I have the 11 speed XTR HG+ cassette on my SJEvo. The product was announced (allegedly at the request of sponsored Pros), a few samples were produced, then due to the factory fire they removed it as an option. A few of these cassettes float around out there. First Look: Shimano's New XTR is More Than Just 12-Speed - Pinkbike +it's actually 10-45 I see. It's basically the 12 speed, with the 1st gear removed. It's lighter but mainly I just don't waste time going in to a 1st gear I don't want. Because I wax my chains, frankly I...