Depending on the version, the shifter allows the instantaneous passing of one or several gears.
Available in several versions effigear has developed a modular shifter in order to answer to users requirements :
Trigger shifter : adaptation of a standard shifter (push-push).
Turnshift : 132° of rotation for shifting 9 gears.
The mechanism may be modified simply by changing few elements on the shifter, each elements needed for the modification may be include by option.