Eccentric Shaft Pulley Hub

Eccentric Shaft Pulley Hub, a high-performance, 4140 chromoly hub designed for Mazda rotary engines (FC/FD models), featuring a black nitride finish for corrosion resistance and durability. These hubs are designed for use with underdriven multi-rib pulley kits.

• Material: 4140 Chromoly steel for superior strength.
• Finish: Black nitride coating.
• Application: Mazda Rotary FC/FD Eccentric Shafts.
• Usage: Often part of a complete underdriven, multi-rib, or racing pulley kit setup.

The hub is designed to securely mount the pulley to the front of the engine’s eccentric shaft, reducing belt slip and improving reliability under racing conditions.