Engine Rebuild Repair Overhaul Gasket Seal Kit For MINI Cooper S JCW R55 R56 R57 R58 R59 N14B16A N14B16C 1.6 Turbo. is unique because all of the pistons are forged in house. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require.
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