Pulley Kit

It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM in a second or two saps a measurable amount of torque. GFB Lightweight Pulleys reduce inertia by up to 85%, so most of the torque that used to accelerate the pulley can now be applied to the wheels.

Additional Information

Suits WRX/STi MY94-07, Forester MY98-07, Legacy MY03-07).

Application Summary

Subaru Suits WRX/STi MY94-07, Forester MY98-07, Legacy MY03-07)

Part Type

Engine Under Drive Pulley Kit

• SHARPER THROTTLE RESPONSE AND "URGE", ENGINE FEELS MORE LIVELY AND WILLING TO REV, UP TO 85% ROTATING INERTIA REDUCTION, WILL NOT CAUSE ENGINE DAMAGE, NO NEGATIVE EFFECTS ON DRIVEN ACCESSORY PERFORMANCE

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Product Downloads

#	Document Type	Download
1.	Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Reference Information

2-piece underdrive pulley kit (Crank and alternator pulleys & belts. ) Suits WRX/STi MY94-07, Forester MY98-07, Legacy MY03-07)