Shimano Mount Adapter for Disc Brake Caliper SM-MA90-F203P/PM Ultimate series for Post mount 180mm to 203mm

The Shimano SM-MA90-F203S/P is a lightweight, XTR-grade adapter designed to mount a 203mm rotor. This high-performance component allows you to interface a post-mount caliper with an International Standard (IS) mount fork.

For improved setup precision, the adapter includes conical washers to ensure perfect caliper alignment. Its weight-optimized design provides maximum braking power for mountain bike applications without unnecessary bulk.

Quick Facts

Feature	Specification
Rotor Size	203mm
Mount Interface	IS Mount (Fork) to Post Mount (Caliper)
Position	Front
Caliper Compatibility	Works with all post-mount calipers