Custom Race Car Dash Display Manufacturer & Factories

Pioneering High-Precision Telemetry Systems and Tailored Modification Instruments Since 1986

Professional Race Instrumentation

Explore our premium grade aftermarket and racing dashboards engineered for split-second precision and extreme vibration resilience.

Custom 85mm Universal GPS Speedometer

Custom 85mm Universal GPS Speedometer with Pointer LCD Display & Odometer

Integrated GPS antenna technology for instant satellite sync, real-time speed monitoring, and pointer accuracy on tough race environments.

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Wholesale 5 Inch 4 in 1 Car Tachometer

Wholesale 5 Inch 4 IN 1 Car Tachometer, Water & Oil Temp, Oil Pressure

An multi-parameter monitoring hub. Includes an external shift light, integrated sensors, and high RPM measurement for track use.

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Custom Race Dash Panel DO926NB

Custom Race Dash Panel Multi-Function Dashboard Narrowband with Sensor Kit DO926NB

Advanced DO926NB telemetry unit with sensor suite designed to monitor vital engine diagnostics via a robust wired harness.

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Custom 52mm Dual Display Water Temperature & Voltage Gauge

Custom 52mm Dual Display Water Temperature & Voltage Gauge

Compact 52mm dual monitoring screen optimized for 12V and 24V vehicles. Delivers precise digital voltage and temperature diagnostics simultaneously.

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Custom China Suppliers Rally Race Dash Panel DO904

Rally Race Dash Panels 9 in 1 Gauge Bluetooth LCD Dashboard DO904

Featuring a 9-in-1 multi-display and Bluetooth connectivity. Ideal for rally cars needing centralized sensory parameter aggregation.

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Wholesale 3.5 Inch LCD Racing Gauge DO916

Wholesale 3.5 Inch LCD Racing Gauge with Sensor Kit - SincoTech DO916

Precision 3.5-inch racing display featuring integrated sensor arrays to keep critical parameters in focus without taking up excessive cabin space.

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Custom 52mm Boost Tachometer Gauges

Custom 52mm Boost Tachometer & Gauges - 7-Color Backlight

Equipped with customizable 7-color backlights. Comes complete with water, oil, and Exhaust Gas Temperature (EGT) sensors for targeted diagnostics.

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Custom Race Dash Panel DO922

Custom Race Dash Panel DO922 - 7 Colors LCD Bluetooth Gauge

Premium 7-color display dashboard with dynamic wireless sensor communication for quick and streamlined cockpit upgrades.

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Est. 1986

Ruian DongOu Automobile Meter Factory

For nearly four decades, Ruian DongOu Automobile Meter Factory has stood at the forefront of the design, engineering, and mass production of premium automotive instrumentation systems. We have dedicated ourselves to building robust, high-performance measurement devices that deliver exceptional accuracy in high-stress driving environments.

By integrating advanced manufacturing methodologies with our profound technical R&D depth, we offer global automotive tuning companies, performance workshops, and racing teams a trusted manufacturing partnership that satisfies rigorous performance metrics.

Dual-Brand Strategy for Modification & Racing

SincoTech: High-end instrument panels developed in cooperation with leading Australian automotive engineering partners. Focused entirely on track-day diagnostics and professional motorsports applications.

GragonGauge: A premier modification instrument brand featuring versatile sizes (52mm, 60mm, and 85mm) covering tachometers, vacuum, EGT, AFR, water/oil temperature, oil pressure, and boost meters.

Ruian DongOu Automobile Meter Factory Facility
38+
Years R&D Excellence
2
Core Performance Brands
50+
Exporting Countries
100%
Calibration Inspected

Macro Industrial Solutions

Architecting modular vehicle telemetry frameworks for motorsports, commercial fleets, and advanced automotive modification markets.

CAN-bus Integrations

We supply modular dashboard arrays capable of integrating with standard J1939 CAN-bus protocols and custom ECUs, providing seamless data transmission without signal latency.

