Meet your ultimate defense against head lift. iE HoldStrong Head Studs are engineered and manufactured for structural integrity to go toe-to-toe with the demands of high-output engines. They’re made to keep your engine together and sealed tight using a rolled-thread process, chromium-based H11 tool steel and aircraft grade J-threads for maximum strength.
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Description
iE HoldStrong Head Studs - Audi / B9 / S4 / S5 / RS5 / SQ5KEEP IT TOGETHER Meet your ultimate defense against head lift. iE HoldStrong Head Studs are engineered and manufactured for structural integrity to go toe to toe with the demands of high output engines. Theyre made to keep your engine together and sealed tight using a rolled thread process, chromium based H11 tool steel and aircraft grade J threads for maximum strength. CHROMIUM H11 TOOL STEEL Its not rocket science, but its close. Our chromium based
KEEP IT TOGETHER
CHROMIUM H11 TOOL-STEEL
It’s not rocket science, but it’s close. Our chromium-based H11 tool steel alloy is known for its use in aerospace industry applications like helicopter blades and landing gear. H11 is widely used for its crack-resistant properties to prevent thermal fatigue or thermal shock. This alloy’s low-carbon content gives it strength with minimal distortion when tooling. If it’s good enough to land a plane, it’s the right choice for your high-performance engine.
Unlike stock stretch bolts, HoldStrong head studs do not stretch to torque and are reusable.
IT'S ALL IN THE THREADS
iE head studs are manufactured using a rolled method in a pure oil solution. The alloy material is shaped rather than removed (cut) which creates a compressive force that strengthens the thread and eliminates imperfections that could cause stress cracks. Rolled threads are built for strength and extreme fatigue resistance.
iE ROLLED THREADS
- Precise surface finish
Roll forming the threads in a contained die produces an incredibly smooth thread surface that greatly reduces the chances of stress cracks. - Compressed material
Instead of removing material, the alloy is compressed to form the threads which greatly increases strength and fatigue resistance. To maintain the structural integrity of the material during this process, heat caused by friction is reduced using a cooling oil. - Accurate thread profile
The precise thread forming also produces a very consistent thread profile and dimensional accuracy, which delivers greater thread engagement and improves the overall performance of the fastener.
TRADITIONAL CUT THREADS
- Surface imperfections
The thread surface of a machined (cut) fastener is at risk to surface chatter and burrs. These small imperfections can cause stress concentrations and thread failure. - Removed material
Forming the threads by cutting material away removes and weakens the alloy. Less material means lower strength and fatigue resistance. - Unstable thread profile
While faster and cheaper to produce, cut threads can not maintain a truly consistent thread profile, making them less than ideal for critical clamping loads required for performance builds.
NOT ALL THREADS ARE EQUAL
The sharp edges and corners of standard cut thread can cause stress points that lead to bolt failure. To prevent this, iE head studs have been engineered with J-threads. This higher quality thread profile has a curved minor-diameter structure to reduce stress points and prevent breakage from vibration. J-threads also provide a more accurate sizing for an exact dimensional fit.
WHAT IS HEAD LIFT?
The Audi B9 3.0T EA839 engine is an absolute powerhouse capable of over 739 HP and 710ft-lbs with simple hybrid turbo bolt-on upgrades. These massive gains also result in higher cylinder pressures that put a lot of stress on the factory head bolts. When the factory bolts hit their limit, they stretch and cause head lift. This breaks the cylinder head gasket seal which results in compression loss, oil/coolant contamination, loss of power, and in extreme conditions; catastrophic engine failure.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 3
Nice looking but…..
Color: Brown, Size: 14.9"L x 0.6"W
Like the 3 different sizes but they have a strong odor that I didn’t like.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 1
Not a happy customer
Color: Brown, Size: 14.9"L x 0.6"W
If you are looking for nice size cutting boards, then these are not for you! They are very small and I didnt like the etching on the cutting boards, they will get filled with things you are cutting. What I least didn't liked don't know if its Amazon fault or the vendor? But the item came in the original box the boards were in, the the top part of the box was open. Everything was in the box but the label was on the box. When I returned it to the UPS store they wanted to charge me$10.19 for a box even though it was shipped without a box finally convinced them to put in a large
envelope and they still charge me $2.75. Not happy at all with this vendor or maybe Amazon?
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Great set
Color: Brown, Size: 14.9"L x 0.6"W
I love this set. I can’t wait to have a party and try it out as a stand. The small cutting board is a little small but it is good for cutting a piece of fruit or small veggies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 4
Good option when replacing plastic cutting boards
If you're looking to replace plastic cutting boards, this is a nice option. The backs of the cutting boards are shaped to double as serving trays, a nice feature. These have been under heavy use, and are wearing well. I only gave 4 stars because the slots in the rack these stand in was too tight a fit, which I corrected with a little sanding in the slots.
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Reviewed in the United States on January 22, 2026
★★★★★ 5
It's a great book for learning about Greek without all of the ...
Format: Kindle
More comprehensive than I originally thought it would be. It's a great book for learning about Greek without all of the memorization (although there is some) by an author who really knows his subject. I'd recommend it to anyone who wants to get deeper into Bible study but doesn't have the time for full college courses.
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Reviewed in the United States on May 31, 2015
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