MSD ASY17898 7500 RPM Plug-In Rev Limiter Module for MSD Ignition Boxes

The MSD ASY17898 is a 7,500 RPM plug-in rev limiter module — commonly referred to as an RPM pill or RPM chip — designed to set a precise engine rev limit when used with compatible MSD ignition systems. Simply plug this module into the RPM socket on your MSD ignition box or rev control unit to activate the 7,500 RPM limit with no wiring required.

Key Features:

• 7,500 RPM setting — sets a firm, accurate rev limit to protect your engine from over-rev damage
• Plug-in installation — inserts directly into the RPM module socket on compatible MSD ignition boxes and Soft Touch Rev Controls
• Soft Touch rev limiting action — gradually drops spark to individual cylinders at the RPM limit for smooth, backfire-free limiting without fuel loading
• 100 RPM increment adjustability — swap individual modules to fine-tune your rev limit in precise 100 RPM steps
• Universal MSD compatibility — fits all MSD ignition boxes and accessories with an integrated or external plug-in RPM module socket
• CARB compliant — legal for sale and use on emissions-controlled vehicles in all 50 states
• Sold individually

MSD's RPM modules provide a reliable, tool-free method to dial in your rev limiter for street performance, drag racing launch control, or over-rev protection during missed shifts or drivetrain failures. Compatible with MSD Soft Touch Rev Controls, MSD 6-series ignition boxes with integrated rev limiter, and other MSD accessories that use plug-in RPM modules.