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

Compatible with AEM Products:

• 19" Overall Height with Mounting Posts

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

This is the same ignition system that can be found on ALL of the high horsepower Evo's at Buschur Racing including the 9sec daily drivers

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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