Shimano Y1YR13010 13T Built-in Spacer Sprocket for CS-M771-10

An individual replacement sprocket identified in the Shimano cassette service drawing.

✨━━━━━━━━━━━━━━✨ Key Features • Model-specific cassette replacement part. • Exact tooth-count and service-code identification. • Replaces the stated component without supplying a full cassette.

📏━━━━━━━━━━━━━━📏 Specifications • Part number: Y1YR13010 • Tooth count: 13T • Cassette: CS-M771-10 • Cassette speed: 10 • Type: built-in spacer

📦━━━━━━━━━━━━━━📦 Package Contents One replacement sprocket. Complete cassette, lockring and tools not included.

🔧━━━━━━━━━━━━━━🔧 Important / Compatibility Listed application: bj/bk groups (11–34T and 11–36T). Match the full part code and cassette configuration. Equal tooth counts do not make different sprocket types interchangeable.