this BMW S14 piston set features:

2022-Present     G22     B4

this BMW S52 piston set features:

BMW M Series Racing Camshafts professionally built BMW S58 engines making 800hp-1400hp

For enhanced strength and reliability

Piston Skirt Coating Number of Pistons:12 this BMW S14 piston setSkirt Coating Friction Reducing Piston Enhancement This coating is applied to the piston skirt (the side of the piston that contacts the cylinder wall) to reduce friction during operation. By lowering metal to metal contact, the coating promotes smoother piston movement, improves ring seal stability, and minimizes wear on both the piston and cylinder bore. Key Benefits: Reduces friction between the piston and cylinder wall Minimizes wear during cold