This pulley is made from billet 6061-t6 air craft quality aluminum and can be hard anodized for wear resistance.
This is a light weight version of the stock pulley. This was designed for cars with stock location intercoolers. It has provisions for mounting the stock intercooler fan.
This pulley is NOT an under drive pulley. It is the same diameter as the stock pulley. It is designed to reduce rotational weight of the engine.
This stock style aluminum pulley weighs in at aprox 1.5 lbs. this is a full 4.5 lbs lighter than the stock pulley. That is quite a reduction in reciprocating weight
