Instead of a mechanical throttle stop, the restrictor module plugs in line and restricts the throttle opening electronically. This allows very fast simple installation, and also full throttle opening at the twist grip for a better feel. New examples of the new restrictors are:
863.07.29 Yamaha XSR 700 2016
863.07.31 Triumph Street Twin 900 2016
863.07.27 Honda NC 750 S 2016
863.00.67 Triumph Bonneville 1200 2016