When you are replacing corroded brake lines for an MOT pass, you need a material that balances workability with long-term reliability. Standard copper is often the DIY go-to because it is soft and easy to flare, but it lacks the fatigue strength required for high-pressure braking systems over the long haul. Steel is tough but a nightmare to route and flare on the vehicle. Copper Nickel (commonly known as Kunifer, CuNi, or NiCopp) is the industry-standard solution that professional mechanics rely on.
Kunifer offers significantly higher tensile strength and fatigue resistance than standard copper. This means it easily handles the high-pressure pulses of modern ABS systems without work-hardening, swelling, or cracking under stress. Crucially for vehicles facing harsh winter road salt and constant moisture, the nickel content provides superior corrosion resistance, ensuring your brake line repair outlasts the vehicle itself.
Why Use Kunifer in the Workshop?
High Fatigue Strength: Resists vibration and pressure-cycling fatigue far better than pure copper, preventing premature failure.
Superior Corrosion Resistance: The copper-nickel alloy prevents the rapid oxidation and pitting caused by road salt, road grime, and moisture.
Excellent Workability: While slightly stiffer than pure copper, it still bends cleanly by hand or with a pipe bender without kinking, and it takes a perfect, leak-free single or double flare using standard workshop flaring tools.
Professional Standard: Delivers a neat, secure, and permanent brake line replacement that looks the part and performs to OE standards.
Whether you are plumbing a complete classic car restoration from scratch or splicing in a rear section to replace a corroded line, this Kunifer pipe ensures the job is done once, and done right.
Please note: The physical appearance or coil packaging of the pipe may vary slightly from the image shown, but the material specification remains strictly premium copper-nickel.
Material: Copper Nickel
(Pipe may differ to image shown)
Copper pipes are more traditional and easier to work with however Copper Nickel (aka CuNI, Kunifer, cupro-nickel or NiCopp) is more resistant to corrosion and has a higher fatigue strength.
We can manufacture pipes to your exact specifications.
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