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ACT Streetlite Steel Flywheel 2004-2021 STI

Current price $422.00
Original price $541.00
Original price $541.00 - Original price $541.00
Original price $541.00
$422.00 - $422.00
Current price $422.00
-22% -22%
14 In Stock, Usually Ships within 1-2 Business Days
SKU 600235
by ACT

DETAILS

ACT flywheels are lighter, stronger and safer than stock cast flywheels to meet the needs of both enthusiast and hard core racer. Material is properly distributed for maximum strength, lower inertia, good heat tolerance and rigidity. Precision machined threads will not easily strip out or get damaged like those found on aluminum flywheels. ACT engineers XACT flywheels using the latest CAD and FEA (finite element analysis) software to evaluate all design alternatives to get the best results possible. By hot forging chrome-moly steel, each flywheel yields an ultra fine centralized grain structure that is superior in strength to any other manufacturing method. All flywheels are CNC machined and dynamically computer balanced for super smooth high RPM reliability. 

This Flywheel is meant to replace your OEM Subaru flywheel. StreetLite Flywheels are recommended for Street Use. This StreetLite Flywheel is 15.0 LBS.


Brand Logo
ACT Performance Flywheels

ACT Performance Flywheels

ACT Performance Flywheels are built for strength, durability, and precision using a one-piece chrome-moly forging, which surpasses billet steel, aluminum, and cast iron in performance. Featuring an integral ring gear that is induction-hardened for maximum gear life, these flywheels are engineered for optimal mass distribution, ensuring excellent strength, heat dissipation, and reduced inertia. CAD-designed, CNC-machined, and computer-balanced, they deliver smooth operation across all RPM ranges. Heat-treated and tempered, ACT Performance Flywheels are crafted for reliability and precision, making them an ideal choice for high-performance applications.

DESIGN AND ENGINEERING

DESIGN AND ENGINEERING

Advanced Clutch Technology designs, engineers and develops products by leveraging decades of track and performance street experience. Advanced CAD, FEA simulation and CAM tools help ensure highly optimized performance, reliability and repeatability. These key advantages are produced by combining the best engineering and design methodologies with the latest in materials and manufacturing techniques.

Customer Reviews

Based on 9 reviews
67%
(6)
11%
(1)
11%
(1)
0%
(0)
11%
(1)
J
Jose Luis Garcia
Fast shipping and a great product

It did not mess with my idle and rpm drop between shifts are noticeably quicker.

Jose,

Thank you for your 5 Star Review! We are pleased to hear the ACT Streetlite Flywheel did not interfere with your idle or RPM and worked perfectly for your needs.

Regards,

C
Christian Candelaria

Feels amazing

Thank you for your 5 Star Review, Christian.

We are happy to hear the flywheel feels amazing and that you are pleased with your purchase.

Regards,

N
Nicholas Buczkowski

Perfect for street driving

Nicholas,

Thank you for your 5 Star Review! The ACT Streetlite Steel Flywheel for the 2004-2021 STI is a fantastic choice for street driving. Its lighter weight helps improve throttle response and acceleration while maintaining drivability, making it a perfect balance between performance and everyday usability.

Regards,

L
Lamberto
Good to pair with new clutch

bought the clutch and the flywheel together just to get it out the way.

Lamberto,

Thank you for choosing the ACT Streetlite Steel Flywheel for your STI! We are glad to hear that it paired well with your new clutch! We appreciate your 5 Star Review and hope you enjoy your upgraded performance!

Regards,

V
Volodymyr Soroka

Good

Volodymyr,

We appreciate your 5 Star Review of the ACT Streetlite Steel Flywheel! Thank you for choosing Subimods!

Regards,

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