Overclock is the fourth and final upgrade for the Monkey Engineer on the second path. It gives the Monkey Engineer a Special Ability that, once used, turns the cursor into a flaming wrench. Once a tower is clicked with this wrench, it enhances the tower's attack speed by 50%, as well as giving a range boost. This effect lasts for 60 seconds, but as the ability takes 60 seconds to recharge, the ability can be used again immediately. If used on a Monkey Village the towers in its range will also be overclocked, but only for a few seconds. Using Overclock on a Banana Farm forces all the bananas out instantly.
There is an error on the official artwork on the Mobile version; its right hand is brown.
The Overclock Ability takes about 60 seconds to recharge, the same amount of time that the ability lasts for so you can constantly give towers boosts, especially if Hotter Cooldown and High Energy Beacon are both used.
If you use Overclock and M.I.B Call to Arms on one Temple of the Monkey God, the temple will shoot a massive solid beam of sun rays.
Currently, it is not known what effect Overclock does to Monkey Banks and Banana Investment Advisories. It can be guessed that it forces the Monkey Banks and Banana Investment Advisories to their maxes, but this has not yet been proven.