22253-86 Keith Black Cast Hypereutectic Pistons

These Keith Black hypereutectic pistons are a serious performance upgrade for Sportster models, designed by one of the most respected names in drag racing. Replacing OEM 22253-86, these pistons are cast from a specialized aluminum alloy that allows for incredibly tight running tolerances—as little as 0.0005 inches—resulting in a quieter engine with more power. The lightweight design reduces wear and improves fuel efficiency while keeping the piston skirts cool to minimize expansion. Sold as a set, this complete kit contains two pistons with Hastings chrome moly rings, piston pins, and circlips. They are engineered to handle high ring temperatures and reduce detonation, making them an excellent choice for riders looking to maximize the reliability and output of their 1200 Sportster engine.