{"product":{"id":7640423760053,"title":"ACT 1979 Ford Mustang XACT Flywheel Prolite","body_html":"Dramatically improved engine response and acceleration, mild to moderate gear rattle; Heat-treated forging for strength and toughness, induction-hardened ring gears for maximum life; One piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc. No more warped inserts or loose ring gears; Recommended for race use; Forged, CNC machined and dynamically computer balanced for smooth high RPM reliability\u003cbr\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/9aea4a88ee91500c37a766fcb5c28a21.PDF\"\u003e\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/d32vzsop7y1h3k.cloudfront.net\/d856e10aab4787d29e6c192d62ac3288.PDF\"\u003eInstallation Instructions\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThis Part Fits:\u003cp\u003e\u003c\/p\u003e\u003ctable border=\"1\"\u003e\n\u003ctr\u003e\n\u003cth align=\"left\" width=\"100\"\u003eYear\u003c\/th\u003e\n\u003cth align=\"left\" width=\"125\"\u003eMake\u003c\/th\u003e\n\u003cth align=\"left\" width=\"150\"\u003eModel\u003c\/th\u003e\n\u003cth align=\"left\" width=\"80\"\u003eSubmodel\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1968-1973,1979\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eBase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1979\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eGhia\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970-1973\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eGrande\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1970-1973\u003c\/td\u003e\n\u003ctd\u003eFord\u003c\/td\u003e\n\u003ctd\u003eMustang\u003c\/td\u003e\n\u003ctd\u003eMach 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","vendor":"ACT","product_type":"Flywheels","created_at":"2024-02-01T09:44:41-05:00","handle":"act-1979-ford-mustang-xact-flywheel-prolite","updated_at":"2026-02-24T20:11:04-05:00","published_at":"2024-02-01T09:44:32-05:00","template_suffix":null,"published_scope":"web","tags":"1968-ford-mustang-esi3970400, 1969-ford-mustang-esi5281026, 1970-ford-mustang-esi3179641, 1971-ford-mustang-esi3134636, 1972-ford-mustang-esi2365734, 1973-ford-mustang-esi5198620, 1979-ford-mustang-esi1021557, 250-500, act, CaseLotQuantity:1, chassis 1979, ClearanceItem:N, Core:N, CorePrice:0, Drivetrain\u003eFlywheels, EPA:N\/A, fits_1968-1973`Ford`Mustang`Base~1979`Ford`Mustang`Base~1979`Ford`Mustang`Ghia~1970-1973`Ford`Mustang`Grande~1970-1973`Ford`Mustang`Mach 1, flywheels, ford, LTL:N, MPN:600411, mustang, Non-CARB:N, Prop65:Y, SpecialOrder:Y, tire-and-wheel, TURN14_ID:90343, wheels","variants":[{"id":43579511701685,"product_id":7640423760053,"title":"Default Title","price":"416.55","sku":"ACT600411","position":1,"compare_at_price":"496.00","fulfillment_service":"manual","inventory_management":"shopify","option1":"Default Title","option2":null,"option3":null,"created_at":"2024-02-01T09:44:41-05:00","updated_at":"2026-02-24T20:11:04-05:00","taxable":true,"barcode":"842385002275","grams":7756,"image_id":null,"weight":17.1,"weight_unit":"lb","requires_shipping":true,"price_currency":"USD","compare_at_price_currency":"USD"}],"options":[{"id":9750984917173,"product_id":7640423760053,"name":"Title","position":1,"values":["Default 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