Super Fluid Drive 9-speed MTB cassette from SunRace.
- Hi-Tensile Steel sprockets on steel w/ engineering polymer spacers and locking.
- Standard HG/splined MTB freehub body fit.
- 11-40T cassette compatible only with Shimano RD-M3000/RD-4000 and Sram X5/X7 2015 onwards long-cage rear derailleurs.
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