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Ignition Box

This box is the standard of the industry.  The new 233-6425 has 2 rotary dials to set the limit in 100 RPM increments and incorporates a sealed connector for all the wiring.  Additional rev modules for the discontinued 233-6420 are still available separately.  Comes with a built-in rev limiter and plug-in module to change the RPM limits in seconds.  Rev-limiting modules in 100 RPM increments with 3000, 6000, 7000, and 8000 rpm modules supplied in the box.  Some tachometers need MSD tach adapter for ignition box compatibility.

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