Yamaha YZ125 / YZ125X Exhaust Coupler Kit – O‑Rings + Pipe Springs + Muffler Flange Rubber – Expansion Chamber Seal Set

A complete exhaust coupler and sealing kit for Yamaha YZ125 and YZ125X two‑stroke models. This kit replaces worn or leaking expansion chamber seals to restore proper exhaust pressure, reduce spooge, and prevent vibration‑related leaks. Perfect for routine maintenance, pipe swaps, or freshening up a tired exhaust system.
Includes new pipe O‑rings, a pipe‑to‑silencer rubber coupler, and exhaust pipe springs — everything needed to reseal the entire front‑to‑rear exhaust connection.