The biggest difference with the new XTR M9100 series hub compared to its predecessor is Shimano’s new Micro Spline freehub which was designed to accompany Shimano’s new 12-speed cassette. Shimano had to recreate their freehub body in order to allow their new cassette to feature gears smaller than 12 teeth. Their new cassette features a 10 to 51 tooth range. The new hub also transitions from the traditional use of pawls in a freewheel to a design which uses a pulley freewheel. This allows the hub to engage every 7.6 degrees which immensely reduces the amount of play before your cassette engages. Inside the hub are tried and true cone bearings with hardened and polished steel bearing shells and stainless steel balls provide an incredibly reliable and durable system, boasting exceptional service life and ultra smooth performance.
CALIFORNIA PROPOSITION 65 WARNING: This product can expose you to chemicals including (Cadmium, Phthalates, Bisphenol, Nickel (Metallic), di(2-ethylhexyl)phthalate "DEHP"), which is known to the State of California to cause cancer and/or cause birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.
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Get free 1-day California shipping with your $60 purchase today, on most orders. Please note this offer is only available to physical shipping addresses in California(no PO Boxes), and oversize charges still apply on some heavy/large itemsDue to manufacturer restrictions, this product cannot be shipped to the following locations: