NEWS CENTER

Replacing a worn brake hose should not mean hunting for an exact OE match or settling for a universal part that does not fit. With a custom assembly, you specify the dimensions and the factory builds to them. The skill is knowing what to specify. This guide covers the three measurements that matter, the performance data to demand, and how to place the order.

Why custom, not universal

A brake hose is a safety part, and it is also a fit part. The same caliper can sit at different distances from the frame across model years, and the banjo fitting must point in the right direction or the hose twists under full lock. Universal hoses force you to compromise on one of those dimensions.

A custom assembly removes the compromise: same inner diameter, same fitting type, same length as the original equipment, built to your measurement rather than the nearest stock size. For motorcycles the case is stronger. A 9.0 mm OD hose instead of 10.5 mm buys nearly 1.5 mm of clearance in chassis routing that has no room to spare, without reducing the 80 MPa burst rating.

The three measurements

A custom hose spec has three parts.

Length. Measured from fitting center to fitting center, not along the hose body. Our assemblies run from 200 mm to 1,500 mm, produced to your measurement, not matched to a stock size.

Fittings. Thread type and orientation. Standard options are M10x1.0, M10x1.25, M12x1.0, and 3/8-24 UNF, in straight or banjo form.

Banjo angle. The rotation of the banjo relative to the hose, which decides whether the hose twists when the wheel turns.

If you cannot measure the old hose, send the OE number instead. A factory with a large OE catalog can usually match it from the part number alone.

Put the performance numbers on the order

Dimensions are only half the spec. The performance data belongs on the order too: volumetric expansion at 6.9 MPa and 10.3 MPa, minimum burst pressure, working temperature range, and the certification the assembly must meet.

On our custom line, expansion runs 0.36 ml/m at 6.9 MPa on the 10.5 mm profile and 0.45 ml/m on the slim 9.0 mm motorcycle profile, with minimum burst at 80 MPa and a working range of -48°C to +120°C. Putting these numbers in writing does two things: the factory builds to a defined target, and you have a reference when the goods arrive. A spec without numbers is a request for interpretation.

Ordering practicalities

Custom does not have to mean small-batch. We accept consolidated orders with mixed specifications: several vehicle applications, different lengths and fittings, one production run. That is how workshops and distributors stock multiple applications without carrying a warehouse of part numbers.

Ask for the test report with the batch. Confirm the lead time before you commit to a date. And keep the spec sheet you sent, because it becomes your incoming inspection checklist.

Before you order, ask your supplier:

1. Is the length measured fitting center to center, and is it built to my measurement or matched to stock?
2. What is the banjo angle tolerance, and will the hose twist at full lock?
3. What are the expansion and burst values for my diameter, not the smallest in your range?
4. Which certification does the finished assembly carry, and can I see the batch test report?
5. Can you consolidate mixed specifications into one order, and what is the lead time?

FAQ

Do I need a drawing to order a custom brake hose?

No. Two inputs are enough: the OE part number, or three measurements (length, fitting thread, banjo angle). If you have neither, send photos and the vehicle model; the factory can identify the application.

Is a custom assembly more expensive than a universal hose?

Per unit, usually yes. But a universal hose that does not fit costs you labor twice: once to install, once to replace. For distributors, consolidated mixed orders keep the per-unit cost close to standard assemblies.

Will a 9.0 mm motorcycle hose handle the same pressure as a 10.5 mm car hose?

Yes. Both are built on a 3.2 mm ID with dual-layer fiber braid and hold a minimum burst of 80 MPa. The slimmer profile comes from a thinner wall, not weaker material.

Need a custom brake hose assembly built to your spec? We crimp in-house, test every batch, and accept consolidated mixed orders. See our custom brake hose assemblies and motorcycle brake hose assemblies, or send your OE number or measurements for a quote.