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Main Stud Kit For 2008-2010 6.4L Ford Power Stroke

SKU MP875
Original price $482.68 - Original price $482.68
Original price
$482.68
$482.68 - $482.68
Current price $482.68
Availability:
in stock, ready to be shipped

These are main studs, not head studs. Main and head studs serve different purposes—selecting the right one is crucial.

Why Main Studs? 

Main studs provide superior clamping force compared to main bolts, reducing wear on block threads and assisting with main cap alignment. Unlike bolts, which twist during tightening, studs remain stationary, reducing the chance of main cap walking under high loads. They are especially beneficial in high-performance applications where increased stability and durability are required.

Install Guide
Package Contents

20x Main Stud

20x Nuts

1x Allen Wrench

1x Fastener Assembly Lubricant

1x Socket

⚠️ Prop 65 WARNING

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Customer Reviews

Based on 8 reviews
88%
(7)
13%
(1)
0%
(0)
0%
(0)
0%
(0)
Z
Zann
Made Well

Perfect fit. The studs are well made, and the threads are really solid. The material is strong and the performance has been great.

J
Jason Cox
Durable!

Wow, impressive! We are super happy with this! I almost wish I had gotten it sooner! It's strong and sturdy, well-made, and a great value!

D
Damian
Great but pricey

I'm familiar with this brand. It is truly a fantastic product that is extremely high quality and made to a standard most others don't ever attain but at this price it just does not make sense. There are options that cost way less and you will find it hard to convince a DIY mechanic to spend this kind of money on bolts. People try to save money by doing the work themselves. If you have the money to burn then go for it but it's a tough sell otherwise. Great product though.

A
Amazon Customer
Industrial strength Main Studs - Xotic Performance™ 6.4L Ford Main Stud Replacement Kit

I found Xotic Performance™ High Performance Fasteners when I was looking for Main Studs for a Ford 7.3L Rebuild earlier this year, I also saw that Xotic Performance™, supplies several complete bolt sets for the 6.4L, 7.2L, & 7.3 L Ford diesels. I am very impressed with the Top Shelf Quality of the Xotic Performance™ Bolt Sets. I am currently working on a 6.4L Ford, I was happy to see that Xotic Performance™ Carried the Affordable 6.4L Ford Main Stud Replacement Kit for this engine. In my opinion replacing the Main & Head Bolts is the best way to Build a Reliable, High Compression Ford Diesel Engine. Money well spent. I gave the Xotic Performance™ 6.4L Ford Main Stud Replacement Kit a Full Five Star Rating Across the Board. Heavy Duty, Rock Solid, High Performance Engine Fasteners by all means.

T
The Avid Aviator
Tough build

This product is made with great quality and longevity in mind. I've reviewed products from this brand multiple times before, and they've been consistently excellent. The construction is tough, and robust. There aren't any faults, no manufacturing errors, and are packaged well with no missing parts. Zero complaints anywhere.

  • 30-day-hassle-free returns-truck

    Free domestic Shipping

    On all orders. Overnight shipping option available at checkout.

  • Lifetime-Warranty-shield

    lifetime warranty

    If any of our products fail due to a manufacturing defect, we will replace them free of charge.

  • Perfect-fit-guaranteed

    perfect fit, guaranteed

    If the product doesn’t match your engine, we will replace it with no extra charge.

INDESTRUCTIBLE TENSILE STRENGH

XOTIC 7200 material properties allow for far greater tensile strength compared to 8740 Chromoly steel head studs. Threads are rolled after heat treatment for optimum fatigue strength.

1 Test Method: ISO 6892-1:2016 or ASTM A370 ASTM E8/ E8M in the US. M14*237

1 Test Method: ISO 6892-1:2016 or ASTM A370 ASTM E8/ E8M in the US. M14*237

OPTIMUM DESIGN

Broached stud ends make cylinder head install & removal easier. Engineered to unleash more performance out of your vehicle. Ample clamping strength prevents cylinder heads from lifting.

ULTRA CLAMPING FORCE

Unleash the full potential of your diesel engine with head studs designed to for ultra-high clamping force that greatly exceeds the standard, factory-made bolts. These studs are engineered to retain the cylinder seal even under the extreme pressure of today's high-performance turbo systems.

Based on 1211 reviews
89%
(1081)
8%
(99)
2%
(28)
0%
(2)
0%
(1)
Stand pipes/dummy plugs

Shipped in one day only payed 8 dollars for shipping. 300 miles later still working and a fixed high pressure oil leak.

Cold side pipe

Installed pipe and throttle response is much better!

Look OEM+

Assembly looks like quality parts. They are very well made and have a smooth, professional look. I am installing these on a spare engine I will be putting together in the next few months.

