There are some visual and technical updates to the 2021 BMW F 850 GS and F 850 GS Adventure. It’s not a huge overhaul of the vertical-twin powered ADV motorcycles, with all changes applying to both versions of the 850—when we say F 850 GS, we mean both 850s, unless noted otherwise. Additionally, there are no options available for the 850s that were previously reserved for the R 1250 GS.

1. ABS Pro and Dynamic Traction Control are now standard on the new 850 GSes. The Euros are clamping down on switching off ABS, so BMW has upgraded the 850s to the more sophisticated ABS Pro. Fortunately, the new regulations still allow switching off ABS on the rear wheel, and that is possible on the F 850 GS in the Enduro Pro riding mode.
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https://ultimatemotorcycling.com/2020/07/17/2021-bmw-f-850-gs-and-gs-adventure-first-look-8-fast-facts/