Longacre Racing Products Tachometer Gauge

Longacre Racing Products Tachometer Gauges: Precision RPM Monitoring Built for the Track

Longacre Racing Products has been a trusted name in motorsports instrumentation since 1978, and their tachometer gauges represent exactly the kind of purpose-built engineering racers have come to expect from the brand. Knowing your RPM in real time isn't just useful — on a race track, it's essential. Getting your shift points right, protecting your engine from over-revving, and squeezing maximum performance out of every lap all depend on accurate, fast-responding tachometer data. Longacre designs their tach gauges specifically around those demands.

A Legacy of Racing Instrumentation

Longacre Racing Products was founded by Jack Jaynes in California in 1978, with instrumentation at the very core of its identity. The brand's first product was the Gagelite Warning Kit, and the company quickly expanded into pre-wired gauge and switch panels — establishing the DNA of precision, plug-and-play instrumentation that still defines their tachometer lineup today. In 2017, Longacre joined AFCO Performance Group, further strengthening their engineering resources while keeping their focus squarely on racers at every level, from weekly club events to nationally recognized sprint car tours.

Longacre Tachometer Product Lines

Longacre offers several distinct tachometer gauge families, each engineered for different cockpit environments and installation requirements:

• AccuTech Digital Tachometer: A compact, lightweight unit measuring just 3‑1/2" x 1‑1/2", the AccuTech digital tach delivers accuracy to within 10 RPM and covers a 0–10,000 RPM range, making it compatible with a wide variety of engine types. A built-in high‑RPM warning light helps drivers safeguard against accidental over-revving, and a mounting bracket is included for straightforward installation.
• AccuTech SMi Stepper Motor Memory Tachometer: Available in a larger 4‑1/2" analog format with a black face and bezel, this unit combines stepper motor precision with memory recall — useful for logging peak RPM data after a run without additional equipment.
• SMi Elite Waterproof Tachometer: Offered in a 2‑5/8" diameter round format, the SMi Elite is IP‑66 certified — meaning it's dust‑tight and rated safe against powerful water jets. Its new waterproof design eliminates the need to remove the tachometer before washing the car, a genuine convenience for busy pit environments.
• Digital Elite Waterproof Tachometer: Longacre's flagship digital tach, also at 2‑5/8", pushes the technology further with blue LED digital readouts, programmable warning settings, and a dimmable display for visibility in both daylight and nighttime racing conditions. It also tracks high RPM, average low RPM, and average high RPM — giving drivers and crew a richer post-session data picture.

Why Longacre for Tachometer Gauges?

What separates Longacre's tachometer gauges from generic aftermarket options is the racing-first design philosophy. These gauges are engineered to withstand the vibration, heat, and moisture common in racing environments — not adapted from street-car applications. Whether you're running a dirt oval, a pavement sprint car, or a hot rod on the drag strip, Longacre offers a tachometer format — analog or digital, compact or full-size — designed to mount cleanly and read clearly when it counts most. Browse the full tachometer gauge category to find the right Longacre unit for your build, or explore the complete Longacre Racing Products lineup for complementary instrumentation and chassis setup tools.