CMI Stainless Steel Crank Pulley Bolt & Washer are machined from 17-4 Stainless H-900 with a Rockwell hardness of 40-44 RC ensuring durability and strength.

The unique design allows installation versatility using either a 1/2" Drive Rachet or a 1" External Hex Wrench or Socket. The bolt is crafted with precision-cut 'J' threads and a controlled root radius to prevent cracking.

The large washer (6.35mm thick x 42.6mm OD) features a machined step to ensure proper centering of the crank pulley.