The Stack ST430 range of tachometers offers the unique STACK stepper motor movement with a peak RPM recall, 25 minutes of data recording which plays back on the gauge, & the facility to run an external shift light.
The Stack ST430 can be configured to work on most negative earth ignitions as well as magneto ignition systems by using the supplied switch kit.
A peak RPM recall function comes as standard with all Stack ST430 tachometers as does a built in, user configurable, shift-light driver circuit for use with an external shift light (which must be purchased separately).
The Stack ST430 range require a 125mm cut out for mounting (with a 65mm rear clearance) making them directly interchangeable with the majority of aftermarket tachometers as well as many OE units