reinforcement

replacing oring on the piston and nozzle with a internal o ring nozzle since there is little to no compression which is know to be a problem with cyma guns
wiring needs to be replaced

definitely recommend fr 55$ u are getting this thing for a steal , the trigger alone is worth the price

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This item is currently Sold Out. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.

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