When it comes to making reliable power, the buck stops at the piston head. But when selecting the best piston for your particular engine, you’ve got a lot to consider—especially regarding the alloy that the piston is made of. Focusing on the two most popular high performance alloys, 2618 and 4032, the experts over at RaceTec will help you determine which one is best suited to your specific motor. (If you’re an engine builder, it’s definitely worth taking notes here.)