Description
The Speedhut 4″ 10K Tachometer/120 mph GPS Speedometer Gauge (R4-DS15-REV) is a precision-engineered dual gauge that integrates a 10,000 RPM tachometer with a GPS-based 120 MPH speedometer into a compact 4-inch unit. It delivers accurate readings without relying on traditional sensors or calibration. Installation is easy with a 12V power source and the included waterproof GPS antenna. Compatible with virtually any engine, this gauge supports tach signals over 1 volt and operates using free, global GPS data. Designed with a high-torque stepper motor and housed in a weather-resistant casing with a solid billet aluminum bezel, this American-made instrument ensures long-lasting performance and comes with a Lifetime Warranty.
KEY FEATURES AND BENEFITS:
- Dual gauge design: Combines a 10,000 RPM tachometer and 120 MPH GPS speedometer
- GPS-based operation: No need for speed sensors, tire size, or gear ratio calculations
- Global functionality: Works anywhere using free GPS signals with no subscription fees
- Universal tachometer compatibility: Supports signals over 1 volt and 0.5–6 pulses per revolution
- Microprocessor precision: Ensures accurate and consistent readings
SPECIFICATIONS:
- Gauge type: Dual GPS Speedometer and Tachometer
- Tachometer range: 0 – 10,000 RPM
- Speedometer range: 0 – 120 MPH
- Size: 4 inches
- Hole size: 3.93 inches (100mm)
- Units: Standard (MPH)
- Tachometer compatibility: Any engine with a tach signal over 1 volt (0.5 to 6 pulses/rev)
- GPS operation: Worldwide, free (receives only)
- Included:
- 8 ft Tachometer Harness (1 Wire, 2 Pin Connector)
- 3 ft Power & Lighting Harness (for LED Lit Gauges and Clocks)
- GPS Antenna with 9.8 ft cable and male SMA connector
HOW TO USE:
- Mount the Gauge: Secure the 4-inch gauge in the 3.93-inch hole using the included spin-lock ring.
- Connect Power and Lighting: Attach the 3 ft harness to a 12V power source and ground. This also powers the LED lighting.
- Connect the Tachometer: Use the 8 ft harness to connect to your engine’s tach signal (ECU, ignition coil, etc.). Ensure the signal exceeds one volt.
- Position the GPS Antenna: Mount in a location with clear sky visibility. The 9.8 ft cable allows flexible placement.
- Connect the GPS Antenna: Attach the SMA connector to the gauge’s GPS input port.
- Start Your Vehicle: Once all connections are secure, start the vehicle. The gauge will acquire GPS signal and display speed and RPM.
BENEFITS OF USING SPEEDHUT 4″ 10K TACHOMETER/120 MPH GPS SPEEDOMETER GAUGE (R4-DS15-REV):
- Simple installation: No traditional sensors or calibration required
- Space-saving design: Combines two essential functions in one gauge
- Universal compatibility: Works with nearly any engine configuration
- Worldwide GPS coverage: No fees or regional limitations
- Durable and stylish: Weather-resistant with a billet aluminum bezel
- Reliable performance: Engineered for demanding conditions
- Peace of mind: Backed by a Lifetime Warranty and built in the USA
FEATURES:
- Stepper motor technology: High-torque movement for precise pointer control
- Weather-resistant build: Suitable for harsh environments
- Easy installation: Includes spin-lock ring and prewired harnesses
- Solid billet aluminum bezel: Durable with a premium look
- Made in the USA: High-quality American craftsmanship with Lifetime Warranty





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