Shimano Dura-Ace CS-R9200 12-Speed Cassette DEMO

This cassette was previously installed on a new bicycle.  It is in NEW condition, never used, but may show signs of being installed previously. Sold AS-IS, with full factory warranty.  

Hyperglide+ started on mountain bikes, where mid-climb shifts under load determine whether you clear a technical section or stall out. Shimano's Dura-Ace CS-R9200 12-Speed Cassette brings that same technology to the road, using tooth profiles and shift ramps engineered for seamless gear changes in both directions—upshifts and downshifts—even when you're putting down serious power. The practical result is that you no longer need to soft-pedal through shifts on steep climbs or during sprint accelerations, so you keep momentum instead of losing it to the brief hesitation traditional cassettes demand.

The R9200 cassette is offered in three ranges: 11-28T for flatter terrain and criterium-style racing, 11-30T as the do-everything option, and 11-34T when the routes turn vertical. Shimano kept the 11-tooth small cog across all three rather than dropping to a 10T, which matters for drivetrain efficiency and wear. Smaller cogs increase chain articulation angles and accelerate wear on both the chain and cassette, so the 11T stays put and Shimano added range at the other end. The cog progression stays tight through the racing gears—single-tooth steps from 11 through 15 or 16—before opening up into the climbing cogs, so cadence changes stay manageable when you're working at threshold.... Read More