Sprockets (BMC)

For other uses, see Sprockets (disambiguation).

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Sprockets

MultiplatformFlash

	Increases sentry fire rate appreciably.

File:BTD5F upgrade Sprockets.svg	Adding sprockets to sentries and the nailgun increase their fire rate appreciably.

Tower		Path	Tier
Monkey Engineer		2	3

Upgrade cost		$550
Prerequisites		City Level 12
Research cost		7,500 (Multiplatform version)  7,500  20 (Flash version)
Research time		2 days
XP for researching		300

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Sprockets is the Monkey Engineer's path 2 tier 3 upgrade in Bloons Monkey City.