4" GPS Speedometer + TS/HB | 260 km/h | Metric | Porsche 356 Design

SKU: R4-S4T-PCH2
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$416.25 USD
Tracks high-range metric speed with GPS accuracy and a clean Porsche 356 Design layout. Built for calibration-free speed data with no transmission sender required. Precision Speedhut movement keeps readings smooth, stable, and easy to trust.
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Order leaves our facility in about 2 Weeks

The Porsche 356 Design GPS Speedometer delivers high-range metric speed tracking with GPS accuracy and no transmission sender required. Built for classic Porsche-style dashboards, it gives custom, restored, and performance-focused builds clean speed data without added drivetrain signal work. Precision Speedhut movement keeps the pointer smooth and stable, while rugged construction is built for long-term reliability. Made in the USA and backed for life.

Track-Tested.USA-Built.Backed for Life.

Key Features

  • GPS Speed Tracking: Delivers speed data without a transmission sender.
  • High-Range Metric Scale: Built for higher-speed kilometer-per-hour tracking.
  • Porsche 356 Design: Built to complement classic Porsche-style interiors.
  • Clean Installation: Simplifies speedometer setup for custom and restored builds.
  • Speedhut Accuracy: Delivers smooth, stable gauge readings.
  • Made in the USA with Lifetime Warranty: Built by Speedhut and backed for life.
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Built to last. Backed for life.
  • Lifetime warranty on internal circuit board electronics
  • 5-year coverage on sensors and wiring
  • Applies to gauges purchased since Jan. 1, 2006

Every Speedhut gauge includes a lifetime warranty* on the electronic circuit board inside the gauge case. It is the core of the gauge — the part responsible for the precision communication that delivers the accuracy and performance Speedhut is known for.

Sensors, wiring, and other external components are covered by an unlimited 5-year warranty.

This combined lifetime / 5-year warranty applies to the original purchaser.
*For your lifetime — as long as you own the gauge — we stand behind it.
Speedhut Inc warrants products to be free from defects in materials or workmanship. This warranty is limited to repair or replacement. Speedhut Inc is not responsible for incidental or consequential damages. Improper use, installation, or unauthorized modifications void this warranty.

They are incredibly simple and straightforward to install! Our GPS Speedometers connect to the Global Positioning System through an antenna, and don't require a transmission sensor. (The antennas are included with the GPS Speedometers, too!) This makes them very easy to install in vehicles that lack electronic sensor output.

The GPS speedometer updates 4 to 5 times per second. The update rate is fast enough to not show any noticeable delay in keeping up with speed under hard acceleration or braking. Our GPS speedometer are used without issues in many performance cars!

If you exceed your speedometer's maximum speed, the pointer will remain at the maximum speed position, and will not move below the maximum speed position until your speed drops back into a readable range.

Luckily for all of the speed-fiends out there, this will NOT damage the speedometer.

If the speed exceeds the analog range and you are using a GPS speedometer with an LCD display then you can use the digital speed display feature to view your current speed.

Our GPS speedometers rarely drop signal. They use a powerful 'active' antenna which perform exceptionally well in all driving environments, including tall buildings, canyons, and extreme weather such as rain and snow. In most cases, the only time you will experience a signal loss is while driving in tunnels or in parking garages.

No, but we offer three different antenna lengths for you to choose from: 5', 9.8' and 15'.

The best location for the GPS antenna to be mounted is on the roof of the vehicle. The GPS antenna is waterproof and magnetic. If the roof is inaccessible, the antenna can be mounted on the top of the dashboard in a place with maximum exposure to the sky.

Metal will block the GPS signal, but the GPS antenna can receive a signal through thin materials like wood, glass, fiberglass, and plastic.

Yes, we can do that for you!

Please tell us your mileage in the 'Order Comments', and we will program your odometer when we build your gauge.

If you already own one of these speedometers you can send it back to us and we can program the miles into the odometer (shipping charges will apply).

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