Prestacycle UniBlock Cassettes are a single-piece unit exquisitely machined from a solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability and low-friction operation. The 2 largest cogs on the 11-40 and 11-42 HG11 cassettes are crafted with one-piece of high quality 7075 aluminum.
- 2 largest cogs are crafted with one-piece of premium 7075 aluminum
- Red aluminum locknut included (For HG11 freehub only)
- Use on HG10 freehub requires Prestacycle HG10 lockring (Sold Separately)












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