The MSD Powersports 4350 Universal Launch Master RPM Limiter is a high-performance part designed for auto and racing applications. Made in the United States, this electronic limiter is durable and reliable for enhancing ignition performance. Although it does not come with a harness, it is easy to install and adjust to meet specific RPM requirements. Perfect for those looking to improve their vehicle's ignition system, this product is a must-have for performance enthusiasts. 100 rpm increments Adjustable 1800-9900 rpm