Description

Arospeed Adjustable Cam Pulley SR20 NISSAN SILVIA. Arospeed Adjustable Cam Pulley is made by 6061-T6 billet aluminium.
Before a final heat treatment the alloy is ductile and malleable;               
after heat treatment a reaction between the aluminum and magnesium produces increased hardness and tensile strength.     
Material of both pulley part of an outer, and an inner plate portion to realize super-lightweight body.