R type double A-arm

Answer 1

The Can-Am 4 wheelers use this. This is what is on their website:

R-type double A-arm front suspension* - The R-Type forged aluminum double A-arm front suspension delivers razor-sharp handling, remarkable bump absorption, and confident tracking. The radical design with inverted dual-piston caliper - on the inside of the disc - enables placement of the ball-joints and kingpin axis deep inside the wheel for reduced scrub and steering kickback, as well as self-correcting behavior under hard braking. All this in a lightweight package with less unsprung weight than competitive designs for a better ride and improved control.