Universal Rectangle GRFX Digital Instrument System – Complete Overview

When it comes to upgrading your ride, nothing transforms the driving experience quite like a state-of-the-art digital instrument cluster. The Universal Rectangle GRFX Digital Instrument System is designed to bring modern technology, precision monitoring, and full customization to virtually any vehicle application. Whether you’re building a classic resto-mod, customizing a hot rod, or upgrading a daily driver, this system delivers cutting-edge features that put old-school factory gauges to shame.

With its sleek 8.61" x 4.86" cutout, 8.83" x 5.08" bezel, and compact 1.61" depth, the Universal Rectangle GRFX is engineered for maximum compatibility while still offering a commanding presence on your dashboard. Unlike traditional analog gauges that fade, lose calibration, or lack modern features, this cluster is built to grow with your build, offering accuracy, reliability, and endless customization.

Available now at Gauge Store under part number Universal Rectangle GRFX Digital Instrument System.

Key Dimensions

• Cutout: 8.61" x 4.86"

• Bezel: 8.83" x 5.08"

• Depth: 1.61"

These dimensions make it ideal for a wide variety of dash setups, giving fabricators, DIY enthusiasts, and pro builders flexibility when integrating into custom or OEM panels.

Complete Gauge Ranges

The Universal Rectangle GRFX Digital Instrument is not just about looks—it’s about full monitoring power. Every essential metric of your vehicle is captured with unmatched precision:

• Speedometer

  • Simulated Needle: Up to 200 MPH / 320 km/h

  • Digital Range: Up to 255 MPH / 410 km/h

• Tachometer

  • Simulated Needle: Up to 16,000 RPM

  • Digital Range: Up to 16,000 RPM

• Oil Pressure

  • Simulated Needle: Up to 150 psi

  • Digital Range: Up to 300 psi with optional 0-300 psi sensor SEN-03-9

• Water Temperature

  • Simulated Needle: Up to 260ºF (130ºC)

  • Digital Range: Up to 300ºF (130ºC)

• Fuel Level

  • Needle shows E, 1/4, 1/2, 3/4, F

  • Digital Range: 0–100%

• Voltmeter

  • Simulated Needle: Up to 18 VDC

  • Digital Range: 0–18 VDC

• Clock

  • 12 Hr Analog / Digital Clock Movement

This means no matter what type of build you’re running—from a turbocharged drag car to a cross-country touring vehicle—you’ll always have real-time data at your fingertips.

Advanced Digital Message Centers

Unlike simple aftermarket gauge clusters, the GRFX integrates a digital message center for advanced data reporting.

Standard Displays

• Odometer (million-mile capability, one-time settable)

• Dual Trip Meters (A/B up to 9,999.9)

• 12-Hour Digital Clock

• Estimated Range / Miles to Empty

• Hour Meter

Performance Meters

• 0–60 MPH Timer (0–100 km/h)

• 1/4 Mile & 1/8 Mile ET

• Trap Speed (1/4 and 1/8 mile)

• High Speed Recall

• High RPM Recall

• G-Force Meter

These built-in features make it a track-day companion as much as a daily driver necessity.

Built-In Indicators

The Universal Rectangle GRFX eliminates the need for extra dash lights by including key indicators:

• Turn Signals (Left/Right)

• High Beam

• Check Engine Light

• Parking Brake

• Cruise Control (On & Engaged if equipped)

• Gear Position (requires optional GSS-3000 sensor)

• 4x4 Indicator (when equipped)

• Wait to Start (Diesel Applications)

• Two Auxiliary Inputs with Custom Labels

Note: Not all OEM warning lights are included, but unused indicators can be repurposed for your custom needs.

Lighting Technology & Customization

The Universal Rectangle GRFX excels in visibility and personalization:

• 30+ User-Selectable Colors for needles, sweeps, and numeric displays

• Internal Photo Sensor adjusts brightness automatically based on ambient light

• Auto High-Contrast Mode for sunlight readability

• Auto Night Mode for glare-free night driving

• Manual Brightness Control available with optional DIM-1 knob

Plus, you can choose from four factory preset themes (Standard, Performance, Modern, Era) or build your own custom look with unique day/night color schemes.

Cutting-Edge Technology

Unlike dated LCD displays, this system uses full RGB backlighting for unmatched clarity and color accuracy. You can easily program different day and night themes, ensuring your dash always looks as good as it performs.

Included Sensors & Hardware

Each kit is designed for a complete installation experience. Included are:

• Water Temperature Sensor – 1/8” NPT, ground-isolated, with 10 ft harness

• Oil Pressure Sensor – 1/8” NPT solid-state sensor with 10 ft harness

• Cable-Driven Speed Sensor/Generator – replaces GM-style speedometer cables with 10 ft harness

• Bushings – Includes adapters for 1/8", 1/4", 3/8", 1/2" NPT and metric 12mm & 16mm x 1.5

Optional: Relocation adapter Part #130011 (sold separately) for tight clearance installations.

Calibration & Operation

Every Universal Rectangle GRFX system is calibrated with ease:

• Pushbutton Control – Rocker switch included for menu navigation and quick access.

• Mobile App – Configure via iOS or Android app with real-time diagnostic displays.

• Calibration Simplicity – Speedometer & fuel level calibrated with a short test drive (or instantly when using optional GPS-50-2 sensor).

Why Choose the Universal Rectangle GRFX Digital Instrument?

1. Universal Fitment – Works across classics, customs, hot rods, trucks, and modern builds.

2. Unmatched Customization – Over 30 colors, multiple themes, day/night modes.

3. Complete Performance Tracking – From 0-60 MPH times to G-forces.

4. Easy Installation – With included sensors and pushbutton calibration.

5. Long-Term Reliability – Solid-state design, no mechanical cables to fail.

6. Future-Proof – Works with both traditional senders and modern sensors.

Perfect Applications

• Classic Restorations – Keep a stock look with modern reliability.

• Street Rods & Hot Rods – Add style and precision to your dashboard.

• Muscle Cars & Drag Racers – Track ETs, trap speeds, and recalls.

• Trucks & SUVs – Monitor towing, off-roading, or daily performance.

• Diesel Builds – Integrated “Wait to Start” compatibility.

Shop with Confidence at Gauge Store

As an official dealer, Gauge Store carries a full selection of Dakota Digital Instrument Systems, including:

• RTX Digital Instrument Clusters

• HDX Series Digital Systems

• GRFX Universal Systems

Plus, you’ll find essential add-ons like:

• GSS-3000 Gear Position Sensor

• SEN-03-9 0–300 PSI Oil Pressure Sensor

• GPS-50-2 Speed Sensor

SEO-Optimized Features for Your Build

If you’re searching for Universal Digital Gauge Clusters, Dakota Digital GRFX Systems, or custom digital dash kits, this product delivers everything enthusiasts demand: precision, versatility, and unbeatable looks.

By upgrading with the Universal Rectangle GRFX Digital Instrument, you ensure your build is ready for modern performance standards, whether you’re headed to the car show, track, or open highway.

Conclusion

The Universal Rectangle GRFX Digital Instrument System is the ultimate upgrade for any build where precision, customization, and performance matter. It combines factory-style reliability with high-end digital technology, making it perfect for both enthusiasts and professionals.

Order your Universal Rectangle GRFX Digital Instrument today at Gauge Store and transform your dashboard into a powerhouse of style and function.