Description Gigglepin Large Cam Gear, precision cut, machined from Billet and case hardened. The redesign of this Large Cam Gear gives increased strength and allows for a more positive engagement when meshing with the Small Cam Gear and Intermediate (7548) Gear. The GP large cam gear is precision cut from EN36. The re-design of the cam gear allows more positive engagement & meshing with the GP Small Cam Gear, which is supplied with the GP Heavy Duty SuperShaft Kit.