Speed Sensor

The XFI Driveshaft Speed Sensor Kit from FAST accurately measures driveshaft speed to provide better data for the traction control unit. Two magnets are fitted to the collar around the pinion yoke, which attaches to the driveshaft. When the magnet passes the pickup, it sends a signal to the XFI unit. The XFI uses that signal to calculate driveshaft RPM and also driveshaft acceleration. As a result, the XFI Driveshaft Speed Sensor Kit provides a much more accurate data reading than attempting to determine driveshaft speed solely through engine RPM. Perfect for drag race applications, this unit also provides a MPH reading, and, if the user enters tire size, miles per gallon.

Additional Information

This driveshaft speed sensor kit is designed for pinion yokes that have a 2.1875" diameter. This collar must fit perfectly around the pinion yoke for an accurate measurement.

Part Type

Vehicle Speed Sensor

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Product Downloads

#	Document Type	Download
1.	Catalog

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Reference Information

Driveshaft Speed Sensor Kit, FAST XFI, 2.188 in. Driveshaft Collar Diameter, Data Acquisition, Drag Race, Kit

FAST XFI driveshaft speed sensor kits measure driveshaft rpm to provide more accurate data for the traction control unit. Two magnets are fitted to the collar around the pinion yoke, which attaches to the driveshaft. When one of the magnets passes the pickup, it sends a signal to the XFI unit. They then use that signal to calculate both driveshaft rpm and driveshaft acceleration. As a result, these speed sensor kits provide much more precise readings, as opposed to determining driveshaft speed solely through variable engine rpm. The data they provide is perfect for drag race applications.