DIY Modification: XT cage installed on a GRX 812 11-speed derailleur lets you shift through an 11-51T cassette. No tan pans, no goat links, no 3rd party components!

Update (yes, with properly sized chain)
   • The Rear Derailleur EXPLAINER  

Parts used:
M8000 XT SGS cage, Inner (Y5RT10000): https://amzn.to/3SdC2S0
M8000 XT SGS cage, Outer (Y5RT98090): https://amzn.to/48OUh7u
GRX 812 RD: https://amzn.to/42cUX44

Same result, different approach:
   • It Works!! // The $127 Shimano GRX Mu...  

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