BMW N54 and N55 closed decking service - Hard Core Racing

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BMW N54 and N55 closed decking service

10mm thick insert, filled gaps

895 Eur

Closed decking is process where the top plane of engine case (head of plane of case ) are machined so it can accept CNC machined inserts. After this process cylinder walls are completely supported in weakest place – at the top, where combustion happens. All the coolant bores that exist in head gasket are machined in cylinder supporting inserts, so engine cooling is not affected. Extra cooling passage can be machined so the engine coolant flows freely under head gasket. For those N54 and N55 that have air gaps between cylinders, we fill those gaps with aluminum sheets similarly to closeddecking.


Before needed services we agree on all the prices and services need to be done. The invoice is sent after all the work is completed and before the engines are being shipped. Once a payment is recieved, we ship the cases.


Currently, we are offering shipping cases all over Europe and we use courier delivery services from door to door.

To determine the shipping cost of a product, add the product to your shopping cart, and input your shipping address. We will contact you about the final shipping cost and estimated delivery timeframe.

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Company “HCR” has signed an agreement with Investment and Development Agency of Latvia (LIAA) on Incubation support within the framework of the ERDF Project No. “Regional Business. Incubators and Creative Industries Incubator”.
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