Use this flywheel counterweight when you're looking to enhance the performance of your 2004 - 2011 Mazda RX - 8. It's perfect for car enthusiasts and mechanics who want to keep their engines running smoothly. The counterweight is precisely machined to tight tolerances, ensuring it fits well in your car's engine system. While specific size and weight details aren't provided, you can be assured of its high - quality build that helps reduce bearing load and extends engine life.