STM Under-Driven Alternator Pulley with Raised Guides for Evo 4-9

The STM Evo 4-9 10% under-driven alternator pulley with raised guides was originally designed to help stop the belt from jumping off at high RPM.This new revision makes the pulley 10% under-driven and lighter than stock, which lightens the load on your alternator. Fits all Evo 4/5/6/7/8/9 models and works with OEM and stock replacement belts. Vehicle Fitment: CN9A 1996-1997 Evolution IV CP9A 1998-2000 Evolution V VI CT9A 2001-2006 Evolution VII VIII IX Features: • Billet Aluminum • Hard Anodized to help resist corrosion • Lighter than OEM • 10% under-driven • 10% less wear on your alternator • Works with stock belts • Raised belt guides • STM Products are made in the USA! Purchase Includes: (1) Pulley Shipping Times: Typically ships in 1-4 days. Also Available: STM Evo 7/8/9 Alternator