Brakes
Shimano GRX BR-RX400 Rear Caliper
Rear · Caliper
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
Where to Buy
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Technical data
Specifications
- Supported brake control interfaces
- Hydraulic Mineral Oil
- Compatible brake hoses
- Shimano SM-BH90-JK-SSR, Shimano SM-BH90-J-SSR
- Supported positions
- Rear
- Brake mount
- Flat Mount
Catalog trust
Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Oct 6, 2026
- Compatibility review
- Reviewed Oct 6, 2026
Approved technical sources
- Exact physical stock component review
- bike.shimano.com/nl-BE/products/components/pdp.P-BR-RX400-R.htmlManufacturerSource checked Oct 5, 2026Evidence reviewed Oct 6, 2026