The MSD 8680 Adjustable Spark Timing Control Knob is a high-performance part designed specifically for NHRA drag racing vehicles. Made by MSD, a trusted brand in auto performance parts, this knob allows for precise control over the spark timing on the front of the vehicle. Designed for optimal performance, this knob is a must-have for racers looking to fine-tune their ignition system for maximum power and efficiency on the drag strip.
