Originally Posted by GrahamD
I have a very "anal" friend who seems to remember everything BMW and he said something like this....
The beak is but a fashion item (unless you are actually running off road without the standard guard) that was used in the Dakar as a mud guard that was out of the way of the knobbie tyres and rocks that can foul a standard Design rule compliant guard, but it does help get more air into the oil cooler at slow speeds (and bugs and seeds and leaves) that will try and prevent the motor melting on hot days.
It is also just a rip off of the Dr Big front end. It's the shape that does all the "sensible" stuff.
Older ones just had a high plastic guard like a standard Suzuki dirt bike.
Maybe like this one? ... I bought a high fender of a Yamaha dirt bike (Part # 5RM-F1511-20) and will make a support to brace both front shock columns to bolt the fender ... not necessary to remove the 'duck beak' ... lol