VAC Motorsports’ Underdrive Street Pulley sets are a great way to free up horsepower and torque from your S50B32 engine as found in the E36 M3 Evo and early Z3 M.

Manufactured from 6061-T6 billet aluminium and precision balanced and inspected for zero-runout, these pulleys have no adverse affects on reliability, noise or vibration. Made in-house at VAC Motorsports in Philadelphia.

Includes underdrive water pump, power steering and alternator pulleys, along with brand new OE-type Contitech serpentine belt.