SKU: 91280553372

Main Stud Kit 2006-2010 GM 6.6L Duramax LBZ/LMM XDP Xtreme Diesel Performance

Sale price$105.72 Regular price$117.47
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Description

Main Stud Kit 2006-2010 GM 6.6L Duramax LBZ/LMM XDP Xtreme Diesel PerformanceUpgrade the factory main bolts in your 2006 2010 GM 6. 6L Duramax LBZ LMM with the XDP Main Stud Kit XD3008MS. Whether you are setting up your Duramax for the track or street, upgrading the stock OEM main bolts is a must. The factory bolts typically can't handle the pressure found in high horsepower applications. Constructed using an 8740 Chrome Moly with an added proprietary element ensures these studs will not stretch like the factory bolts. The

Upgrade the factory main bolts in your 2006-2010 GM 6.6L Duramax LBZ/LMM with the XDP Main Stud Kit XD3008MS. Whether you are setting up your Duramax for the track or street, upgrading the stock OEM main bolts is a must.

The factory bolts typically can't handle the pressure found in high-horsepower applications. Constructed using an 8740 Chrome Moly with an added proprietary element ensures these studs will not stretch like the factory bolts.

The threads are rolled after heat-treating to deliver maximum fatigue strength. These studs are rated at 220,000-236,000 psi tensile strength and 210,000-230,000 yield strength to ensure a strong hold under higher combustion pressures.

In addition to the upgraded strength, replacing the main bolts with studs also allows you to obtain a more accurate torque reading. A conventional bolt gets twisted as it is tightened, so it's reacting to two different forces at the same time.

With a stud the force gets applied to the vertical axis, resulting in a more even clamping force. In addition, they typically allow for easier engine assembly and proper alignment of the main bearing caps every time.

These are a must have for high-performance applications and are reusable, unlike the OEM Torque-To-Yield (TTY) bolts which must be replaced after each use. This kit includes main studs, 12-point nuts, washers, and installation instructions. Assembly lubricant sold separately.
Features:

  • Includes 12-Point Nuts and Washers
  • Yield Strength: 210,000-230,000 PSI
  • Tensile Strength: 220,000-236,000 PSI
  • Threads Rolled After Heat Treatment
  • Reusable Unlike Torque-To-Yield (TTY) OEM Bolts
  • 10mm Studs Test Out At Max Load Of Over 120KN
  • Manufactured In ISO/TS 16949 Quality Control Facility
  • 8740 Chrome Moly Construction With Added Proprietary Element

Tech Tips:
XDP Thread Cleaning Chasers (Sold Separately):
Both the XD40126TC and XD40125TC are a great add-on that will be critical during installation. Thread Cleaning Chasers are an excellent tool to have on-hand to ensure you have properly cleaned the threads in your engine block before the installation of any fasteners. Clean threads provide accurate torque readings and will help give you peace of mind during your engine build.

XDP X-TRA Slick Engine and Fastener Assembly Lubricant (Sold Separately):
The use of XD541 is highly recommended during engine assembly. Apply XDP X-TRA Slick Lubricant to head studs, head bolts, main studs, main bolts, connecting rod bolts, and any other fasteners used during engine assembly. Using a proper assembly lubricant during fastener installation reduces friction and torque pre-load scatter in the torquing sequence, while also helping to prevent thread galling and seizing.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 91280553372

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Deborah
Waukegan, US
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Nice fabric.
Color: Red Gingham, Size: Large
This was a well made shirt and the fabric was nice. However, I had to return the shirt because it was too small. I read the reviews which said it ran large. So, I ordered down a size, should not have done that. I believe it is true to size, but I’d not a fitter or modern cut.
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Tyler S
Lowell, US
★★★★★ 4
Lightweight, travel ready shirt
Color: Blue Plaid, Size: Medium
Relaxed fit, quality fabric. Color was as expected. Material is pretty standard as well
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Reviewed in the United States on April 23, 2026
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denise bugg
Alexandria, US
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Nice quality
Color: Black Gingham, Size: X-Large
This shirt is constructed well.
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Reviewed in the United States on May 31, 2026
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Jose Nunez
Waukegan, US
★★★★★ 3
Buen Producto
Color: Green Gingham, Size: X-Large
Los colores no son los mismos de la foto
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Reviewed in the United States on May 30, 2026
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Gay Newson
Los Angeles, US
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Shirt
Color: Yellow Gingham, Size: X-Large
True fit very nice
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Reviewed in the United States on June 4, 2026

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