Bluetooth Telemetry Grids

Through our SincoTech development pipeline, we have engineered secure, low-latency Bluetooth receiver networks that connect multiple engine bay sensor nodes to the cabin's primary display unit.

Dynamic Warning Alerts

Protect high-value power units with programmable warning system thresholds. Integrated LED visual indicators flash rapidly to prevent engine failures due to overheating or oil pressure drop.

Global Commercial & Industrial Landscape

Responding to international demand with state-of-the-art manufacturing infrastructure and customized OEM/ODM design capability.

The international aftermarket for high-performance automotive instrumentation is undergoing a rapid transition. Drivers demand instantaneous, consolidated data hubs rather than traditional, scattered analog dials. By operating as a direct-to-factory manufacturer, Ruian DongOu Automobile Meter Factory bridges the gap between premium racing technology and affordable retail scale.
Our products are deployed extensively across the Americas, the European Union, Australia, and parts of Southeast Asia. We support tuning workshops, warehouse distributors, and professional racing teams by delivering high-density LCD and OLED panels capable of operating under extreme ambient light, high heat, and intense mechanical vibrations. Our production facility is equipped with precise surface mount technology (SMT) machinery, ensuring that every printed circuit board assembly (PCBA) inside our gauges meets demanding global durability standards.

Localization, Standards & Compliance

Ensuring that our global customers face no regulatory or operational hurdles.

ISO 9001 Management

Our complete factory operations conform strictly to ISO 9001 quality management benchmarks, ensuring tracking of raw components and consistent batches.

CE & FCC Certification Support

We work closely with global distributors to provide CE conformity certificates and FCC electromagnetic compliance verification for wireless Bluetooth models.

Custom Imperial / Metric Scales

To support local market expectations, all firmware supports selectable metric and imperial units (Celsius/Fahrenheit, Bar/PSI, Km/h / MPH).

Targeted Racing & Modification Scenarios

Engineered for maximum stability where default automotive displays fall short.

Professional Track & Circuit Racing

In endurance circuit racing, keeping temperatures and pressures in sight is critical. Our multi-function SincoTech OLED dashboard aggregates crucial engine parameters into a single high-contrast viewport, utilizing progressive shift-lights to help drivers shift perfectly.

Off-Road & Rally Endurance

Rallying subjects electronics to severe dust, mud, and continuous shock. Our ruggedized housings feature IP67 levels of dust and water resistance, coupled with reinforced wire-harness connections, ensuring data integrity over rough terrains.

Custom Modified Street Tuning

For custom cars and restomod projects, space behind the dashboard is premium. Our 52mm GragonGauge dual-display options slide neatly into standard pillars or console layouts, providing precise diagnostic data without modifying the car's retro aesthetic.

Technical Roadmap & Next-Gen Innovations

A peek into the engineering future of Ruian DongOu's display technology.

As vehicles transition toward hybrid powertrains and fully electric setups, our technical R&D team is focusing on updating our telemetry architectures. Our current research initiatives target three major areas:
  • Integrated CAN-FD Support: Upgrading our dashboard systems to interface seamlessly with CAN-FD protocols, which support higher data throughput for modern sports car architectures.
  • Anti-Glare Glass Lamination: Transitioning next-generation displays to utilize chemically etched anti-glare glass, securing visual readability under direct afternoon sunlight.
  • Mobile App Dash Customization: Implementing BLE (Bluetooth Low Energy) applications that allow drivers to dynamically customize warning limits, gauge layouts, and shift light patterns using their smartphones.

Factory Precision Modifications

Premium wholesale dashboard and gauge sets built for high-performance automotive applications.

Wholesale 52mm Car Gauge Set

Wholesale 52mm Car Gauge Set - Boost, Temp, Oil, EGT, Tachometer

Comprehensive 52mm modification kit featuring step-motor precision pointers to monitor boost pressure, EGT, water temp, and oil dynamics.

