Genuine SRAM Lockring for 11T PG-990 | PG-970 DH Cassette
SRAM Lockring for 11T PG-990 | PG-970 DH Cassette. 1 x Lockring for SRAM PG-990 / PG-970 DH 11T. Matching cassette end ring for SRAM PG-990 | PG-970 DH cassettes, the smallest sprocket has 11 teeth. SRAM PG-970 DH.