What Is the Shimano SM-BH90-JKS High Pressure Brake Hose Kit For?

The Shimano SM-BH90-JKS is the high-pressure hydraulic brake hose kit for XTR and Dura-Ace disc brake systems that use the BH90 hose specification -- a higher-pressure rated hose than the BH59 used in mid-tier Shimano systems. The kit format includes the hose and the required J-Kit fittings (olive and insert) pre-assembled, so a complete hose replacement requires no additional hardware sourcing. The BH90 spec delivers more precise hydraulic feel and is specified for flagship-level Shimano brake systems where the tighter feel and higher pressure resistance of the BH90 hose is part of the system design.

Compatible with Shimano XTR and Dura-Ace hydraulic disc brake systems using BH90 hose specification. Mineral oil system. Includes hose and J-Kit fitting hardware. Not compatible with BH59 systems. Hose installation requires proper bleed procedure and appropriate tools.