JE Pistons Ultra Series GM Gen III/IV LS 4.07in Bore/3.622in Stroke Set of 8 Pistons - 360769 Outback 2.5i Limited 1977 GMC K25 Suburban Sierra

JE Pistons Ultra Series GM Gen III/IV LS 4.07in Bore/3.622in Stroke Set of 8 Pistons - 360769 Outback 2.5i Limited 1977 GMC K25 Suburban SierraJE Pistons Ultra Series pistons combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. They are ready for massive power and boost right out of the box! JE Ultra, Chevrolet, LS Gen III IV, 4. 070 in. Bore, 1. 304 CD, Flat Top, 8 Cyl. Piston Kit Chevrolet LS Gen III IV

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