Description
The Speedhut 4″ 120 mph GPS Speedometer / 8K Tachometer Gauge (R4-DS2-LEG) offers a cutting-edge solution for monitoring two critical vehicle parameters in a single, convenient unit. This dual gauge combines the accuracy and ease of GPS-based speed measurement with the reliable engine speed indication of a traditional tachometer. Designed for straightforward installation and dependable performance, this gauge is an excellent addition to a wide range of vehicles.
KEY FEATURES AND BENEFITS:
- Integrated GPS Speedometer: Provides real-time speed data without conventional speed sensors, simplifying installation and eliminating calibration needs.
- 8K RPM Tachometer: Ensures accurate engine speed indication, compatible with signals over 1 volt and from 1/2 to 6 pulses per revolution.
- Universal Engine Compatibility: Supports a wide variety of engine types and performance setups.
- Internal Microprocessor: Enhances precision and accuracy of both speed and RPM readings.
- High-Torque Stepper Motor: Delivers reliable and responsive pointer movement under all conditions.
- Easy Installation: Slim case and spin-lock ring fit into a standard 3.93-inch (100mm) hole.
- Durable Design: Weather-resistant housing with a billet aluminum bezel for long-term use.
- Global Functionality: Operates worldwide with no subscription or calibration requirements.
- Lifetime Warranty: Ensures peace of mind and product reliability.
- Made in the USA: Proudly manufactured with premium materials and craftsmanship.
SPECIFICATIONS:
- Gauge Type: Dual GPS Speedometer / Tachometer
- Speedometer Range: 0-120 MPH
- Tachometer Range: 0-8K RPM
- Gauge Size: 4 inch
- Mounting Hole Size: 3.93 inch (100mm)
- Power Requirement: 12V
- Included: 3 ft Power & Lighting Harness (for LED Lit Gauges and Clocks), 8 ft Tachometer Harness (for LED Lit Gauges – 1 Wire 2 Pin Connector), GPS Antenna with 9.8 ft cable and male SMA connector
HOW TO USE:
- Mount the Gauge: Locate a suitable 3.93-inch (100mm) hole in your dashboard. Insert and secure the gauge using the spin-lock ring.
- Connect Power: Attach the red wire to a 12V power source and the black wire to ground. Optional wires are for LED lighting.
- Install GPS Antenna: Mount the antenna with a clear sky view, route the cable to the back of the gauge, and connect via SMA connector.
- Connect Tachometer Signal: Identify the tach signal wire on your engine and connect to the tach harness. Ensure signal is above 1 volt.
- Initial Operation: Start the vehicle. The GPS will acquire signal for speed display, and the tachometer will read engine RPM automatically.
BENEFITS OF USING THE SPEEDHUT 4″ 120 MPH GPS SPEEDOMETER / 8K TACHOMETER GAUGE (R4-DS2-LEG):
- Accurate GPS-based speed monitoring without sensor calibration.
- Easy installation and minimal wiring requirements.
- Reliable tachometer performance across a range of engines and configurations.
- Space-saving dual-function design for clean dashboard integration.
- Weather-resistant construction ensures long-term use in various environments.
- Lifetime warranty offers assurance of product quality and support.
- Proudly made in the USA for top-tier performance and craftsmanship.
FEATURES:
- Real-time speed tracking via satellite-based positioning.
- Broad engine compatibility for RPM measurement (1/2 to 6 pulses per rev).
- Integrated processing for highly precise measurements.
- Robust motor for accurate pointer movement in demanding conditions.
- Low-profile design for seamless dashboard integration.
- Secure and straightforward mounting system.
- Durable and stylish outer ring crafted from solid aluminum.
- Engineered to resist the elements for long-lasting use.
- Backed by a commitment to quality with a full lifetime guarantee.
- American-made, ensuring superior quality and craftsmanship.






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