What Is the Shimano BH90-SB Brake Hose Olive and Connecting Insert For?

The Shimano BH90-SB olive and connecting insert is the fitting hardware required to cut and re-terminate a BH90 high-pressure hydraulic brake hose. When a BH90 hose is trimmed to length during brake installation or hose replacement, the olive (compression fitting) and connecting insert must be seated at the cut end before threading the barb fitting into the caliper or lever. Using genuine Shimano OEM hardware ensures a leak-free, correctly torqued hydraulic connection -- the tolerances of BH90 fittings are specific, and third-party hardware can compromise the seal. A small but critical consumable for any BH90 brake hose service job.

Compatible with Shimano BH90 brake hose and hydraulic disc brake systems including XTR M9000/M9100 and Dura-Ace road disc that specify BH90 hose. Not compatible with BH59 hose systems, which use different fitting dimensions.