Plex Knock Monitor V2

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  • Regular price £900.00
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Often quoted as the “ultimate knock detection device”, the PLEX KNOCK MONITOR V2 has been established as the preferred choice of professional tuners and engine builders alike.

With best-in-class audio quality, an embedded 2.3” anti-glare LCD display and advanced audio filtering, it delivers reliable audio and visual knock detection even for the most challenging of projects as it effectively detects knock per cylinder and throughout the RPM range.

Available in single and dual input versions it comes bundled with a advanced PC analysis and configuration SW.

Key Features

Real-time Knock Graph

With a 2.3” LCD display, besides listening to knock, you can also view the spikes in real time on the device along the RPM curve.

Per-Cylinder Detection

An ignition trigger input allows you to detect knock per cylinder (up to 8) without the need for additional knock sensors, thus maximising performance of each cylinder individually.


Advanced Audio Filtering

Steep 30 dB band and high pass filters that isolate knock from background noise can be selected for different type of engines.


Built-in Freq. vs Bore Size Calculator

The handy on-screen engine bore size reference lets the user select the knock frequency effortlessly by simply choosing your cylinder size from an array of options.


Super Bright LED Warning Function

Configurable 2-level knock intensity alarm will get your attention in the dyno room even without having the headset on.


Dedicated Audio DSP

On dual bank engines the audio DSP allows for dedicating one audio output channel per bank or mixing depending on user preferences.


Knock Threshold vs RPM Function

Accurately detect knock throughout the engine RPM range. View real time knock graph on screen and calibrate the threshold easily via the 4 dedicated keys.


Powerful PC Analysis SW

Capture 3-dimensional knock information and log knock count with knock level per cylinder versus RPM and load or perform real-time knock detection.

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