Very satisfied

This was a great kit came with everything you needed to do the job I ran into a small issue because mine was a late 97 12v my main bolts were 12mm instead of 14mm I got ahold of them and they got me the right ones sent over asap great customer service

Good for higher rev reliability

These actually perform quite good. I'm surprised how easily they torque down but no issues as of yet

Worth every penny

Nice upgraded direct replacement rocker arm set. I believe these still have needle roller bearings but as you can see in the pictures they are better protected. I installed them in an LS chevy tahoe with a stage 2 cam and LS7 lifters. They worked flawlessly. I was blown away by the quality for the price, I wasn't expecting them to be this nice.

Good quality set

This seems to be a very well made set. Measuring them with a caliper they are exactly the same ratio as the stock units and seem pretty beefy. The trunions are smooth and look exactly like the more expensive "kits" on the market and honestly probably all come from the same place. I will be running these on a high lift cam at fairly high rpms so I will see how they hold up. I think this is a very good budget upgrade over stock.

Hard to Beat

If im remembering correctly iv gotten headstuds from this brand before and those were really nice. This kit was just the same high quality rockers and unlike another kit i had where i had to put it all together these were drop in ready. Its not alot of frustration to put the kits together but to know that someone else whos done 1000s of these vs myself thats done a set. quality checked them. it does make me alittle less nervous besides if it breaks wasnt my fault haha. Really easy install everything was there and they work great.

M12 x 1.75" Cleaning & Restoration Thread Chaser Tool

High quality kit that installs with confidence

This kit is very well put together and feels solid right out of the box. The rocker arms and trunnions are cleanly machined and the pre-assembly makes installation simple. Everything fit without issues and the upgrade adds peace of mind over stock parts. For the price it is a durable and reliable option that should hold up well in performance builds, making it a good value for anyone working with an LS platform.

High quality and very competitive price vs doing the trunion bushing upgrade alone. Comes with new hardware too so win win!

Very well package looks really good. Shipping was fast really like them.

I am Really Impressed with the Quality & Construction of the Xotic Performance LS Rockers

‎ Wow! I have been using Xotic Performance Parts for Several Years now with no issues whatsoever, I ordered the LS2 Rockers with the Pre-Installed Trunnions & Installed them in our 5.7L Engine. I am really impressed with the Quality & Construction of the Xotic Performance LS Rockers, Xotic Performance has updated their Trunnions to use C-Clip Retainers that no doubt will increase the service life of the Rocker Assemblies. I gave the Xotic Performance LS Rockers a Full Five Star Rating Across the Board

5.3 rocker arms.

You need upgraded trunions if you want to run a cam with more lift than stock engines. It's a lot easier to install these rockers than convert old ones. These seem to be great quality hardware and work well. They are a fair value for a set of upgraded trunion rocker arms. I approve and would recommend. Same basically asMichigan.

Upgraded seals is a good thing !

The parts have not been installed yet but everything looks up to speed as far as upgrades are concerned.

Great rockers for an LQ4 engine

I am rebuilding an LQ4, and had not planned on new rockers, but ran across this set and thought why not. I was only going to do a valve job and replace the springs and pushrods, but this is a very good quality upgrade. These are very well made and you can tell these are quality parts. These are very easy to install, since I already have the head off and was doing the valves and springs. This is a solid design that will function well on my LQ4. I think this is a very good value for the price and I am glad I found it before I finished the job.

Excellent

This is an excellent set of rocker arms kit. Includes all bolts in a package. High quality and solid parts at a good price. No issues at all. Very nice indeed.

Part was as described and looks to be high quailty

I installed the intercooler pipe as soon as it came in, fit was perfect and it was easy to install.

Precision Upgrade—Smooth Valvetrain Performance

Swapping to the Xotic Performance LS1 rocker arms on my 5.3L engine was one of the best bolt-on upgrades I’ve done. The pre-installed trunion kit and quality hardware meant the install took less than an hour per head, and the arms slid right onto the studs without any clearance issues. Once torqued to spec, the valvetrain feels noticeably firmer—no more lifter tick at idle and valve lash stays rock-solid even at high RPM. I’ve put several hundred miles and a few spirited pulls on the dyno, and oil flow remains steady with zero noise or deflection. If you’re running a stock or mildly built LS2/LS6/LQ4/LQ9/LM7/etc., these rockers deliver reliable, precision performance without breaking the bank.

Don’t know yet , in process of building engine, I’ll know more tomorrow , gave 3 stars because haven’t put torque to yet , the price is great

Strong studs at a great price

These are slightly different than ARP studs but just as strong and saves you money. Installed these on my 09 6.7 Dodge Diesel with no issues 👍🏽

Saved my motor

After trying to install competitors inferior product. I turned to exotic to save my motor from a total rebuild. Awesome product.

Xotic Performance LS1 Rocker Arms with pre-installed trunion kit

These fit perfectly, come with all necessary bolts, and save time with the trunnions already installed. Built strong for performance and reliability and a great value for anyone doing an LS build or upgrade.

The design is much better than original

This is a much better design and has worked flawlessly so far. I’ve put 4 sets of stand pipes on my truck since 2014 and each only lasted 6 months to a year I’m 3 years in on these with no problems. I buy them regularly as a 6.0 mechanic