Tach 4in Data Logging Stepper Motor Black

The Longacre Tach 4in Data Logging Stepper Motor Black (SKU: LON52-44390) is a precision tachometer designed for high-performance vehicles and racing applications where accurate RPM monitoring and shift-point confirmation are critical. This 4-inch analog/digital instrument delivers real-time engine speed data up to 10,000 RPM with the integration of a shift light, providing drivers with immediate visual feedback during acceleration and gear transitions.

The data logging capability distinguishes this stepper motor tachometer from basic analog instruments. Recording engine performance parameters allows drivers and tuners to analyze acceleration patterns, verify shift timing, and optimize engine mapping during track sessions or dyno testing. The black face with white lettering ensures readability in varying light conditions, while the dash-mount configuration fits standard 4-inch gauge openings common in most custom and factory race car setups. The stepper motor mechanism provides smooth needle movement and exceptional durability compared to traditional magnetic movements.

This tachometer serves bracket racing competitors, road-course drivers, and automotive enthusiasts who require both real-time RPM indication and the ability to log shift events for performance analysis. The combination of analog display and digital data capture makes it particularly valuable for tuning programs where repeatability and precision matter. Weighing 1.05 lbs with compact dimensions (6.4 x 4.6 x 8.2 inches), the instrument integrates cleanly into tight engine bays and custom dash configurations without adding significant bulk or weight penalty.