VAC Motorsports Street Underdrive Pulleys (M50)


VAC Motorsports’ Underdrive Street Pulley sets are a great way to free up horsepower and torque from your M50 engine as found in the late E34 520i/525i and early E36 320i/325i.

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.

Claimed increases of 10hp and 8lb ft at the wheels on an otherwise standard engine. Please select which brand alternator your vehicle has in the options. Includes underdrive water pump, alternator and power steering pulleys, along with brand new OE-type Contitech serpentine belt.

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