Ford RS Sierra Escort Cosworth YB 2WD/4x4 90.8mm STD NPR Piston Rings -1 Piston
Ford RS Sierra Escort Cosworth YB 2WD/4x4 91.3mm 0.5mm NPR Piston Ring -1 Piston
Ford RS Sierra Escort Cosworth YB 2WD/4x4 91.8mm 1.0mm NPR Piston Ring -1 Piston