ACT Prolite Aluminum Flywheel

2005–2010 Scion tC, Scion tC2, Scion xB2

600390-2

Overview:

The ACT Prolite Aluminum Flywheel is a high-performance upgrade designed specifically for the 2005 to 2010 Scion tC, as well as compatible with the Scion tC2 and Scion xB2 models. This lightweight flywheel replaces the stock heavy cast iron unit, significantly reducing rotational mass to improve throttle response and acceleration. Ideal for enthusiasts seeking enhanced engine responsiveness without sacrificing drivability, the Prolite flywheel is engineered to deliver a more engaging driving experience on both street and rally applications.

By reducing the flywheel’s inertia, the engine can rev more freely and quickly, making it an excellent choice for drivers who demand sharper throttle control and quicker acceleration. The ACT Prolite Flywheel is also an excellent match when paired with ACT clutch kits, providing a complete drivetrain upgrade for improved performance and reliability.

Key Features:

The ACT Prolite Aluminum Flywheel combines lightweight construction with precision engineering to offer a superior performance upgrade. Key features include:

• Lightest flywheel option from ACT, weighing just 9.8 pounds
• Significantly reduced rotational inertia for faster engine response
• Super rigid design for enhanced strength and durability
• Precision manufactured and dynamically balanced for smooth operation
• Optimized for road and rally racing applications
• Compatible with ACT clutch kits for improved drivetrain synergy
• Direct bolt-on fitment for 2005–2010 Scion tC, tC2, and xB2 models
• Improves acceleration without compromising everyday drivability

Construction & Design:

The ACT Prolite Flywheel is crafted from high-grade aluminum alloy, chosen for its excellent strength-to-weight ratio and heat dissipation properties. This material choice drastically reduces the flywheel’s weight compared to the stock cast iron version, lowering the engine’s rotational mass. The flywheel is precision machined to exacting tolerances and dynamically balanced to ensure smooth, vibration-free operation at high RPMs.

Its rigid construction prevents flexing under high loads, maintaining consistent clutch engagement and improving overall drivetrain reliability. The aluminum surface is designed to work seamlessly with performance clutch discs, ensuring optimal friction and longevity.

Installation & Fitment:

The ACT Prolite Aluminum Flywheel is a direct replacement for the factory flywheel on 2005–2010 Scion tC, as well as Scion tC2 and xB2 models, requiring no modifications for installation. Installation should be performed by a qualified technician familiar with clutch and flywheel replacement procedures. Proper torque specifications and alignment are critical to ensure safe and reliable operation.

For best results, pairing this flywheel with an ACT clutch kit is recommended to maximize performance gains and drivetrain durability.

What's Included:

• ACT Prolite Aluminum Flywheel (Part #600390-2)
• Installation hardware not included (flywheel bolts may need to be reused or replaced)

Ideal For:

This flywheel is ideal for Scion enthusiasts and performance drivers who want to improve throttle response and acceleration without sacrificing daily drivability. It is especially suited for road racing, rally racing, and spirited street driving where quick engine response and reduced rotational mass provide a competitive edge. Drivers upgrading their clutch system will find the Prolite flywheel an excellent complement to ACT clutch kits for a balanced and reliable drivetrain upgrade.