Cusco Big Bore Throttle Body
2013–2016 Scion FR-S, 2017–2020 Toyota 86, 2013–2020 Subaru BRZ 2.0L FA20 4U-GSE Engine
965 725 A
Overview:
The Cusco Big Bore Throttle Body is a precision-engineered performance upgrade designed specifically for the 2.0-liter FA20 4U-GSE engine found in the Scion FR-S (2013–2016), Toyota 86 (2017–2020), and Subaru BRZ (2013–2020). This direct bolt-on component replaces the factory throttle body to enhance air intake efficiency, resulting in improved throttle response and increased engine output.
Ideal for enthusiasts seeking a straightforward, plug-and-play modification, the Cusco Big Bore Throttle Body delivers noticeable gains in torque and horsepower without requiring ECU tuning or additional modifications. It is engineered to maintain full compatibility with the factory engine management system, ensuring seamless integration and reliable operation.
Key Features:
Designed to optimize airflow and engine responsiveness, the Cusco Big Bore Throttle Body offers the following benefits:
- +2mm larger bore diameter compared to the factory throttle body for increased volumetric efficiency
- Improved air intake flow for enhanced combustion and power delivery
- Sharper, more immediate throttle response for a more engaging driving experience
- Direct bolt-on replacement with 100% OEM fitment—no modifications required
- Compatible with the factory ECU and wiring harness for plug-and-play installation
- Includes a new gasket to ensure a proper seal and prevent air leaks
- No core exchange necessary, simplifying the upgrade process
- Manufactured by Cusco, a trusted name in performance automotive parts
Construction & Design:
The Cusco Big Bore Throttle Body is crafted from high-quality materials to withstand the rigors of daily driving and spirited performance use. Its precision-machined bore ensures smooth airflow with minimal turbulence, while the robust construction guarantees durability and long-term reliability. The design maintains OEM mounting points and sensor compatibility, preserving factory drivability and emissions compliance.
Performance & Sound
By increasing the throttle body's bore size, this upgrade allows the engine to breathe more freely, resulting in improved volumetric efficiency. Drivers will experience enhanced torque and horsepower across the powerband, along with a more responsive and crisp throttle feel. While the throttle body itself does not significantly alter exhaust sound, the improved engine response contributes to a more connected and engaging driving experience.
Installation & Fitment:
Installation is straightforward and requires no special tools or modifications. The Cusco Big Bore Throttle Body is a direct bolt-on replacement for the factory unit on the Scion FR-S (2013–2016), Toyota 86 (2017–2020), and Subaru BRZ (2013–2020) equipped with the 2.0L FA20 4U-GSE engine. It retains full compatibility with the factory ECU and wiring harness, allowing for a true plug-and-play upgrade without the need for tuning or additional calibration.
What's Included:
- Cusco Big Bore Throttle Body (Part #965 725 A)
- New throttle body gasket
- Installation instructions
Ideal For:
This throttle body upgrade is perfect for enthusiasts and drivers who want to enhance their vehicle’s throttle response and power output without extensive modifications. It suits daily drivers, weekend warriors, and track enthusiasts alike who own a Scion FR-S, Toyota 86, or Subaru BRZ with the FA20 engine and seek a reliable, OEM-quality performance improvement.
