Supertech 81mm Bore Piston Rings - 1 x 2.9 / 1.2 x 3.40 / 2.0 x 2.4mm High Performance Gas Nitrided

Supertech 81mm Bore Piston Rings - 1 x 2.9 / 1.2 x 3.40 / 2.0 x 2.4mm High Performance Gas Nitrided