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MSD RPM Module Testers

5.0 out of 5 stars 2 Customer Reviews

If you're using an MSD ignition box or rpm module, you need to have one of these rpm checkers. Each tester operates on a single 9 V battery and is simple to use; you just plug it into your MSD ignition box or rpm module and hold down the button—that's it. MSD rpm module testers are essential for any racing class with rpm limitations.

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MSD RPM Module Testers 89952

Ignition Testers, RPM Module Testers, Each

Part Number: MSD-89952

5.0 out of 5 stars ( 2 )

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