Accessory Drive Pulleys

Accessory drive pulleys are often referred to a underdrive pulleys refering to crankshaft or accessory pulley (such as an alternator pulley) that is designed to drive a vehicle's accessories at a slower rate than stock. PitStopUSA.com carries accessory pulleys that can be larger than the stock pulley, or a crankshaft pulley that is smaller than the stock crankshaft pulley, even though the accessory may not necessarily be underdriven with respect to the crankshaft pulley.

Typical usage scenario