As of January 1, 2025, brake pads sold in the United States cannot contain more than 0.5% copper by weight. That’s not a California-only rule anymore. It’s nationwide.
If you’re stocking or installing brake pads, you need to understand what changed, why it matters to your business, and how to make sure the pads on your shelves are compliant.
What the Law Actually Says
The Better Brake Rule originated in Washington State and California, then expanded through legislation adopted by all 50 states via the EPA’s Copper-Free Brake Initiative. The phase-in happened in two stages:
Stage 1 (January 1, 2021): Brake pads could contain no more than 5% copper by weight. This was the “Level A” compliance standard. Most manufacturers had already transitioned by this point.
Stage 2 (January 1, 2025): Brake pads cannot contain more than 0.5% copper by weight. This is the “Level N” compliance standard and represents the final phase. At 0.5%, copper is essentially eliminated as a functional ingredient in the friction compound.
The reason behind the regulation: copper particles from brake dust wash into waterways and are toxic to aquatic organisms, particularly salmon and steelhead in the Pacific Northwest.
The LeafMark System: What Those Symbols Mean
You’ve probably noticed a small leaf symbol on brake pad packaging. That’s the LeafMark, a compliance marking system developed by the Brake Manufacturers Council.
LeafMark “A”: Compliant with Level A (5% copper cap). This was the 2021 standard.
LeafMark “B”: Compliant with Level B (no more than trace amounts of specific heavy metals including lead, mercury, cadmium, asbestos, and chromium-VI).
LeafMark “N”: Compliant with Level N (0.5% copper cap). This is the current and final standard. Any pad manufactured after January 1, 2025 should carry the “N” designation.
What to look for on the box: The LeafMark should appear on packaging and may also be stamped on the backing plate. An “N” mark means the pad meets the current 0.5% copper standard.
What This Means for Your Inventory
If you have pre-2025 brake pads on your shelf that contain more than 0.5% copper, you’re not required to pull them from inventory and destroy them. The regulation applies to manufacturing and first sale, not to retail inventory that was legally produced before the deadline.
What distributors should do:
- Confirm that all new orders from your pad suppliers are Level N compliant
- Identify remaining pre-2025 copper-containing stock and move it through normal sales
- Update your catalog and ordering systems to reflect current part numbers
What shops should do:
- Verify that the pads your supplier is shipping carry the LeafMark “N” designation
- If you’re buying pads from multiple sources, check compliance on everything. Counterfeit and grey-market pads may not meet the current standard.
How the Reformulation Affects Performance
This is the question that matters most to techs and shop owners: do copper-free pads perform as well as the previous generation?
The honest answer: it depends on the manufacturer.
Copper was a valuable ingredient in ceramic friction formulationss. It provided thermal conductivity, structural reinforcement, and friction stability across a wide temperature range. Removing copper without adequately replacing those functions degrades performance.
What happened with budget manufacturers: Some lower-tier brands essentially pulled copper from their existing formula without fully re-engineering the compound. The result is pads that don’t handle heat as well, may exhibit more noise, or have a different pedal feel than their predecessors.
What happened with quality manufacturers: Brands that invested in R&D developed new friction chemistries that replace copper’s functions with alternative materials. These manufacturers’ current copper-free pads match or exceed the performance of their previous formulations.
DFC’s entire pad lineup has been copper-free compliant since before the January 2025 deadline. The transition involved reformulating each vehicle-specific friction compound individually, not just swapping out copper across the board.
How to Evaluate Your Pad Supplier’s Copper-Free Transition
Ask for their reformulation timeline. A manufacturer that started reformulating in 2020 or 2021 had time to engineer properly. One that rushed to comply in 2024 may have cut corners.
Compare comeback rates before and after. If your comebacks on a particular pad line increased noticeably in the past 12 to 18 months, the reformulation might be the cause.
Request updated friction data. The friction coefficient curves for the copper-free version should be close to the previous version.
Check for FMSI certification continuity. A brand that maintained FMSI certification through the reformulation demonstrated that their new formula meets the same performance standards.
Counterfeit and Non-Compliant Pads
The copper-free regulation has created a secondary problem: counterfeit and non-compliant brake pads entering the market through online channels and grey-market distributors.
Pads manufactured outside the US that haven’t been reformulated may still contain copper above 0.5%. They’re cheaper because the manufacturer didn’t invest in reformulation.
How to protect yourself:
- Buy from authorized distributors and established supply chains
- Verify the LeafMark on every shipment from new or unfamiliar suppliers
- Be skeptical of dramatically lower prices on pads that should be in the same cost range as other compliant products
DFC manufactures in-house at its LA facility. Every pad ships with Level N compliance, traceable manufacturing data, and the quality controls that come with domestic production.
Looking Ahead: Euro 7 Brake Dust Regulations
The US copper-free law is the first major environmental regulation on brake friction materials, but it won’t be the last. The European Union’s Euro 7 standard (expected to take effect in late 2026 or 2027) will regulate total brake dust particulate emissions, not just copper content.
Euro 7 sets limits on the mass of brake particles that can be emitted per kilometer driven. This is a fundamentally different approach from the US regulation because it restricts the output regardless of what’s in the pad.
For shops and distributors, the takeaway is simple: the regulatory environment around brake friction materials is getting more restrictive, not less. Suppliers that demonstrate compliance leadership today are the ones most likely to keep you compliant tomorrow.
Find copper-free, Level N compliant brake pads across DFC’s full product lineup at dynamicfriction.com.
The copper-free transition is done. The law is in effect. The question now is whether the pads on your shelf perform as well without copper as they did with it. That answer depends entirely on how much your manufacturer invested in getting the reformulation right.
Related: Which brake pads are made in the USA | How to choose the right pad line for your shop

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