6400 RPM Module

The MSD IGNITION 6400 RPM Module (part number ASY11535) is a precision RPM-limiting chip designed to cap engine speed at 6400 revolutions per minute, protecting high-performance ignition systems and engine components from over-rev damage. This compact module integrates directly into MSD's digital ignition systems and is essential for racers, engine builders, and tuners who require absolute control over maximum engine speed during testing, competition, or street applications.

The 6400 RPM limit is a critical threshold in many racing classes and engine configurations where sustained operation beyond this point risks catastrophic mechanical failure. This module functions as a fail-safe, electronically cutting or limiting ignition output to prevent the engine from exceeding the programmed ceiling. The lightweight design (0.01 lbs) and compact footprint (2.15 x 0.85 x 3.1 inches) allow seamless installation within tight engine bays without adding significant bulk or weight penalty. MSD's module-based architecture means this RPM limiter works in conjunction with MSD ignition control units and digital timing systems already in use across the automotive performance community.

This component is mandatory for professional drag racing, road racing, and engine dyno testing where RPM parameters are specified by sanctioning bodies or engine specifications. It is equally valuable for street performance builds where builders want to protect fresh engine internals during the break-in period or limit peak RPM on forced-induction applications. The 6400 RPM Module works with existing MSD ignition platforms, making it a straightforward upgrade for users already invested in MSD's proven digital ignition ecosystem.