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.

AROSPEED Harden Lightening Crankshaft Pulley is different with others Aluminium crank pulley.
It is using 6061 Aluminium and over-coating a harden layer.
This harden effect will protect the pulley and become wear-resisting.
The latest technology that we can let the harden effect to become coloured.
NEW Diamond coat will last longer than Golden Harden more then 30%.