2012+ Subaru WRX Piston Rings by Supertech Supertech Piston rings are manufactured in Japan with the lasted technology for high performance applications Features 99.5mm Bore 4.1.2x3.4mm / 1.2x4mm / 2.0x2.7mm Gas Nitrided Benefits Heat Conduction Excellent
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Supertech Piston rings are manufactured in Japan with the lasted technology for high performance applications
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