Looks so sick on my 15 6.7 powerstroke. The hot side and cold side went on easy. Noticed a quicker throttle response and the turbo boosting quicker. I’ve had the cold side for a year and no boot problems. I recommend these guys.

I ordered an extra set that I will need to be sending back. Thank you.

Great product. Used for studding mains and heads on 6.0 ls.

Great quality no more worrying about bolts being broke off into the head trying to extract them out. ARP style quality indeed!!

Replaced my ball tubes when I replaced standpipes the socket, made the job easy

Replaced my Ball Tubes and the orings while doing standpipe great decision and good quality socket made the job easy

Installed these standpipes on my 2005 F250 with 170k miles truck runs like new

Part review. Received in a timely manner!

Have used the stud kit from here multiple times. Never have any issues, website is easy to navigate. Highly recommend

These head studs and rocker arms work exactly as advertised. The build quality is top-notch, and you can tell these parts are engineered to handle serious pressure. Everything was individually protected and arrived neatly packaged, which really shows the attention to detail. The installation was straightforward, and the milled rocker pedestals fit perfectly. Highly recommended for anyone looking to upgrade their 12V Cummins build.

They are holding 70 psi of boost with no issues. Everything came neatly packaged and every thread was individually protected. The milled rocker pedestals looked nicer than oem and work perfectly. For the price of the kit and what you get I highly recommend it.

The install was easy! The performance is much better than stock!

These are made with great quality and have been performing well within the forst month of installation.

Great fasteners going to install these once the motor is out .. same quality as arp thanks xotic performance!!

Exhaust manifold stud kit was great!!! Installed so easy.

This M12 x 1.75 thread chaser worked perfectly for cleaning up damaged and dirty threads on my 24V Cummins. It threaded smoothly, removed the buildup, and restored the threads without cutting away unnecessary material. The tool feels well-made and saved me from having to replace the part. Definitely worth keeping in the toolbox.

This M12 x 1.75 thread chaser worked perfectly for cleaning up damaged and dirty threads in my 24V cummins. It threaded smoothly, removed the buildup, and restored the threads without cutting away unnecessary material. The tool feels well-made and saved me from having to replace the part. Definitely worth keeping in the toolbox, will probably use on other projects as well.

Just want to say how impressed I am with the bolt … arp quality if not better … this will go great with my 6.2 cam build … and ati balancer… should be a great fit!! Thanks XOTIC PERFORMANCE!!!!

I ordered a set for my service truck because my hired hand swears by these over the competition. I took his advice and man, I am so glad I did. We run a diesel shop and going forward, I won't buy anything other than these. Great construction, thorough instructions and actually include the tools necessary for the job. Keep up the great work guys! I will be ordering again.

Great product!! Everything came as pictured with tools and instructions I will be using this on my 6.2 ls motor that I’m rebuilding so this will be a nice piece to add thanks xotic performance!!

Great bolts came as pictured with instructions and help thanks xotic you rock

Good quality

Middle head studs dont fit for the non vtec ones. They need 2 slightly longer head studs.

These studs are the next best thing compared to the big name!!! Way nicer than all the other more budget friendly studs out there!. We will see how they do with 30lbs of boost!

Great product very straightforward and easy to install