{"product_id":"exedy-lightweight-flywheel-2004-2014-impreza-2006-2009-legacy-2015-2019-wrx-sti-subaru","title":"EXEDY Lightweight Flywheel – 2004–2014 Impreza \/ 2006–2009 Legacy \/ 2015–2019 WRX STI (Subaru)","description":"\u003cp\u003eThe \u003cstrong\u003eEXEDY Lightweight Flywheel – 2004–2014 Impreza \/ 2006–2009 Legacy \/ 2015–2019 WRX STI (Subaru)\u003c\/strong\u003e is a focused driveline solution for 2004–2014 Impreza \/ 2006–2009 Legacy \/ 2015–2019 WRX STI (Subaru), aimed at owners who want enthusiast street, autocross, HPDE, and modified performance builds without piecing together mismatched clutch components.\u003c\/p\u003e\u003ch3\u003eManufacturer Background\u003c\/h3\u003e\u003cp\u003eFounded in Japan in 1923, EXEDY built its reputation as Daikin Clutch before becoming one of the best-known global names in clutch and driveline engineering. Its background spans OEM supply and purpose-built performance hardware, giving the brand unusual depth from factory-style service parts to multi-plate racing systems.\u003c\/p\u003e\u003ch3\u003eWhy This Part Fits the Build\u003c\/h3\u003e\u003cp\u003eEXEDY flywheels are engineered as matched driveline components rather than cosmetic weight reductions. Its lightweight performance flywheels use one-piece billet or forged chromoly steel construction to reduce rotational inertia while retaining high thermal capacity and integrated ring-gear strength.\u003c\/p\u003e\u003cp\u003eA lighter flywheel can improve engine response and rev matching, but it can also reduce stored rotational energy and make low-speed takeoff more sensitive. It is best suited to drivers who value throttle response, faster transient behavior, and performance use over maximum factory-like smoothness.\u003c\/p\u003e\u003ch3\u003eConfiguration\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEXEDY Part Number:\u003c\/strong\u003e FF501A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Lightweight Flywheel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction \/ Character:\u003c\/strong\u003e EXEDY application-specific flywheel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Rating:\u003c\/strong\u003e Not rated independently as a clutch torque-capacity figure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest Suited For:\u003c\/strong\u003e Clutch service or performance builds requiring the listed EXEDY flywheel fitment\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhich Option Makes Sense?\u003c\/h3\u003e\u003cp\u003eFor 2004–2014 Impreza \/ 2006–2009 Legacy \/ 2015–2019 WRX STI (Subaru), this configuration makes the most sense when its intended duty matches the vehicle's actual power and use. Avoid overspecifying clutch aggressiveness: the best setup is the one that maintains the needed torque reserve while preserving usable modulation and protecting the rest of the driveline.\u003c\/p\u003e\u003ch3\u003eTechnical Overview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e One-piece billet or forged chromoly steel on EXEDY lightweight performance flywheels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign Goal:\u003c\/strong\u003e Lower inertia with high thermal capacity and improved engine response\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Gear:\u003c\/strong\u003e Integrated ring-gear design on EXEDY lightweight flywheels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTesting:\u003c\/strong\u003e EXEDY states its lightweight flywheels are engineering-tested to 15,000–18,000 RPM and SFI approved\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Application:\u003c\/strong\u003e 2004–2014 Impreza \/ 2006–2009 Legacy \/ 2015–2019 WRX STI (Subaru)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEXEDY SKU:\u003c\/strong\u003e FF501A\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Because clutch fitment is sensitive to transmission and flywheel changes, verify the complete vehicle configuration before purchase. Modified swaps or previously converted flywheel systems may require a different EXEDY part than a stock vehicle.\u003c\/p\u003e","brand":"EXEDY","offers":[{"title":"Default Title","offer_id":50131460129018,"sku":"EXEFF501A","price":441.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0325\/6352\/7739\/files\/42d31c6bb655488e20c6e44e3d9680b1.jpg?v=1745367643","url":"https:\/\/lgcracing.com\/products\/exedy-lightweight-flywheel-2004-2014-impreza-2006-2009-legacy-2015-2019-wrx-sti-subaru","provider":"Legacy Racing","version":"1.0","type":"link"}