Trying out [bikepacking.com](http://bikepacking.com) mullet drivetrain setup, this one: [https://bikepacking.com/gear/guide-to-mullet-drivetrains/#VII](https://bikepacking.com/gear/guide-to-mullet-drivetrains/#VII) . From the pictures only, the setup seems to be working fine. 

Interestingly, Wolf Tooth stated that GRX 812 derailleur is not compatible with Goatlink 11:

[https://www.wolftoothcomponents.com/products/goatlink-11?\_pos=2&\_psq=goat+link&\_ss=e&\_v=1.0#:\~:text=Shimano%20rear%20derailleurs.-,Not,-compatible%20with%20Shimano](https://www.wolftoothcomponents.com/products/goatlink-11?_pos=2&_psq=goat+link&_ss=e&_v=1.0#:~:text=Shimano%20rear%20derailleurs.-,Not,-compatible%20with%20Shimano)

Anyway, I trust the article and decided to go with it. I use the exact same parts for the setup: Shimano GRX RD-RX812 11S derailleur, Goatlink 11 derailleur hanger, Sunrace CSMX80 11-50t cassette sprocket. For the chainring, Wolf Tooth 46 (the said article did not specifically mention the size of the chainring, though). 

Problems, as captured in the video:

* Cannot shift to the largest sprocket
* I find it quite difficult to shift down the lowest 5 gears

Feedbacks are appreciated

Attempting Mullet Drivetrain