Perrin Crank Pulley Black 2019-2021 WRX / 2015-2016 Impreza / 2015-2019 Legacy / 2016-2018 Forester | Lightweight 6061T6 Aluminum | Performance Crank Pulley
Overview
The Perrin Crank Pulley is a precision-engineered performance upgrade designed for select Subaru models equipped with FA and FB series engines, including the 2019-2021 WRX, 2015-2016 Impreza, 2015-2019 Legacy, and 2016-2018 Forester. This crank pulley reduces rotational mass by approximately 1 pound compared to the OEM component, resulting in improved throttle response, increased horsepower, and enhanced torque delivery. It’s an ideal bolt-on solution for Subaru enthusiasts seeking tangible performance gains without extensive engine modifications.
Manufactured from durable 6061T6 billet aluminum and finished with a sleek black anodized coating, the Perrin crank pulley combines lightweight construction with long-lasting corrosion resistance. The pulley features precision-machined grooves that maintain perfect alignment with OEM and aftermarket belts, ensuring consistent belt life and reliable operation. The included mounting hub streamlines installation, reflecting Perrin’s commitment to practical, high-quality performance parts tailored specifically for Subaru platforms.
By reducing the rotational inertia of the crank pulley, this upgrade allows the engine to rev more freely and respond more quickly to throttle inputs. For Subaru owners, this translates to a more engaging driving experience with improved acceleration feel and smoother power delivery. The Perrin crank pulley is a straightforward enhancement that complements other performance modifications and tuning efforts, making it a valuable addition to any Subaru performance build.
Features & Specifications
This Perrin Performance crank pulley is engineered for Subaru FA and FB engine platforms, including WRX, Impreza, Legacy, and Forester models. Constructed from lightweight 6061T6 billet aluminum with a black anodized finish, it delivers reduced rotational mass and enhanced throttle response for Subaru enthusiasts seeking improved engine responsiveness and power.
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Brand: Perrin Performance
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Product: Perrin Crank Pulley Black
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Part Number: PSP-ENG-104BK
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Fitment: 2019-2021 WRX, 2015-2016 Impreza, 2015-2019 Legacy, 2016-2018 Forester (FA/FB engines)
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Material: 6061T6 Billet Aluminum
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Finish: Black Anodized
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Construction: CNC Machined
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Origin: Made in USA
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Weight Reduction: Approximately 1 lb lighter than OEM
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Compatibility: Compatible with OEM and aftermarket belts
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Installation: Includes mounting hub for simplified installation
Key Benefits
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Performance: Reduced rotational mass improves throttle response and engine acceleration.
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Durability: CNC-machined 6061T6 aluminum ensures long-lasting strength and corrosion resistance.
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Fitment: Precision-machined grooves maintain perfect belt alignment for reliable operation.
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Quality: Black anodized finish provides a sleek appearance and protects against wear.
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Value: Bolt-on upgrade that delivers noticeable power and torque gains without complex modifications.
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Compatibility: Designed specifically for Subaru FA and FB engine platforms for assured fitment.
What's Included
- 1× Perrin Crank Pulley Black
- 1× Mounting Hub
- Installation instructions
Installation & Compatibility
Installation of the Perrin Crank Pulley is straightforward and can be completed by experienced DIY enthusiasts with basic hand tools. The included mounting hub simplifies the process, ensuring proper alignment and fitment. No special modifications are required, and the pulley is designed to work seamlessly with OEM and aftermarket belts. While professional installation is not mandatory, it is recommended if you are unfamiliar with crank pulley removal and torque specifications. This upgrade does not require engine tuning but pairs well with other performance modifications for optimal results.
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Professional Installation: Recommended for those without mechanical experience
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Modifications Required: None
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Verify Compatibility: Confirm fitment for your specific Subaru model and engine variant
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