How does this sensor measure driveshaft speed?

The kit includes a collar with two magnets that attaches to your pinion yoke. As the driveshaft spins, the magnets pass a pickup sensor, which sends a signal to your XFI unit to calculate speed and acceleration.

What is the benefit of measuring driveshaft speed directly?

Measuring driveshaft speed directly provides more accurate data for your traction control system compared to relying solely on engine RPM. This allows for better fine-tuning of your car's performance and launches.

Can this sensor be used in California?

No, this sensor kit is not CARB approved and cannot be shipped to California due to emissions regulations.

FAST Driveshaft Speed Sensor Kit 301436

Name: FAST Sensor Kit Driveshaft Speed-2
Brand: FAST
SKU: fast-fast-sensor-kit-driveshaft-speed-2-t14-4388458
Price: 275.87 USD
Availability: BackOrder

FAST Sensor Kit Driveshaft Speed-2

$275.87

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

FAST XFI Driveshaft Speed Sensor Kit 301436. Accurately measures driveshaft speed for better traction control data.

Key Features

Fits pinion yokes with a 2.1875-inch diameter.
Includes a collar with two magnets and a pickup sensor.
Accurately measures driveshaft RPM and acceleration.
Provides more precise data than engine RPM alone for traction control.
Calculates MPH and, with tire size input, MPG.
Designed for drag racing applications.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

If you're setting up a drag car and need precise data for your traction control system, this XFI Driveshaft Speed Sensor Kit from FAST is a solid option. It accurately measures how fast your driveshaft is spinning, which is crucial for fine-tuning your car's performance and ensuring consistent launches. The kit works by attaching a collar with two magnets around your pinion yoke. As the driveshaft turns, these magnets pass by a pickup sensor, sending a signal to your XFI unit.

This signal allows the XFI to calculate not just driveshaft RPM, but also its acceleration. This gives you a much more reliable reading than trying to guess driveshaft speed based on engine RPM alone. The collar is designed to fit pinion yokes with a 2.1875-inch diameter, ensuring a snug fit for accurate readings. Beyond just speed, this kit can also provide an MPH reading and, if you input your tire size, it can even calculate your miles per gallon.

Keep in mind that this kit is not CARB approved and cannot be shipped to California. It's a well-built piece designed to give you the detailed data you need for competitive racing.