Prestacycle UniBlock PRO Cassettes are machined from a single solid block of cold-forged Chrome Molybdenum alloy steel, then heat-treated, tumble-finished and electroplated for added durability, low-friction operation and longer service life. The UniBlock PRO cassettes feature ARC™ shifting tooth profile technology that provides the fastest, smoothest possible shifting to all systems while minimizing the impact to power delivery.
- Prestacycle UniBlock PRO's unique HG12 interface is compatible with all HG12, HG11 and HG10 Freehubs
- Wider inner and outer freehub teeth maintain engagement at all points in all gears to provide an overall increase in freehub contact
- Includes red anodized locknut for HG 12 and HG 11 freehub bodies
- HG 10 requires Prestacycle's HG 10 lockring (sold separately)
Product Specifications
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