The 45T upgrade increases the stock Shimano 11 speed 11-40 cassette range by 12.5%. The 45T provides more total cassette range, it’s not just an easier granny gear. Adding the OneUp 45T sprocket lets you increase your 1×11 front chainring from a 30 to 34T without losing any low range.Eliminate dropped chains forever with our true Narrow Wide chainringdesign.
One Up 45T Conversion
Get the biggest cassette range ever! 11x45T from One-Up for the new 11speed Shimano XT M8000. Then you can brag how you have the biggest disk (or just make steeper hills in the saddle)
Ed the Moose
Out of stock