Piston Ring Kit .020" (4Mm Oil Ring) .020" Oversize Piston Ring Kit (4Mm Oil Ring)$55.10 Enter Quantity SKU: W-1138-4084 Replaces: SBA115104084Fits: 1520, 1530, 1620, 1630, 1715, 1725, 1920, TC25, TC25D, TC29, TC29D