uxcell 5/16 in OD Brake Line Tubing Kit 25 ft Copper-Coated Coil with 16 Inverted-Flare Fittings

uxcell's 25 ft 5/16" OD copper-coated flexible brake line kit is a ready-to-install roll of brake tubing with 16 inverted-flare fittings for hydraulic brake, fuel or transmission lines.

This kit supplies a long, flexible 5/16" outer-diameter tubing coil and a full set of inverted-flare fittings so you can replace, extend or custom-run metal lines without sourcing separate connectors. The tubing is copper-coated for enhanced corrosion resistance and is sized to work with common flare adapters and brake line tools. It’s supplied as a 25-foot roll to minimize joints and gives installers room to route lines around chassis components.

What exactly comes in the uxcell brake line kit?

The kit contains one 25-foot coil of 5/16" OD brake tubing plus sixteen inverted-flare fittings. Fitting specifications and thread measurements are included so you can confirm compatibility before installation.

• 1 x 25 ft brake line, 5/16" outer diameter
• 16 x inverted-flare fittings (thread inner diameter 8.2 mm / 0.32")
• Thread sizes: one set M14 × 1.5 and another set M13 × 1.25
• Coated tubing for added corrosion resistance and ease of handling

Will this tubing fit my vehicle’s brake or fuel connections?

Compatibility depends on your vehicle’s existing flare type and thread sizes; this roll is designed for systems using 5/16" OD lines and inverted-flare fittings. Check the thread sizes on your current lines or ports—M14 × 1.5 and M13 × 1.25 are supplied, and the fittings’ inner diameter is approximately 8.2 mm (0.32").

• Works with inverted-flare type connections commonly used in automotive brake/fuel lines
• Thread size options included to match many European and Asian fittings
• Measure existing ports or compare flare tools before purchase
• Can be adapted with standard flare adapters if slight differences exist

How easy is it to bend, flare and install the tubing?

The tubing is intentionally flexible and copper-coated to allow clean bending and reliable flaring with standard tools. Installers can shape runs around suspension or frame members while producing solid inverted flares for secure connections.

• Flexible coil roll reduces kinking during routing
• Compatible with standard brake-line bending, cutting and flaring tools
• Copper coating helps the tube hold flares and resists cracking when bent
• Supplied length reduces the need for multiple joints

How durable and corrosion-resistant is the copper-coated tubing?

The copper coating improves resistance to environmental corrosion compared with bare steel and helps protect the line in underbody or engine-bay placements. The product has undergone bending and flaring tests to verify performance under normal workshop procedures.

• Copper coating offers a protective barrier against moisture and road salts
• Manufactured to withstand routine bending and flaring without splitting
• Suitable for brake, fuel and transmission applications where corrosion is a concern
• Long 25 ft coil reduces exposed joints that can be corrosion points

Who is this for: This uxcell kit is aimed at DIY mechanics, professional technicians and fabricators who need a predictable, full-length spool of 5/16" brake line plus a comprehensive set of inverted-flare fittings. It’s useful for brake system repairs, fuel and transmission line runs, custom chassis work, and any situation where fewer joints and strong flares are preferred. Verify thread sizes and flare type on your vehicle before fitting to ensure a proper match.