JayCee Cog pulleys for the "Do it yourself race car builder." Made of 6061-billet aluminum. Upper pulley fits most aftermarket alternators with a .592" shaft. Lower pulley indexes off the stock pulley. (Must use a longer crank pulley bolt, PN JC-8625-0, not included.) Alternators can be driven 1 to 1 or under driven. Pulleys come hard anodized black to prevent premature wear. Cog belt sold separately.
