2013–2020 Subaru BRZ / 2017–2020 Toyota 86 / 2013–2016 Scion FR-S
PSP-ENG-121RD
Overview:
The Perrin Alternator Pulley is a precision-engineered upgrade designed to enhance the efficiency and responsiveness of your Subaru BRZ, Toyota 86, or Scion FR-S. Crafted from lightweight 6061-T6 aluminum, this pulley reduces the rotational mass compared to the factory steel unit, allowing your engine to rev more freely and deliver quicker throttle response. Whether you are a daily driver seeking subtle performance improvements or a track enthusiast aiming for optimized engine dynamics, this pulley offers a reliable and effective solution without compromising your vehicle’s charging system functionality.
Installation is straightforward, as the pulley is designed to be a direct replacement for the OEM part, requiring no additional modifications or tuning. This makes it an ideal upgrade for anyone looking to improve engine response with minimal effort.
Key Features:
The Perrin Alternator Pulley combines high-quality materials and thoughtful design to deliver performance benefits while maintaining durability and fitment precision.
Construction & Design:
The pulley is precision-machined from high-grade 6061-T6 aluminum, a material known for its excellent strength-to-weight ratio and resistance to wear. The CNC machining process ensures tight tolerances and a perfect fit, matching the OEM pulley’s dimensions exactly. The anodized finish not only enhances corrosion resistance but also provides a sleek, durable surface that withstands the harsh conditions under the hood.
By reducing the pulley’s mass, the engine experiences less rotational inertia, which translates to quicker revving and improved throttle response. This subtle enhancement supports better engine efficiency without compromising reliability or requiring additional engine management adjustments.
Installation & Fitment:
The Perrin Alternator Pulley is designed as a direct replacement for the factory pulley on the following vehicles:
Installation is simple and straightforward, requiring only standard hand tools. No cutting, drilling, or special tuning is necessary, making it accessible for both professional installers and knowledgeable enthusiasts. The pulley fits perfectly with OEM and aftermarket belts, ensuring seamless integration with your vehicle’s existing components.
What's Included:
Ideal For:
This alternator pulley upgrade is ideal for:
PERRIN Performance is an enthusiast-focused brand known for bolt-on performance and chassis upgrades for platforms like Subaru and other sport compacts. Their catalog spans intake and turbo support, drivetrain and shifter feel, and handling accessories—built for drivers who want tighter response and track-ready reliability without sacrificing daily drivability.
PART # PSP-ENG-121RD
Boost your Toyota 86 or Subaru BRZ’s throttle response with the PERRIN Alternator Pulley. Made from lightweight, CNC-machined 6061-T6 aluminum, it reduces rotational mass for quicker revs and improved engine efficiency. Direct-fit design ensures easy installation with no modifications needed, maintaining full charging system function. Perfect for track builds or daily driving upgrades.
ETA stands for Estimated Time of Arrival. The date shown is calculated using our Available-to-Promise (ATP) system, which tracks real-time supplier commitments to determine when a product is expected to be available for delivery. Specifically, the date is calculated by adding 9 business days from the date a supplier has committed to ship the product, representing a worst-case scenario for when we can expect to receive inventory.
Please note: The ETA is an estimate, not a guarantee. While we work closely with our suppliers to keep dates as accurate as possible, delays due to shipping carriers, weather, customs, or supplier-side issues may occasionally push the actual arrival beyond the date shown. Likewise, inventory may arrive sooner than the ETA in many cases. If you would like to be notified for when this item arrives, sign up for our back in stock notifications!
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2013–2020 Subaru BRZ / 2017–2020 Toyota 86 / 2013–2016 Scion FR-S
PSP-ENG-121RD
Overview:
The Perrin Alternator Pulley is a precision-engineered upgrade designed to enhance the efficiency and responsiveness of your Subaru BRZ, Toyota 86, or Scion FR-S. Crafted from lightweight 6061-T6 aluminum, this pulley reduces the rotational mass compared to the factory steel unit, allowing your engine to rev more freely and deliver quicker throttle response. Whether you are a daily driver seeking subtle performance improvements or a track enthusiast aiming for optimized engine dynamics, this pulley offers a reliable and effective solution without compromising your vehicle’s charging system functionality.
Installation is straightforward, as the pulley is designed to be a direct replacement for the OEM part, requiring no additional modifications or tuning. This makes it an ideal upgrade for anyone looking to improve engine response with minimal effort.
Key Features:
The Perrin Alternator Pulley combines high-quality materials and thoughtful design to deliver performance benefits while maintaining durability and fitment precision.
Construction & Design:
The pulley is precision-machined from high-grade 6061-T6 aluminum, a material known for its excellent strength-to-weight ratio and resistance to wear. The CNC machining process ensures tight tolerances and a perfect fit, matching the OEM pulley’s dimensions exactly. The anodized finish not only enhances corrosion resistance but also provides a sleek, durable surface that withstands the harsh conditions under the hood.
By reducing the pulley’s mass, the engine experiences less rotational inertia, which translates to quicker revving and improved throttle response. This subtle enhancement supports better engine efficiency without compromising reliability or requiring additional engine management adjustments.
Installation & Fitment:
The Perrin Alternator Pulley is designed as a direct replacement for the factory pulley on the following vehicles:
Installation is simple and straightforward, requiring only standard hand tools. No cutting, drilling, or special tuning is necessary, making it accessible for both professional installers and knowledgeable enthusiasts. The pulley fits perfectly with OEM and aftermarket belts, ensuring seamless integration with your vehicle’s existing components.
What's Included:
Ideal For:
This alternator pulley upgrade is ideal for:
PERRIN Performance is an enthusiast-focused brand known for bolt-on performance and chassis upgrades for platforms like Subaru and other sport compacts. Their catalog spans intake and turbo support, drivetrain and shifter feel, and handling accessories—built for drivers who want tighter response and track-ready reliability without sacrificing daily drivability.
Free Standard Shipping on orders over $250. Select “Free Shipping” at checkout.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
Free Standard Shipping on orders over $250. Select “Free Shipping” at checkout.
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.
