MSD Performance 7551 - Launch Rev Limiter Switch Box, for PN 7530

This handy controller lets you change the launch rpm setting instantly for last second changes in track conditions. They plug into the RS232 computer harness and have two rotary dials for adjustments.

• Change Rpm setting manually
• Great for last minute changes in track conditions
• Through the 9-Pin harness
• Two control knobs-launch settings