So do these things do alot? and what is it suppost to do besides be lighter and smaller?


1998 Sunfire, 2.2L auto

An underdrive pulley basically is an pulley that is smaller in diameter and weights less than your stock pulley. By it weighing less, it's less weight and less stress to move your crank pulley which will slightly increase your revving ability. By it being smaller in diameter, it will reduce the amount of power going to accessories which will also help in gaining power to the motor.

Hope this helps...



www.kronosperformance.com / 732-742-8837

an underdrive pulley is also a great compliment to a lightweight flywheel



"Freedom 'ought to have its limits"-George W. Bush may 31 1999 (who voted for this idiot?)