12mm Gold Standard Head Studs for 996/997 Turbo

8740 Chromoly 12mm Head Studs for Porsche 996TT, 997.1TT and even GT3!

Protomotive 12mm head stud kit.  We have run these to 1569whp/1200wtq.  Ready for 1000whp plus builds.  Fits 996 and 997.1 Turbo with machine work and Protomotive’s head and base gaskets.  These are easier to machine vs. time-sert type, the studs are longer for a deeper bite in the case, and have a larger thread.  The updated Gold Standard head studs are now even longer at the case thread for even more strength, and yellow Zinc coated for ultimate corrosion resistance.  Don’t worry, the case has plenty of depth there.  We’re not going any deeper than the original machinework in the case.   Install Torque to 85-100 ft-lbs following oem sequence.   Settle at 15ftlbs, increase the torque to 30, 45, 60, 75 then final torque.  Recheck at final torque in a linear sequence just to be sure you’ve not missed any!  We loctite them in the case on install and use motor oil on the threads when torqueing.  No need to re-torque later.   Yield is about 30% above actual torque, so there’s plenty of strength left in these.   Feel free to request assistance in machining, clearancing, or if you need tools for the install.  We’re here to help!