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Wholesale 52mm Double Display Gauge

Wholesale 52mm Double Display Water Temperature and Voltage Gauge

Reliable double-display sensor suite offering voltage and water temperature monitoring for heavy-duty 12V/24V commercial and tuning vehicles.

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Custom China Factory DO922 Multi-Function Dashboard

DO922 Multi-Function Race Dashboard with 7 Colors LCD Display

Our flagship DO922 model integrates high-speed sensor transmission, providing seven configurable LCD backlight settings.

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Custom 52mm Dual Display Car Gauge

Custom 52mm Dual Display Car Gauge Water Temperature & Voltage Meter

Compact, dash-mounted dual meter engineered for rapid sensor updates and clear numerical readouts under intense tracking sessions.

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Digital Dual Display Gauge 12V 24V

Custom 52mm Digital Dual Display Water Temperature and Voltage Gauge

Highly precise digital instrumentation specifically engineered to withstand voltage spikes in dual-battery offroad setups.

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Race Dash Panel DO926NB Sensor Kit

Race Dash Panel Multi-Function Dashboard with Sensor Kit - DO926NB

Includes a full harness sensor kit. Deliver instant readout for critical temperature, tachometer, and pressure parameters.

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Custom Rally Car Dash Panels

Custom Rally Car Race Dash Panels 9 in 1 LCD Gauge - DO908

Waterproofed, high-intensity LCD dashboard tailored for demanding rally and open-cabin environments. Designed for simple installation.

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Custom Multi-Function Race Dashboard OBDII

Custom Multi-Function Race Dashboard LCD Display OBDII Bluetooth

Advanced plug-and-play solution utilizing Bluetooth connectivity to read real-time engine codes and diagnostic parameters from OBDII ports.

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Technical FAQ & Knowledge Hub

Answering crucial engineering, purchasing, and installation questions for race car builders and wholesale buyers.

How does a Bluetooth race dash display compare to a hardwired dash system?

Bluetooth dashboard displays (like our SincoTech DO922 or DO904) streamline installation by removing the need to route complex wiring looms through the firewall of the race car. A Bluetooth transceiver unit is mounted in the engine bay to collect sensor signals (e.g., oil pressure, water temperature, boost) and transmits them wirelessly to the display. Hardwired dashboards (like the DO926NB) are typically preferred for professional motorsports where maximum shielding against electromagnetic interference is required.

Are your custom race dash panels compatible with aftermarket ECUs?

Yes, our display architectures are built to hook up with standard OBDII protocols, making them compatible with most factory ECUs from 1996 onward. For custom race builds running standalone ECUs (e.g., Link, Haltech, Motec), our direct-sensor kits bypass the ECU entirely, capturing raw physical parameters via dedicated digital and analog sensors.

What custom manufacturing (OEM/ODM) options does Ruian DongOu offer?

As a dedicated manufacturer with in-house R&D and production facilities, we support extensive customization. This includes custom branding and logo integration on the glass or digital startup screen, modified display parameter limits (RPM limits, temperature scale changes), personalized backlighting colors, and custom harness lengths. Wholesale buyers can specify unique housing layouts to fit specific dashboard cavities.

How do you ensure the calibration accuracy of water temp and oil pressure gauges?

Every gauge undergoes testing and calibration on our specialized testing rigs before packaging. Sensors are paired with corresponding instrument receivers to ensure resistance levels match exactly, avoiding reading drift over time. Our quality control team subjects random batches to thermal stress tests ranging from -20°C to +80°C to guarantee stability in cold winters and peak desert racing.

Are the LCD displays readable under direct sunlight during track use?

Yes. Our SincoTech racing dashboards utilize high-brightness LCD screens (and OLED variants) equipped with anti-reflective polarizers. This maintains readability even in open-top rally vehicles or track cars with high dashboard exposure. The display backlighting can be adjusted for day and night modes to prevent driver glare during night stages.