Racer can choose from a 3.875" spacer for 75mm belts or 4.125" for 84mm wide blower belts.
The last pictures shows all the hardware that the pistol grip spacer uses that can be purchased at an additional cost if the racer chooses.
Spacer is set up for a .500" stud on the front and a .375" fastener on the rear.
Racer can choose pistol grip width from drop down menu.