Speedhut 2-5/8" 12K RPM Shift-light Tachometer (R25-TC5-REV)
The Speedhut 2-5/8" 12K RPM Shift-light Tachometer (R25-TC5-REV) is a precision instrument designed to provide accurate and real-time engine speed readings for a wide range of vehicles. Compatible with standard spark plug ignition systems and engines with 1 to 12 cylinders, this gauge offers a clear and reliable way to monitor your engine's performance up to 12,000 RPM. Its integrated shift light allows drivers to optimize gear changes for peak performance and efficiency. The tachometer's 2 5/8 inch size ensures it fits seamlessly into many gauge setups, requiring a 2.67 inch (68mm) mounting hole. Included with the tachometer are all the necessary components for installation, making it a straightforward upgrade for any enthusiast looking to enhance their vehicle's instrumentation.
KEY FEATURES AND BENEFITS:
Accurate RPM Display: Provides real-time engine speed readings up to 12,000 RPM.
Integrated Shift Light: Programmable to alert drivers at specific RPM thresholds for optimal gear shifting.
Wide Engine Compatibility: Works with 1 to 12 cylinder engines using standard spark plug ignition signals.
Easy Fitment: 2 5/8 inch size fits into a 2.67 inch (68mm) mounting hole with included mounting ring.
Complete Wiring Included: Comes with an 8 ft tachometer harness and 3 ft power & lighting harness for LED illumination.
Gauge Type: Tachometer
Standard or Metric: Both Standard and Metric units are supported
Tachometer Signal Type: Standard spark plug ignition systems
Compatibility: 1-12 cylinder engines
Range: 12,000 RPM
Size: 2 5/8 inch
Hole Size: 2.67 inches (68mm)
Internal Shift Light: Yes
Gauge Mounting Ring: Included
8 ft Tachometer Harness – for LED Lit Gauges (1 Wire 2 Pin Connector)
3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
Prepare the Mounting Location: Identify a suitable location on your dashboard or instrument panel with a 2.67 inch (68mm) diameter opening.
Connect the Power and Lighting Harness: Attach the 3 ft harness to the terminals on the back of the tachometer. Connect the power wire to a 12V switched source, the ground to chassis ground, and lighting wire to the vehicle's lighting circuit if desired.
Connect the Tachometer Signal Harness: Connect the 8 ft harness to the signal terminal on the back of the tachometer. Attach the other end to the ignition coil’s negative terminal or the designated tach output wire.
Mount the Tachometer: Insert the unit into the mounting hole and secure it using the included spin-lock mounting ring.
Test the Connections: Turn on the ignition to power the tachometer. Start the engine and verify accurate RPM readings and proper shift light functionality.
BENEFITS OF USING THE SPEEDHUT 2-5/8" 12K RPM SHIFT-LIGHT TACHOMETER (R25-TC5-REV):
Precise Engine Monitoring: Helps maintain optimal engine performance and prevents over-revving.
Shift Optimization: Internal shift light enhances acceleration by signaling the ideal shift point.
Simplified Installation: Includes all essential wiring and hardware for an easy setup process.
Reliable Readability: Offers clear, visible readings for confident driving in any condition.
Monitors engine speed in real-time up to 12,000 RPM.
Features a customizable internal shift light for better gear transitions.
Compatible with 1 to 12 cylinder configurations.
Supports standard spark plug ignition systems.
Designed to fit 2 5/8 inch (68mm) gauge openings.
Comes with a spin-lock mounting ring for secure installation.
Includes both power/lighting and tachometer signal harnesses.
Displays values in both standard and metric units.
Ensures clear visibility and accurate engine speed feedback.
Product identification
- Brand: Speedhut
- Model / MPN: R25-TC5-REV




