Perrin Performance Alternator Pulley for Subaru WRX/STI/Forester Lightweight ...

Perrin Performance Lightweight Alternator Pulley — Subaru WRX / STI / Forester Brand: Perrin Performance Upgrade your Subaru's throttle response and parasitic drag with the Perrin Performance Lightweight Alternator Pulley. Precision-machined from high-grade aluminum and anodized in striking blue, this pulley reduces rotational mass to improve engine efficiency and responsiveness for 2006–2014 WRX, 2007–2021 STI, and 2006–2013 Forester applications. Key Benefits Reduced rotational inertia for quicker engine revs and crisper throttle response Improved accessory drive efficiency with durable, balanced construction Lightweight, high-strength aluminum with corrosion-resistant blue anodize Direct bolt-on fit designed for WRX, STI, and Forester OEM alternators Track and street proven — trusted by enthusiasts and tuners Product Details Fits: 2006–2014 Subaru WRX, 2007–2021 Subaru STI, 2006–2013 Subaru Forester Material: CNC-machined aluminum Finish: Blue anodized Includes hardware for installation Why choose Perrin? Perrin Performance combines precision engineering with durable materials to deliver real, noticeable performance gains without complex modifications. Ideal for enthusiasts seeking better engine response and reduced parasitic loss.