HCR 11mm Head Stud Set

HCR 11mm Head Stud will provide higher engine performance and reliability compared to the original cylinder head bolts, highly recommended for engines reaching up to around 550hp. We have improved the design of the threads and tested it, to make sure that we can provide the best solution for clamping the cylinder heads onto the block assembly to reduce the risk of having a head lift under a higher boost.
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Set includes:

– 12 HCR 11mm head studs

– 12 nuts

– 12 washers

– 1 ARP Ultra-Torque assembly lube and fitting install instruction

If you plan to go for more power we recommend replacing the conventional 11mm threads with a series of 14mm precisely manufactured, for more than 600 hp+. Please contact us to discuss your exact requirements.