When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
ive never used a stock pulley so i dont really know how much of a difference it makes. i got my pulley from mazdatrix and they didnt have any info about the power band changing with this pulley. i honestly didnt think about the weight difference.
now for the flywheel i did notice a big increase in acceleration but it hurts the low rpm cruising.