Perrin Crank Pulley Red 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 upgrade designed specifically for Subaru models equipped with FA and FB engines, including the 2019-2021 WRX, 2015-2016 Impreza, 2015-2019 Legacy, and 2016-2018 Forester. This crank pulley reduces rotational mass by approximately one pound compared to the OEM component, resulting in improved throttle response, increased horsepower, and enhanced torque delivery. It’s an ideal bolt-on modification for Subaru enthusiasts seeking a straightforward way to sharpen engine performance without extensive tuning or modifications.
Manufactured from high-quality 6061T6 billet aluminum, the pulley is anodized in a vibrant red finish that not only adds a visual upgrade under the hood but also provides corrosion resistance and durability. The precision-machined grooves ensure perfect belt alignment with both OEM and aftermarket belts, while the included mounting hub is CNC-machined for exact fitment. Perrin’s engineering approach focuses on reducing unnecessary weight in rotating components to improve engine efficiency and responsiveness, a philosophy that resonates well with Subaru owners who value both performance and reliability.
By reducing the crank pulley’s mass, this upgrade decreases the engine’s rotational inertia, allowing it to rev more freely and respond quicker to throttle inputs. This translates to a more engaging driving experience with noticeable gains in power delivery and torque feel. Additionally, the reduced stress on belts can extend their service life, making this pulley a practical and durable enhancement for daily-driven Subarus as well as spirited weekend rides.
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 and anodized red, it delivers reduced rotational mass and improved throttle response for Subaru enthusiasts seeking a reliable performance upgrade.
-
Brand: Perrin Performance
-
Product: Perrin Crank Pulley Red 2019-2021 WRX / 2015-2016 Impreza / 2015-2019 Legacy / 2016-2018 Forester
-
Part Number: PSP-ENG-104RD
-
Fitment: 2019-2021 Subaru WRX, 2015-2016 Subaru Impreza, 2015-2019 Subaru Legacy, 2016-2018 Subaru Forester (FA/FB engines)
-
Material: 6061T6 Billet Aluminum
-
Finish: Red Anodized
-
Construction: CNC Machined
-
Origin: Made in USA
-
Weight Reduction: Approximately 1 lb lighter than OEM
-
Compatibility: OEM and aftermarket belts
Key Benefits
-
Performance: Reduced rotational mass improves throttle response and engine revving characteristics.
-
Durability: High-quality 6061T6 aluminum with anodized finish resists corrosion and wear.
-
Fitment: Precision CNC machining and included mounting hub ensure exact OEM fitment and easy installation.
-
Reliability: Reduced belt stress extends belt life, minimizing maintenance concerns.
-
Value: Bolt-on upgrade requiring no additional tuning or modifications for immediate benefits.
-
Aesthetics: Vibrant red anodized finish adds a clean, performance-oriented look under the hood.
What's Included
- 1× Perrin Crank Pulley Red
- 1× CNC Machined Mounting Hub
- Installation instructions
Installation & Compatibility
Installation of the Perrin Crank Pulley is straightforward and suitable for enthusiasts with basic mechanical skills, though professional installation is recommended for optimal results. The pulley is a direct bolt-on replacement for the OEM crank pulley on compatible Subaru FA and FB engines and does not require any modifications or tuning adjustments. Standard hand tools are sufficient for installation, and the included mounting hub ensures precise alignment. This upgrade is compatible with OEM and aftermarket belts, but verifying fitment for your specific model year and trim is advised before purchase.
-
Professional Installation: Recommended for best results
-
Modifications Required: None
-
Verify Compatibility: Confirm fitment for your specific Subaru model and year
Shop with confidence at Subimods—your Subaru parts specialists.
