quick view Add to Cart ACT ACT 1987 Mazda RX-7 XACT Flywheel Prolite - 600140 MSRP: $805.99 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... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare