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    Nothing is fixing my 1×12 shifting


    Please help friends.

    I have had issues with shifting on my Canyon Spectral CF7 29 2023 since riding hard at a bike park for a few days.

    I can index cogs 1 through 3 but then I get bad over shifting and theres more tension than normal in the largest cog.

    Ive messed with low limit extensively and have indexed prior bikes fairly well. Ive run through the spectrum of the bscrew even though my original derailleur mostly didnt have it activated at all.

    I found out i had a stripped rear swing bolt on my shock (yikes). I just replaced that. All frame bolts are greased, loctited, and tightened to spec. I noticed my shock can move slightly horizontally left and right on its mount and its not snug with spacers but i think its always been like that. Im nervous i didnt notice how badly the bolt was stripped but i dont see any indication of damage.
    I got 2 new derailleurs, a new derailleur hanger, and ive been making sure the hanger is straight with a tool.

    Ive replaced my shifter cable and housing. Ive cleaning my crankset and its rock steady.

    Ive disassembled and cleaned my cassette and ensured its stacked correctly with an exploded diagram. The diagram shows a spacer between my cassette and the bike but i dont have that… but my bike was fine for like 8 months since i last removed the cassette so it must have never had one.

    My chain, cassette, and chainring have all worn together since new.
    Im truly stumped here and would appreciate any insight and can provide pics or videos.

    Shimano m7100 cassette
    Shimano xt derailleur

    Nothing is fixing my 1×12 shifting
    byu/EmergencyArm4610 inbikewrench



    by EmergencyArm4610

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    2. Ok-Consequence2859 on

      1st thing I noticed is cables routed backwards in the anchor. Should come out warp around top and exit on bottom of anchor. This will dramatically affect derailleur pull is routed wrong.

      2nd make sure clutch is not to tight. I have had new derailleurs with the clutch holding 7+ nm tension I air on the lower side of spec but that’s too high.

      3 for cables don’t use shimano or any coated cables use only high polished ss cables such as jag wire hyper slicks. I have found that both being slicker and 1.1 instead of 1.2 make 12 speed shifting far better, more so on bikes with tight bends in the routing.

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