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OVERVIEW: A lightweight flywheel is a great addition to any car, especially turbocharged vehicles. A lighter flywheel drastically reduces the rotating mass attached to your crankshaft, allowing your car to rev and accelerate faster. Turbocharged cars will benefit from a quicker spool as well.
STEEL VS ALUMINUM: There are a variety of flywheel styles and weights available for the 04-07 STi. You may want to consider the ACT Streetlite steel flywheel for daily driven and street cars, as it is lighter, but not so light as be awkward to drive on a daily basis. Some people find extremely light flywheels uncomfortable for daily driven applications. Please call and talk to a sales representative for more information. |
Shipping costs are calculated upon checkout.
FITMENT: 2004-2007 Subaru STi. |
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Fidanza Aluminum Flywheel: |
| Fidanza Aluminum Flywheels are made from 6061 T6 billet aluminum for superior strength and weight reduction. Fidanza flywheels are CNC machined at a constant speed for precise fit and finish, and feature a replaceable 1045 high-carbon steel friction plate with AN military-grade fasteners and a hardened 1050 ring gear. You will never have to replace your flywheel again as you can just swap friction plates, and reinstall. All these features make this a quality lightweight flywheel at a great price. The Fidanza STi flywheel is SFI Certified, and weighs 11 pounds, resulting in no check engine lights or misfire codes. |
Material: Aluminum
Weight: 11 lbs
NOTE: The pilot bearing will fit loosely when installed, but will tighten as the flywheel heats up and the aluminum expands. Please refer to manufacturer's literature for more information. |
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| Fidanza flywheel |
fid110661 | $512 | $355 | 5 in stock | |
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ACT StreetLite Steel Flywheel: |
The ACT Streetlite flywheel is made from premium quality forged Chrome-Moly steel, CNC machined, and balanced. It also features an induction-hardened integral ring gear, and is durable and thick enough to be resurfaced. Certified to SFI Specification 1.1.
Material: Steel
Weight: 15 lbs |
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| ACT StreetLite flywheel |
act600235 | $411 | $329 | Usually ships next day | |
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Spec Aluminum Flywheel: |
| SPEC aluminum flywheels are CNC machined and exceed SFI standards for high stress racing applications. These units are recommended for highly modified street or racing vehicles, and for mildly modified street cars that can benefit from reduced rotating mass without the loss of daily drivability. The body of the flywheel is made of tempered aluminums, either 6061 T6 or 2024 T3, for ultimate strength and lightest possible weight. |
The 1/4 inch thick friction plate is a 1050 high carbon alloy, for incredible durability with any friction disc material, even iron. The plates are secured to the body by aerospace fasteners. The ring gears are pressed on and secured with grade 10 fasteners. The gear is also heat treated for added durability and longevity.
Material: Aluminum
Weight 11 lbs. |
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| Spec Aluminum flywheel |
SpecSU30A | $479 | $431 | Usually ships in 1-2 Days | |
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Clutch Masters Aluminum Flywheel: |
Made from 6061-T6 aircraft grade billet aluminum with a replaceable high-carbon steel friction surface and an OEM steel ring gear secured by bolts, Clutch Masters flywheels are some of the finest available on the market. Each unit is certified to meet SFI Spec 1.1 or 1.2 and is backed by a limited lifetime warranty.
Material: Aluminum
Weight: 11 lbs. |
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| ClutchMasters flywheel |
cmFW-STI-AL | $495 | $421 | Usually ships next day | |
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