Unorthodox crankshaft underdrive pulleys for Ford Probe are made of CNC machined 6061-T6 billet aluminum with tolerances of .001". A Unorthodox crankshaft underdrive pulleys for Ford Probe offers a total of 15% power gain from the underdrive and 85% power gain comes from their light weight. Made of CNC machined billet aluminum. The photo above shows a typical crankshaft pulley, your exact application may look different. 1993-1995 2.0L gains 5-9 horsepower. 1993-1997 2.5L gains 8-12 horsepower. Probe underdrive pulley Unorthodox UltraSCOLORS:: SILVER APPLICATIONS:: 1993-1995 PROBE 2.0L DOHC 16 VALVE1993-1997 PROBE 2.5L DOHC 24 VALVE We welcome CANADIAN customers! For ordering information, click on "Orders To Canada" at the top left side of this page. PAYMENT METHODS: PayPal, Visa, Mastercard, Discover, American Express, money orders.