Wiseco Piston Kit - 4.075" - 117" M8 40251Ps

• ArmorFit proprietary coating technology conforms to bore and reduces operating friction and noise • AmorX coating is applied to piston crown, ring grooves, and pin bore through the proprietary electrochemical-process and materials • Greatly increased resistance to wear and damage caused by heat and detonation, plus resists ring micro welding - Harley-Davidson CVO Street Glide FLHXSE (2017, 2020, 2021, 2019, 2018); Harley-Davidson Softail Heritage Classic FLHC (2020, 2019, 2021, 2018); Harley-Davidson Softail Street Bob FXBB (2018, 2020, 2021, 2019); Harley-Davidson CVO Tri Glide FLHTCUTGSE (2021, 2020); Harley-Davidson Softail Breakout FXBR (2018, 2019); Harley-Davidson CVO Road Glide Custom FLTRXSE (2018, 2019, 2020, 2021); Harley-Davidson Softail Low Rider S FXLRS (2020, 2021)