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Increases sentry fire rate appreciably
~ in-game upgrade description
Sprockets

A monkey engineer with the sprockets upgrade.

Sprockets is a tier 3 upgrade for the Monkey Engineers second upgrade path. It increases the attack speed for sentries and the Monkey Engineer's nail gun. By getting this upgrade, the tier 3 upgrade in the first path cannot be purchased. Sentries that belong to Sprockets Engineers become SentrySprockets(named in BMC Flash only), if at least the Sentry Gun upgrade is bought.

CostsEdit

TriviaEdit

BMC Sprockets error

The helmet-switching mistake from the Sprockets upgrade in BMC Flash

  • The official artwork has a mistake in it; the Engineer's helmet is red. At the same time, the Larger Service Area upgrade's official artwork has the black helmet from this upgrade.
  • This upgrade also increases range, as it's notable under Monkey Village's influence.
  • The BTD5 Artwork shows that he is showing his teeth angry similar to the Barbed Darts Monkey Sub and the Tribal Turtle (Standard Only, not Pro).
  • Overclock Engineers' sentries in Bloons Monkey City Flash are still SentrySprockets.
  • This upgrade dramatically increases the attack speed of Super Sentries if its Tier 4 Speciality Building is active.