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Modify Quantum Double Cycle Gear Set

ID: 64225 (Gear-Mod-Quantunset)
Modify859188642256MOD GS QUANTUM DSG (96100)64225
4.5 stars, based on 2 reviews
Modify Quantum Double Cycle Gear Set
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This item is currently Sold Out

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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.
The Modify Quantum Double Cycle Gear Set is an extremely advanced set up and should only be attempted by an expert technician. The Quantum Double Cycle gear set features a set of teeth of either side of the sector gear which allows two shots per gear cycle, essentially doubling your rate of fire. The Quantum Double Cycle Gear set uses a half-cycle cut-off system which is able to retain semi-automatic fire which is usually very tricky to pull off with a short stroke style system. The sector clip on this gear system is shaped in such a way to delay the release of the tappet plate to avoid any feeding malfunctions. Modify recommends that this setup should only be used with a 363mm inner barrel or shorter due to the reduced air compression that the short stroke system produces.


  • Two sector design allows double cycle, two shots per gear cycle
  • Half cycle cut-off system retains semi-auto functionality
  • Two sector gear is constructed from high tensile strength steel powder metalurgy
  • Shape optimized sector clip delays the releasing time of the tappet plate, reduces BB feeding issues
  • Two sector gear is compatible with modify speed, Modify Torque and standard gear sets

Professional installation recommended, can not be held liable for any damages caused by use of upgrade components

Package Includes: Gear set, spacer, tappet plate
Compatibility: Most version 2 gearboxes
Material: Steel, Steel alloy, aluminum, polymer

Manufacturer: Modify

2 Customer Reviews

(Write a review)

by Skyler H. on 12/31/2019
"Had this for about a year now, if you do it right and shim it perfectly and keep the RPS under 50 they will last you. Im being easy on it just to see how long I can have them going for, so far I have it paired with a custom motor and a m140 spring with 0 air leaks and a bore up set up its running as is with a 11.1 echo 1 lipo 43 RPS at 316 fps with a .2 yes It is shooting low but these gears are not Siegtech but a budget gear set so as said I am going easy on them.
by Cameron C. on 02/15/2019
"Although I had to modify the yellow thing to fit in my G&G gearbox, the gear set made my semi very snappy and doubled my ROF on auto. It actually made my gun quieter too. Overall, a great buy.

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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.