It has been a long tradition of this board that the bike-specific forums are based on the engine type, rather than the particular model. Each forum serves bikes with one particular engine type, which is a very logical split. (This is true even though the 650s are split across two forums - both forums only have a single engine type).
Unfortunately the new 450 Guerilla forum breaks this rule, because the 450 Himalayan is still in the same forum as the old 411 models. So the 450s (the 'K'-series?) are now split between two forums.
I would like to suggest that all the 450s be put into the same forum, and let the 411 forum just serve the 411 bikes. This change would make them consistent with all the other forums.