Koso MINI 4 RPM Meter

A small tachometer for a custom or classic bar, without pulling the original dash apart.

The Koso MINI 4 is a compact LCD RPM meter. The display is powered by a replaceable CR2032 cell; a 12V supply is used for the backlight only. It records a maximum RPM and has an adjustable RPM warning.*

• Range: 0–20,000 RPM, in 10 RPM steps*
• Input pulse settings: 0.5, 1, 1.5, 2, 2.5, 3, 4, 5, 6*
• Max RPM record and RPM display warning (5,000–20,000 RPM, in 100 RPM steps)*
• Display power: CR2032 (stated battery life about 350 hours)*
• Backlight: 12V DC*
• Written meter size: 61.5 × 33.7 × 15.6 mm, about 30 g*. The dimension diagram on the same listing shows an overall outline of 69.8 × 34.4 × 17.2 mm.

Fitment: Described as suitable for many vehicles once the pulse setting is correct and you have a place to mount it. Aftermarket instrument rules for street use in Australia have not been assessed here. Professional installation is recommended if you are not comfortable with the wiring and pulse setup.

* Manufacturer specifications from the Boisterous / Koso product listing.