Hard to tell it was 2002 BMW R 1150 RT.
This is one serious custom. The bike it’s based on is hardly even hinted at. This BMw M001 motorcycle is awesome.
The 2002 BMW R 1150 RT looks unrecognizable, and it’s amazing.
The builder, Watkins Motorworks headed by Jack Watkins makes amazing bikes. This creation is like none other. Check out the website link above to learn more about the designer.
The Bike Shed’s article is a great way to learn more. Head over there for the details.