Clutch Pipe Hillman Minx Ser 5 ACP334

The Professional Choice for Brake Line Replacement

If you're replacing corroded brake lines for an MOT pass or a full vehicle restoration, choosing the right material is the difference between doing the job once or doing it again in a few years. While standard copper pipe is traditional and easy to bend, it lacks the structural integrity required for modern high-pressure braking systems and is highly susceptible to work-hardening and vibration cracking.

This Copper Nickel (commonly known as Kunifer, CuNi, or NiCopp) tubing is the industry standard for professional workshop use. By alloying copper with nickel and iron, you get a pipe that retains excellent malleability for easy routing and flaring, but delivers significantly higher tensile strength and fatigue resistance than pure copper. It won't degrade under the constant vibration of a diesel engine or stiff chassis, and it easily withstands the pressures generated by modern ABS units.

Why Kunifer Beats Standard Copper in the Workshop:

• Superior Corrosion Resistance: Unlike steel or pure copper, Copper Nickel forms a tough protective oxide layer that resists road salt, moisture, and road grime—essential for surviving UK winter road conditions.
• High Fatigue Strength: Highly resistant to stress-cracking caused by vehicle vibration, making it the safest choice for long-term use in high-pressure hydraulic systems.
• Workable Malleability: While it is stiffer than soft copper, it is far easier to bend and flare than rigid OEM steel lines. It holds its shape perfectly once bent, preventing sag along the chassis rails.
• Consistent Flares: It takes a clean SAE or DIN flare without splitting or flattening, ensuring a rock-solid, leak-free seal at the calipers, master cylinder, and flexi-hose unions.

Workshop Tips for Best Results:

When working with Kunifer, use a decent quality pipe bender to avoid kinking on tight radiuses. While you can form gentle curves by hand, a dedicated bender keeps the bore round and fluid flow unrestricted. Ensure your flaring tool is rated for copper-nickel—while it's softer than steel, budget flaring kits can struggle to grip the pipe cleanly, leading to lopsided flares. Always deburr the cut end inside and out before flaring to guarantee a perfect seat.

Please note: The physical appearance of the pipe or packaging may differ slightly from the image shown, but the material specification, durability, and quality remain identical.

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.