USE COUPON CODE: SUMMER26
*FREE SHIPPING OVER 300
USE COUPON CODE: SUMMER26
*FREE SHIPPING OVER 300
2013–Present Scion FR-S, Subaru BRZ, Toyota 86
2221
Overview:
The Go Fast Bits Lightweight Alternator Pulley is a precision-engineered upgrade designed specifically for the 2013 and newer Scion FR-S, Subaru BRZ, and Toyota 86 models. This pulley reduces the rotating mass on the engine’s accessory drive system, delivering sharper throttle response and a more lively engine feel. Ideal for enthusiasts seeking improved acceleration and enhanced engine responsiveness without the need for additional modifications or tuning, this pulley offers a straightforward bolt-on performance enhancement.
By significantly lowering the rotational inertia, the engine revs more freely and feels more willing to accelerate, giving drivers a noticeable increase in "urge" during spirited driving. This lightweight pulley is a practical upgrade for anyone looking to extract more dynamic performance from their naturally aspirated boxer engine.
Key Features:
Engineered for performance and reliability, the Go Fast Bits Lightweight Alternator Pulley offers the following key benefits:
Construction & Design:
The Lightweight Alternator Pulley is crafted from a solid billet of 6061-T6 aluminum, a material known for its excellent strength-to-weight ratio and corrosion resistance. Using advanced CNC machining techniques, Go Fast Bits achieves exacting tolerances to ensure a perfect fit and smooth operation. The pulley’s reduced mass lowers the rotational inertia on the engine’s accessory belt system, allowing the engine to rev more freely and respond more quickly to throttle inputs.
This high-quality construction ensures long-lasting durability under demanding driving conditions while maintaining the integrity of the factory accessory drive system. The pulley’s design balances lightweight performance gains with the robustness required for daily driving and spirited use.
Performance & Sound
By reducing the rotating mass on the alternator pulley, this upgrade allows the engine to accelerate more rapidly through the RPM range, resulting in a more responsive and lively driving experience. Drivers will notice a crisper throttle feel and a more willing engine that revs with less effort. While the pulley does not directly alter exhaust sound, the improved engine responsiveness can enhance the overall driving sensation.
Installation & Fitment:
Installation of the Go Fast Bits Lightweight Alternator Pulley is straightforward and designed to be a direct replacement for the factory pulley on 2013 and newer Scion FR-S, Subaru BRZ, and Toyota 86 models. No additional modifications, tuning, or supporting parts are required. The pulley installs using standard hand tools and can typically be completed in under an hour by a competent enthusiast or professional mechanic.
Because the pulley maintains the factory accessory drive geometry and belt routing, there are no adverse effects on alternator performance or accessory operation.
What's Included:
Ideal For:
This lightweight alternator pulley is ideal for owners of the Scion FR-S, Subaru BRZ, and Toyota 86 who want to improve throttle response and engine liveliness without extensive modifications. It suits enthusiasts looking for a simple, reliable, and effective bolt-on upgrade to enhance daily driving and spirited road use. Perfect for naturally aspirated setups and compatible with stock or lightly modified engines.
Go Fast Bits (GFB) is an Australian company specializing in turbo management products, including blow-off valves, boost controllers, diverter valves, and pulley kits. Their products are designed to enhance the performance and reliability of turbocharged engines, targeting both street enthusiasts and track racers seeking improved throttle response and boost control.
PART # 2221
The Go Fast Bits Lightweight Alternator Pulley reduces rotating mass by up to 85%, delivering sharper throttle response and quicker acceleration. Crafted from billet 6061-T6 aluminum with precision CNC machining, it enhances engine responsiveness without affecting accessory performance or requiring tuning. Designed for 2013 and newer Scion FR-S, Subaru BRZ, and Toyota 86 models, this pulley offers a direct bolt-on upgrade that makes the engine feel more lively and willing to rev.
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–Present Scion FR-S, Subaru BRZ, Toyota 86
2221
Overview:
The Go Fast Bits Lightweight Alternator Pulley is a precision-engineered upgrade designed specifically for the 2013 and newer Scion FR-S, Subaru BRZ, and Toyota 86 models. This pulley reduces the rotating mass on the engine’s accessory drive system, delivering sharper throttle response and a more lively engine feel. Ideal for enthusiasts seeking improved acceleration and enhanced engine responsiveness without the need for additional modifications or tuning, this pulley offers a straightforward bolt-on performance enhancement.
By significantly lowering the rotational inertia, the engine revs more freely and feels more willing to accelerate, giving drivers a noticeable increase in "urge" during spirited driving. This lightweight pulley is a practical upgrade for anyone looking to extract more dynamic performance from their naturally aspirated boxer engine.
Key Features:
Engineered for performance and reliability, the Go Fast Bits Lightweight Alternator Pulley offers the following key benefits:
Construction & Design:
The Lightweight Alternator Pulley is crafted from a solid billet of 6061-T6 aluminum, a material known for its excellent strength-to-weight ratio and corrosion resistance. Using advanced CNC machining techniques, Go Fast Bits achieves exacting tolerances to ensure a perfect fit and smooth operation. The pulley’s reduced mass lowers the rotational inertia on the engine’s accessory belt system, allowing the engine to rev more freely and respond more quickly to throttle inputs.
This high-quality construction ensures long-lasting durability under demanding driving conditions while maintaining the integrity of the factory accessory drive system. The pulley’s design balances lightweight performance gains with the robustness required for daily driving and spirited use.
Performance & Sound
By reducing the rotating mass on the alternator pulley, this upgrade allows the engine to accelerate more rapidly through the RPM range, resulting in a more responsive and lively driving experience. Drivers will notice a crisper throttle feel and a more willing engine that revs with less effort. While the pulley does not directly alter exhaust sound, the improved engine responsiveness can enhance the overall driving sensation.
Installation & Fitment:
Installation of the Go Fast Bits Lightweight Alternator Pulley is straightforward and designed to be a direct replacement for the factory pulley on 2013 and newer Scion FR-S, Subaru BRZ, and Toyota 86 models. No additional modifications, tuning, or supporting parts are required. The pulley installs using standard hand tools and can typically be completed in under an hour by a competent enthusiast or professional mechanic.
Because the pulley maintains the factory accessory drive geometry and belt routing, there are no adverse effects on alternator performance or accessory operation.
What's Included:
Ideal For:
This lightweight alternator pulley is ideal for owners of the Scion FR-S, Subaru BRZ, and Toyota 86 who want to improve throttle response and engine liveliness without extensive modifications. It suits enthusiasts looking for a simple, reliable, and effective bolt-on upgrade to enhance daily driving and spirited road use. Perfect for naturally aspirated setups and compatible with stock or lightly modified engines.
Go Fast Bits (GFB) is an Australian company specializing in turbo management products, including blow-off valves, boost controllers, diverter valves, and pulley kits. Their products are designed to enhance the performance and reliability of turbocharged engines, targeting both street enthusiasts and track racers seeking improved throttle response and boost control.
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.
