The Shimano SM-MA-F203S/S adapter allows the installation of Shimano IS2000-Standard caliper on forks with IS2000-Standard direct style in conjunction with 203 mm rotors.
Product features - Shimano SM-MA-F203S/S

Fork type: IS2000-Standard
Caliper type: IS2000-Standard
Rotor diameter: 203mm

Material

Adapter: Aluminium
Screws: Steel