J.E. Pistons 379449 FSR Ultra Series Piston Kit - Standard Bore 92.00mm, 11.5:1 Compression control-levers-perches-perches out of the box

out of the box

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J.E. Pistons 379449 FSR Ultra Series Piston Kit - Standard Bore 92.00mm, 11.5:1 Compression control-levers-perches-perches out of the boxBore: 92. 00mm Compression: 11. 5: 1 Compression Sizing: Standard Bore 999cc. In house forging has allowed JE to develop proprietary Aligned Grain Flow Technology forging technology that directs the grain flow of the aluminum to flow around critical areas of the piston, increasing strength. Lateral gas ports channel combustion gases to the back of the top ring groove, which adds pressure behind the compression ring to keep it pushed against the