Porsche Underdrive Crankshaft Pulley Billet Aluminum Hard Anodized 99610211563LN SMC11008301--S20 911 GT3 (2007-2008)

911 GT3 (2007-2008)

and Audi models

Porsche Set of four aluminum strips for door opening

Short velocity stack inside for better performance

Porsche Underdrive Crankshaft Pulley Billet Aluminum Hard Anodized 99610211563LN SMC11008301--S20 911 GT3 (2007-2008)Porsche The Flat 6 Innovations Billet Aluminum Hard Anodized M96 M97 Underdrive Crankshaft Pulley manufactured by LN Engineering offers increased horsepower and torque by reducing parasitic losses by slowing down the belt driven accessories. The smaller diameter provides sufficient speed at idle to allow the alternator, power steering, and water pump to operate properly with no ill effects caused by other underdrive pulleys that have further reduced