4100-4900 RPM Odd Series Module Kit

The MSD IGNITION 4100-4900 RPM Odd Series Module Kit (MPN 87441) is a precision ignition control module designed for high-performance engine tuning and race applications. This module kit enables fine-tuned RPM management across a critical mid-to-upper engine speed range, making it essential for builders and tuners who demand exact fuel and spark timing control.

This module operates within a 4100 to 4900 RPM band using 200 RPM incremental steps, allowing technicians to program ignition curves with precision across this performance envelope. At just 0.14 lbs with compact dimensions (6.1 x 1.05 x 7.85 inches), the module integrates seamlessly into existing MSD ignition systems without adding significant weight or bulk to engine bay installations.

Engine builders, performance tuners, and race teams benefit most from the 4100-4900 RPM Odd Series Module Kit when optimizing mid-range torque delivery and peak power output in modified or turbocharged applications. This precision-engineered component delivers repeatable timing control and supports advanced tuning strategies that stock systems cannot achieve.