The Shimano SM-BH90-JK-SSR disc brake hose is a high-performance hydraulic line designed for Shimano -compatible disc braking systems. Designed for road bikes , gravel bikes and certain builds fitted with Shimano hydraulic brakes, it offers excellent rigidity under pressure and helps ensure precise, powerful and consistent braking.

With straight fittings at both ends, the SM-BH90-JK-SSR is particularly well-suited to set-ups Shimano using this configuration. It is specifically listed for several Dura-Ace, Ultegra, 105, Tiagra and GRX groupsets and systems.

A high-pressure Shimano hydraulic hose

The SM-BH90-JK-SSR is one of the Shimano hydraulic hoses designed for hydraulic disc braking systems requiring a rigid and pressure-resistant hose.

Good hose rigidity minimises deformation when the cyclist applies strong pressure to the lever. This helps to maintain a direct and precise braking feel.

This feature is particularly beneficial during hard braking, long descents or when riding the bike in a sporty manner.

Straight fittings for a clean fit

A key feature of the SM-BH90-JK-SSR is its Straight-to-Straight configuration, meaning it has a straight connector at each end.

This configuration is used on various systems Shimano -road and Gravel.

The hose can be shortened to achieve a length suited to the bike and the routing between the lever and the caliper. The available kits include the necessary components for connection, depending on the version and packaging.

Compatibility Shimano -road and gravel

Shimano Part number SM-BH90-JK-SSR is compatible with several road and gravel hydraulic disc brake systems.

In particular, it can be used with components such as:

• Shimano Dura-Ace R9170;
• Shimano Ultegra R8070 / ST-R8020 / ST-R8025;
• Shimano 105 R7070 / ST-R7020 / ST-R7025;
• Shimano Tiagra BR-4770 / ST-4720 / ST-4725;
• Shimano GRX RX810 / RX600 / RX400 and compatible shifters.

Please note: compatibility depends on the exact part number of the lever and caliper. A hose Shimano should not be chosen solely on the basis of the groupset.

Mineral oil Shimano

The SM-BH90-JK-SSR is designed for hydraulic circuits Shimano using mineral oil Shimano. The relevant Shimano systems must not be filled with DOT fluid.

The use of the correct fluid is essential for the correct operation and reliability of the braking system.

Key features of the Shimano SM-BH90-JK-SSR

• Shimano hydraulic brake hose.
• Part number: SM-BH90-JK-SSR.
• High-pressure technology.
• Straight fittings at each end.
• Good rigidity under pressure.
• Can be shortened to suit the required length.
• Designed for compatible hydraulic disc brakes Shimano.
• Suitable for use on a wide range of road and gravel set-ups.
• Compatible with Shimano mineral brake fluid.
• Available in lengths of 1000 mm and 1700 mm, depending on the product code.
• Connecting fittings available depending on the packaging.

1,000 mm or 1,700 mm: which one should you choose?

The SM-BH90-JK-SSR is available in 1000 mm and 1700 mm lengths.

The 1000 mm version may be suitable for certain short installations or for use in a circuit requiring only a short length.

The 1700 mm version offers more leeway and is particularly suitable for set-ups requiring a longer hose. It can then be shortened to achieve the required length.

When choosing, ensure you allow sufficient length to permit the handlebars to turn fully and the bike to move naturally, without placing excessive tension on the hose.

Expert tip: before ordering, note down the part number on your current hose or identify the exact part numbers of the lever and caliper. Also check the required length and ensure there are straight connectors at both ends.

After replacement, the hydraulic system must be properly sealed and bled to remove any air. Shimano also specifies that the correct fitting insert for the SM-BH90 must be used: using an unsuitable insert may result in an inadequately secure fit and compromise the brake’s operation.

Technical specifications