MSD ASY11551 RPM Module Chip RPM Rev Limiter - 8400

The MSD ASY11551 is an individual 8,400 RPM module chip designed to set a precise rev limit on compatible MSD ignition systems. This plug-in chip installs directly into the RPM module socket found on MSD Soft Touch Rev Controls, MSD ignition boxes with integrated rev limiters, and other MSD accessories that use plug-in RPM modules — no tools or complex programming required.

Swapping RPM chips is one of the simplest ways to dial in your engine's rev limit. Simply remove the existing chip and plug in this 8,400 RPM module to instantly change your rev limit setting. The chip is compatible with a wide range of MSD ignition products used in street performance, circle track, and drag racing applications.

Key Features:

• Rev limit: 8,400 RPM
• Plug-in design — installs directly into the RPM module socket on compatible MSD ignition boxes and rev controls
• Compatible with MSD Soft Touch Rev Controls and MSD ignition boxes with integrated rev limiters
• Ideal for high-RPM street performance, circle track, and drag racing builds
• Sold individually — one chip per package
• CARB Executive Order (EO) compliant — legal for use on emissions-controlled vehicles in all 50 states when used per manufacturer's application guide

MSD RPM module chips are available in a wide range of RPM values, making it easy to fine-tune your rev limiter as your build evolves. The ASY11551 sets the limit at a high-performance 8,400 RPM, suited for built engines that demand a higher redline.