Home mechanics and workshops cutting or refitting Shimano SM-BH90 brake hoses.
The Shimano SM-BH90 connecting insert is the small barbed pin that pushes into the cut end of a BH90 hydraulic hose. It stops the hose from collapsing when the olive and connecting bolt are tightened, so the joint seals and the brake keeps a firm feel.
You'll need one whenever a hose is shortened, replaced or re-terminated, for example after fitting a new bar or stem, swapping levers, or on internally routed bikes where the hose has to come off. We sell them individually from Shimano's workshop jar, so you only buy what the job needs.
BH90 hose is used on most current Shimano hydraulic brakes, including Deore, SLX, XT and XTR mountain brakes and road and gravel models such as 105, Ultegra, Dura-Ace and GRX. Check the code printed on your hose before ordering.
Genuine Shimano
The correct insert for SM-BH90 hose.
Sold individually
Buy exactly as many as the job needs.
Wide compatibility
Used across Shimano road, gravel and MTB brakes.
Part
Example compatible brakes
Great for
Maybe not for
For Shimano SM-BH90 hose only. The hose code is printed along the hose. This listing is one insert. You'll usually want a new olive too, as olives are compression parts and shouldn't be reused.
Cut square, then insert
Use a proper hose cutter so the end is clean and square. Tap the insert in until it sits flush with the hose end. A crooked cut or half-seated insert is the most common reason a freshly shortened hose weeps.
Bleed afterwards
Shortening a hose lets a little air in. Once everything's tightened, do at least a lever-end bleed with Shimano mineral oil so the lever feels firm again.
