If you’re concerned about redline RPM and the possibility of overreving the engine, the FAST E6 Ignition is available with an adjustable rev limiter. Not only is our rev limiting technology extremely accurate, it is the smoothest limit available thanks to our advanced sequential limiting technology. The RPM limit is easily set with two rotary dials on the side of the ignition and can be adjusted within 100 RPM increments all the way through 9,900 RPM.