For Circle Track, road race, and endurance applications, JE Pistons offers the Series 93 wrist pins. These pins are constructed from 9310 high-carbon alloy steel for great stability. All JE pistons are super-finished on both the outside and inside diameters to help reduce piston pin bore wear and minimize fatigue cracking, adding to the overall strength and reliability of the wrist pins. Employing the latest technology and quality control, the Series 93 wrist pins are checked for the tiniest flaws and to ensure the roundness of each pin. JE Pistons Series 93 wrist pins are available in a variety of lengths, diameters, and wall thicknesses. They are specifically developed for use with JE pistons.