STM Under-Driven Alternator Pulley with Raised Guides for Evo 4-9 TRS Compatible with AEM Products:

Compatible with AEM Products:

The Swift coilover stacked spring adapter kits are used to stick a flat wire spring on a round wire spring

(1) Zip Tie

(1) Trumpet

STM Under-Driven Alternator Pulley with Raised Guides for Evo 4-9 TRS Compatible with AEM Products: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