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Custom Hose Building — Made to Your Specification

BRT Motorsport builds custom hydraulic and fluid lines to order — braided brake and clutch hoses, high-pressure power steering hoses, fuel lines, oil cooler lines and turbo oil feeds. We crimp and swage fittings in our own workshop in the UK. Send us the lengths, the fitting type at each end and the threads on your components, and we will make the line up and post it. Most orders are made up the same or the next working day.

If you would rather build it yourself, we sell the hose and reusable fittings as parts — see Or build it yourself below.

What we can make

  • Braided brake and clutch hoses — AN3 (-3) PTFE hose with a stainless steel braid, built to your length with your choice of banjo, female or male fittings at each end. AN3 is the correct size for brake and clutch lines.
  • High-pressure power steering hoses — either 3/8" OEM-style hose with crimped fittings, or AN6 PTFE braided with swaged ends.
  • Fuel feed and return lines — AN6 is the usual choice for engine swaps and track builds; step up to AN8, AN10 or AN12 where you need more flow.
  • Turbo oil feed lines — made up with the correct restricted banjo bolt for your turbocharger.
  • Oil cooler and breather lines — AN8, AN10 and AN12 in braided or push-on hose.
  • Power steering pipe repair — compression fittings to join new hose into an otherwise sound OE steel power steering line, so you replace the failed section rather than the whole pipe. For 3/8", 10mm and 5/16" rigid tube.

What we need from you

Four things, and the job is specified:

  1. Length — end to end, including the fittings. If you are unsure, send the old hose or a photo with a tape measure alongside it and we will work it out.
  2. Fitting type and angle at each end — straight, 45° or 90°, and whether you need a banjo, a female swivel or a male thread.
  3. Thread size and pitch on the rack, pump, caliper, master cylinder or turbo the line connects to. M10 x 1.0 will not fit an M10 x 1.25 port, so this matters more than any other measurement.
  4. Reusable or swaged ends — see below.

Not sure what you have? Send the old hose, or photographs of both ends, and we will identify the threads for you. We would rather spend five minutes on that than have you order the wrong line.

Reusable or swaged ends?

Two different things, and the choice depends on whether the routing might change.

  • Swaged ends are pressed on permanently. The assembly is sealed and cannot be taken apart — the right choice for a finished installation you will not be altering.
  • Reusable ends can be undone and refitted, so a line can be shortened, re-routed or re-made without buying new fittings. Choose these for a build still in development.

Hose specifications

Braided brake and clutch hose

PTFE inner with a 303/304 stainless steel braid. 12,618 PSI burst pressure, rated from −70°C to 250°C, with a 19mm minimum bend radius. PTFE does not swell under pressure the way rubber does, so pedal feel stays firm.

Power steering hose — two systems

  • 3/8" OEM-style with crimped fittings — 1,650 PSI operating, 7,800 PSI burst. Use this when you are repairing or replacing a factory line and want it to fit and look original.
  • AN6 PTFE stainless braided — 2,750 PSI maximum operating pressure, lighter, available with reusable or swaged ends. Use this for engine swaps and track cars.

As a rule of thumb: matching an OE line, use 3/8"; building something new, use AN6.

AN sizing

AN sizes describe the bore and the thread, not the outside diameter of the hose:

  • AN3 (-3) — brake and clutch lines
  • AN4 (-4) — small fuel feeds, oil feeds, gauge lines
  • AN6 (-6, dash 6, 6AN) — 3/8" bore, 9/16" x 18 UNF male thread. The standard choice for fuel feed and return on most engine swaps and track builds
  • AN8, AN10, AN12 — where you need more flow than AN6 gives: fuel returns on high-power builds, oil cooler lines, breathers and dry sump plumbing

Or build it yourself

If you would rather assemble the line yourself, we will send the hose and reusable fittings as parts. Everything is sold individually, so you can order exactly what the job needs:

Typical jobs we are asked for

  • A full braided brake hose set for a track or rally car
  • Replacing a leaking OE high-pressure power steering hose that is no longer available
  • Repairing a corroded section of an otherwise sound steel power steering pipe
  • Fuel feed and return lines for an engine swap
  • A turbo oil feed with the correct restriction for the turbocharger fitted
  • Shortening or re-routing an existing braided line after a change of layout

How to order

Email [email protected] or use our contact page with the lengths, fittings and threads. We will confirm the specification and the price before anything is made. Most orders are made up the same or the next working day.