It is a kit that includes the necessary components for installation and operation. This product does not have an air restriction and is not limited to truck freight, making it versatile for various vehicle types.
MSD Ignition 87431 RPM Module Kit
MSD Ignition 8748, RPM Module Chip Kit 8000-8800 RPM 200 RPM Increments Even
MSD Ignition 87441, RPM Module Chip Kit 4100-4900 RPM 200 RPM Increments Odd
MSD Ignition 87461 RPM Module Kit 6100-6900 RPM, 200 RPM Increments
MSD Ignition 87471 RPM Module Kit 7100-7900 RPM, 200 RPM Increments
MSD Ignition 8747 RPM Module Kit for 7000-7800 RPM, 200 RPM Steps
