MSD Performance 89952 - RPM Module/Chip Tester

MSD products are the finest ignition components you can install on your car whether it's a daily driver, dirt tracker, 4-wheel drive, a seven second Pro Stock car or Big Foot. MSD is your exclusive performance ignition company and we thank you for your interest and support.

• Essential for any racing class with RPM limitations
• Test MSD box or RPM module
• Simply plug-in and hold button