Just a push of the button and an instant gear change takes place, resulting in significantly reduced elapsed times.
M*R*E air shifters come in several configurations;
DELUXE. This is the one the pros use. It comes complete with an NHRA / Prostar / IDBA legal DOT approved air bottle which is mandatory at all NHRA race tracks. It has the larger heavy duty switching valve / shift cylinder assembly. It includes a handlebar pushbutton assembly with air gauge and filler, plus all lines, fittings, etc. necessary for installation. The optional 3" inch shift cylinder" is necessary on some Harley Davidson race engine chassis combinations.