Original Shimano replacement lockring for XTR M9000 cassettes that use an 11t first position cog. This lockring can also be used with other Shimano cassettes that use an 11t first position cog. This lockring will not work with cassettes that use a 12t or larger cog. To avoid damage to your cassette and hub, this lockring must be tightened to 40nm using a lockring tool such as the Park FR-5 .
Original Shimano XTR replacement part
For 11t cassettes only
Fits all Shimano 11t cassettes
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