SunRace MZ90 Cassette - 12 Speed 11-50t Black MFPN=00.4315.032.647 transfers more of the tightening

transfers more of the tightening torque to the clamping load for a stiffer interface

8-Bit System Replacement Parts

If you plan to ride in very muddy conditions

two extra valve cores

Directional tooth design provides exceptional chain retention

SunRace MZ90 Cassette - 12 Speed 11-50t Black MFPN=00.4315.032.647 transfers more of the tighteningSunRace MZ90 Cassette 12 Speed 11 50t Black. The SunRace MZ 12 Speed Cassette offers a wide ratio design. TECH SPECS Color Black Range 11 50 Cassette Cogs 11 13 15 17 19 21 24 28 32 36 42 50 Cassette Body Type Shimano SRAM 8 9 10 Speed Drivetrain Speeds 12 Weight 586 Defined Color Black