the measurements say It sticks out about 4" from the grip cut out to the headlight, and it's about 9" back from there.
And they're made of ABS plastic, so easy to trim, and you can mold it with a heat gun.
I just ordered one for the hell of it. Maybe I'll put it on my pacer-racer.
(I guess images from eBay don't work here...) (edited)