Double Gear System

The Double Gear System (ダブルギアシステム) is a gameplay feature from Mega Man 11.

Story
Double Gear is a system developed by Dr. Wily when he was younger. A committee was convened, and Wily's research was halted as pushing robots beyond their limits was dangerous to their systems, Light's research into robots with independent thought being selected over Wily's research. Angry, Wily broke his prototype and claimed that one day the world would know he was right, ending their friendship. Light kept Wily's prototype.

In Mega Man 11, Dr. Wily decided to finish the development of the Double Gear system, using it on his new attempt to conquer the world. He stole eight Robot Masters and gave them the Double Gear system to use as test subjects. Under Mega Man's request, Dr. Light reluctantly installed the prototype Double Gear system on Mega Man, giving him new abilities to use against Dr. Wily's robots. The installation process took a few days. Although Mega Man gains increased speed and power, a side effect from overusing these gears is that they will overheat Mega Man, preventing him from using Double Gear again until after the cooldown has ended.

Speed Gear
Speed Gear (スピードギア) is a blue gear that increases the speed of robots. Gameplay-wise it slows down time when used by Mega Man, representing his increase in speed; using the Speed Gear allows tight platforming and enemy evasion easier. The Speed Gear's effect is similar to the Time Slow's effect in Mega Man Powered Up, with the difference being that Mega Man now creates blue afterimages when moving around while the Speed Gear is activated.

Aside from Mega Man and the Wily Capsule, Fuse Man, Tundra Man, Acid Man, Bounce Man, and Yellow Devil MK-III also have Speed Gears installed in them. Wily also installed one on his UFO.

Power Gear
Power Gear (パワーギア) is a red gear that increases the power of robots. When used by Mega Man it allows him to shoot two Charge Shots together (a regular charged shot, followed by a red colored charge shot), knocking Mega Man back a little due to its power. The Power Gear also increases the power of his Special Weapons. If the Mega Buster is fully charged when the meter reaches its limit, it will be possible to fire an extra-powerful Final Charge Shot (ファイナルチャージショット), but at the price that the cooldown period from overheating cannot be prevented. Notably even if the gauge meter reaches maximum, Mega Man will not enter cooldown mode while charging until he either fires the Charge Shot, deactivates the gear, or is damaged.

Aside from Mega Man and the Wily Capsule, Block Man, Blast Man, Torch Man, Impact Man, and Mawverne also have Power Gears installed in them.

Double Gear
Double Gear is only available when Mega Man is low on health, which can help him in a pinch. By simultaneously activating the Speed Gear and Power Gear, Mega Man can use them together. Time will slow down, powered-up Special Weapons can still be used when using Double Gear, and the Final Charge Shot will be easier to use. However, unlike the individual gears, it cannot be canceled when activated, and when its duration is over it will leave Mega Man severely weakened due to the overheat; he won't be able to use the gears or even fire charge shots until he's cooled down, and he can only fire one shot at a time instead of three. Also, due to the severe strain, the cooldown period will take longer than normal to end.

Dr. Wily's Wily Capsule is also capable of using Double Gear, allowing it to use a dash/teleport attack.

Trivia

 * The Double Gear System's design was likely conceived for the purpose of manual and accessible overclocking, being to allow mechanisms to increase their output by overriding or removing the limitations of their components through going over their intended threshold of capability, but at the risk of serious and permanent damage to their systems as this process of overworking the components may wear out and abuse their functional parts as such output was not intended for their current specifications.
 * The gears as they are shown in the intro references the colors of the Nintendo Switch's Joy-cons: Red and Blue, but in the opposite position.
 * The recoil effect that Mega Man experiences with the Charge Shot while the Power Gear is activated is similar to the Charge Shot in Mega Man IV.
 * Mega Man's ability to power-up special weapons through the Power Gear is similar to his successor's ability to power-up special weapons from most of the armors he receives through the Charge Shot. The only difference is that it does not require extra Special Weapon energy to use an enhanced Special Weapon attack.