M12 x 1.25 L40 Style Extended Lug Nuts 20pc Set w/ Locks - Aluminum
K2 Industries
M12 x 1.25 L40 Style Extended Lug Nuts 20pc Set w/ Locks - Aluminum
Check fitment before ordering
Match the year, make, model, trim and engine in the product details. Review mounting requirements and vehicle modifications. Ask us about this part.
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Product information from K2 Industries
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M12 x 1.25 L40 Style Extended Lug Nuts 20pc Set w/ Locks — Aluminum
Twenty aluminum lug nuts in M12 x 1.25 thread with matching lock nuts for secure wheel retention. Extended L40 style design accommodates deeper wheel offsets and custom fitments. Lightweight aluminum construction paired with hardened steel locks prevents loosening under road vibration.
Key Features
- Extended L40 profile - Clears larger wheel offsets and custom brake packages without fouling.
- Aluminum + steel lock combo - Lighter than all-steel, with anti-vibration locking to hold tight.
- Complete 20-piece set - Lug nuts and locks together; no separate purchase needed.
Specs
- Material: Aluminum (lug nuts), Steel (locks)
- Thread size: M12 x 1.25
- Style: L40 Extended
- Quantity: 20 pieces (lug nuts and locks)
What's Included
- 20 aluminum lug nuts (M12 x 1.25 L40)
- 20 hardened steel lock nuts
Frequently Asked Questions
Will these work with my deep-dish wheels?
L40 extended length is designed for deeper offsets and wider wheels. Measure your current lug nut stack height or test-fit one before committing the full set to confirm clearance with your brake hardware.
Do the lock nuts come pre-installed on the lug nuts?
They ship as separate pieces — 20 lug nuts and 20 lock nuts. You'll thread them onto your wheel studs in order (lug nut first, then lock nut on top).
Can I reuse these if I swap wheels later?
Yes. Aluminum and steel don't seize easily, so you can remove and reinstall them multiple times. Hand-snug them first, then torque to your vehicle's spec — do not over-tighten aluminum.
Your vehicle
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Choose or change vehicle →Product reference & ordering help
Supplier & part identification
K2 Industries
| Option | SKU / part reference |
|---|---|
| Standard | K2-5921-UNV-006-TSARK |
Vehicle compatibility
Read the application years, model, trim, engine and exclusions in the description above. A make-level collection or product recommendation alone does not confirm fitment.
Request fitment help →Installation & specifications
Review the manufacturer’s specifications and installation notes above. Confirm required mounting hardware, tools and modifications before ordering. If instructions are not supplied, contact us with the part reference.
Shipping expectations
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Shipping & delivery informationManufacturer warranty
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Warranty information