14mm Head Stud Machining service - Hard Core Racing

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14mm Head Stud Machining service

14mm Threads

150 Eur

We provide head stud machining services so you can replace the conventional 11mm Subaru cylinder head bolts with a series of 14mm head studs for strengthening your engine, increasing engine load capacity which in turn helps to prevent the cylinder head from lifting and creating head gasket failures. It will help you to achieve more than 500hp with total reliability and maximize head gasket crush.

The oversized head studs require drilling and tapping the case to accept the larger studs.

Available for any Subaru EJ20, EJ22, EJ25 Engine series, and FA20 engines.


This service will also fit HCR 14mm Subaru head studs.

We can arrange pickup and re-delivery of your engine case after all chosen engineering processes are completed. The engine case will be ready for you to start the assembly process or you can trust it to our professional engine builder.

Please contact us to discuss your exact requirements.


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.

Contact us

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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