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, but his research was stopped after it was discovered that pushing robots beyond their limits was dangerous to their systems. In Mega Man 11 he finished its development, using it on his new attempt to conquer the world by stealing eight Robot Masters and giving them Double Gears. 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. 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.

Fuse Man, Tundra Man, Acid Man, and Bounce Man also have Speed Gears installed in them.

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 charged when the meter is fully charged, 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 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 or deactivates the gear.

Block Man, Blast Man, Torch Man, and Impact Man 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 simultaneously. Time will slow down, powered-up Special Weapons can still be used when using Double Gear, and the Final Charge Shot will take less time to charge. 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. Also, due to the severe strain, the cooldown period will take longer than normal to end.

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.