TUBPRO 3/16" OD x 25FT Copper-Nickel Brake Line Kit with 16 Nuts & 4 Unions, Corrosion-Resistant

TUBPRO's 3/16" OD x 25FT copper-nickel brake line kit is a corrosion-resistant, flexible replacement set that includes 16 nuts and 4 unions for professional-quality brake system repairs and upgrades.

Whether you're restoring a classic car, fixing a commuter's brake leak, or installing new lines on an off-road rig, choosing the right tubing matters. This kit pairs a full 25-foot length of 3/16" outside-diameter copper-nickel tubing with a comprehensive assortment of inverted tube nuts and union connectors so you can route and join lines without hunting down multiple parts. The copper-nickel alloy balances malleability and strength, letting you form bends by hand while resisting the corrosive effects of road salt and moisture that shorten the life of ordinary steel lines.

How does this tubing perform compared with steel or coated lines?

The copper-nickel alloy resists rust and oxidation far better than plain steel or copper-coated iron, extending service life in climates with road salt or frequent moisture. Its alloy composition keeps structural integrity under hydraulic pressure while remaining lighter than steel alternatives.

• High corrosion resistance for coastal and winter conditions
• Maintains strength under braking pressures
• Lower weight than steel brake tubing

Is the kit ready for a complete repair or upgrade?

Yes—this package supplies 25 feet of 3/16" tubing plus a selection of nuts and unions that cover common inverted-flare fittings and line-to-line connections. The collection lets you route new runs and join segments without pausing to order extra fittings.

• 16 inverted tube nuts in common thread sizes for adapters and banjo fittings
• 4 unions to connect two 3/16" brake lines together securely
• Enough tubing for multiple runs or full-system replacements

Will I need special tools to shape and install the tube?

The tubing is intentionally soft and malleable so you can form smooth bends by hand for many installations, but using a tubing bender and flaring tools yields cleaner results. TUBPRO tubing is compatible with standard flaring and bending tools, and installs with the supplied inverted nuts and unions.

• Form bends by hand for simple routing
• Use standard tubing benders and flaring tools for professional finishes
• Compatible with TUBPRO flaring accessories

How can I confirm authenticity and material if I’m concerned about magnets?

Magnets are not a reliable test because nickel-containing alloys may react unpredictably; visual checks and magnet tests can be misleading. For definitive verification, have the tubing tested by a qualified materials lab or professional testing agency.

• Magnets may attract nickel alloys—this is not proof of ferrous metal
• Professional material testing provides conclusive alloy identification
• Dealer or workshop inspection can confirm fitting compatibility

Who is this for: Mechanics, DIY restorers, and performance-minded vehicle owners who need a durable, flexible replacement brake line solution will benefit from this kit. It’s suited for automotive, motorcycle, ATV, and light-truck brake systems where corrosion resistance and ease of shaping are priorities. If you want to reduce future maintenance from rusted lines while keeping installation straightforward with a ready set of common nuts and unions, this TUBPRO copper-nickel kit is designed for your needs.