Shimano Disc Brake Adapter PM→IS Fork 180mm – fits 180/203mm rotors

Upgrade your e‑bike’s braking system with Shimano’s high‑quality disc brake adapter.

Designed to convert a PM (post‑mount) brake caliper to an IS (inside‑seatpost) fork, it supports both 180 mm and 203 mm rotors.

• Fits Shimano RT86, RT81, RT56 brake calipers.
• Lightweight aluminum construction.
• Simple bolt‑on installation – no extra tools required.
• Improves braking stability on mountain and commuter e‑bikes.