aFe Power's new power pulley brings performance engineering to your BMW M5. This 4.124" diameter power pulley is a complete bolt-on kit, including the pulley, bolts, and belts. aFe???s power pulleys are CNC machined out of billet aluminum and black anodized for that aggressive look under the M5???s hood.
This power pulley does not modify factory harmonics or dampening. In recent Dyno testing this power pulley produced 5 HP and 6lbs/ft. torque. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice.
Advanced Flow Engineering, Inc. (aFe) produces high flow, high
performance air filters & intake systems for the automotive
industry. Founded in April, 1999, aFe was created to address an
obvious need in the automotive aftermarket industry: a lack of
choice for a high performance aftermarket air filter. We are a team
of engineers, machinists, production and sales people who believe
in the product we design. We each have years of experience in our
respective positions and together work to ensure that we have the
best product on the market. Our purpose was not just to be another
vendor that offers air filters, we chose to pay attention to those
finer details that set an aFe filter apart from the
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