Speedhut R4-S21-REV 4" Speedo 180 mph programmable

Easy Programmable Calibration - User-configurable to match gear ratios, tire sizes, and VSS signals for exact speed accuracy in minutes.
Universal VSS Compatibility - Works with any electronic vehicle speed sensor for broad application across street, classic, and performance vehicles.

$241.94

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$290.33

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Product Summary

Universal Fit, 4" Gauge Diameter, 3.9" Body Diameter

Easy Programmable Calibration - User-configurable to match gear ratios, tire sizes, and VSS signals for exact speed accuracy in minutes.
Universal VSS Compatibility - Works with any electronic vehicle speed sensor for broad application across street, classic, and performance vehicles.
Precision Stepper Movement - Microprocessor-controlled high-torque stepper motor ensures smooth, accurate, vibration-resistant readings in any condition.
Bold Modern Styling - Aggressive face with high-contrast markings, pointer, and bright LED backlighting for superior day/night visibility.
Lifetime Warranty Durability - Rugged, weather-resistant build backed by Speedhut's lifetime electronics warranty for long-term reliability.

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Key Specs

Gauge Diameter	4"
Depth	1.3"
Gauge Range	0-180 mph
Gauge Style	Analog
Gauge Series	Analog

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Speedhut R4-S21-REV Details

The Speedhut Programmable Speedometer delivers precision-engineered accuracy tailored to your vehicle's exact setup. Effortlessly calibrate it to match any gear ratio, tire size, or speed sensor configuration-no complex tools required. Compatible with virtually any electronic vehicle speed sensor (VSS), this user-configurable gauge provides reliable, customized MPH or km/h readings for street, performance, restoration, or off-road builds. Built with smooth high-torque stepper motor movement, bright LED backlighting, rugged USA-made construction, and aggressive modern styling, it's the ideal upgrade for muscle cars, hot rods, classics, trucks, or custom projects demanding pinpoint speed data.

Easy Programmable Calibration - User-configurable to match gear ratios, tire sizes, and VSS signals for exact speed accuracy in minutes.
Universal VSS Compatibility - Works with any electronic vehicle speed sensor for broad application across street, classic, and performance vehicles.
Precision Stepper Movement - Microprocessor-controlled high-torque stepper motor ensures smooth, accurate, vibration-resistant readings in any condition.
Bold Modern Styling - Aggressive face with high-contrast markings, pointer, and bright LED backlighting for superior day/night visibility.
Lifetime Warranty Durability - Rugged, weather-resistant build backed by Speedhut's lifetime electronics warranty for long-term reliability.

CA Prop 65

Speedhut R4-S21-REV Specifications

KEY SPECS
MFG. Part #	R4-S21-REV
Brand	Speedhut
Gauge Diameter	4"
Depth	1.3"
Gauge Range	0-180 mph
Gauge Style	Analog
Gauge Series	Analog

GENERAL
Body Diameter	3.9"
Gauge Sweep	Full Sweep
Lighted	Yes
Liquid Filled	No
Bezel Finish	Chrome
Light Color	White
Sending Unit Included	No
Includes Bulb and Socket	No
Includes Light Covers	No
Includes Mounting Bracket(s)	No
Gauge Size	3.9
Tripometer	No
Gauge Number Color	Black
Pointer Color	Racer Red
Includes Sensor Unit	Yes
Includes Wire Harness	Yes
Bezel Included	Yes
Mounting Hardware Included	Yes
Clock Included	Yes
Shape	Round
Memory Storage	Yes
Playback	No
Tachometer Included	No
Sold in Quantity	Each
GTIN Code	843386133449

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