Sunrace CSMZ903 12sp Cassette 11-51t - Black MFPN=00.4118.026.000 Compatible with 12mm and 15mm

Compatible with 12mm and 15mm thru-axles up to 110mm wide

both coil or air options

8 Weight 250 Width Measurement Center Width 42 Defined Color Black

Up your style game with the new Ritchey Classic Locking Grips

If you want to make the challenge of a long extended ride more accessible upgrade your bike with the aero-optimized E 550 rim

Sunrace CSMZ903 12sp Cassette 11-51t - Black MFPN=00.4118.026.000 Compatible with 12mm and 15mmLightweight wide range mountain cassette compatible with HG 8 11sp freehub bodies Fluid Drive Plus shift enhancing design 7075 aluminum largest 3 cogs, all other cogs are steel 7 cogs on 2 aluminum spiders, aluminum lockring and spacers Compatible with Shimano 12 speed drivetrain Model CSMZ903 Freehub Type HG (8 11sp) Speed 12 Range 11 51 Cogs 11 Color Black Weight 517g