Racer X test rider David Pingree takes us through the all new 2019 KTM 450 SX-F Factory Edition at Fox Raceway.

ABOUT PRO CIRCUIT

Based in Corona, California, Pro Circuit Products, Inc. is a leader in off-road motorcycle and ATV exhausts and aftermarket performance parts. Started in 1978, Pro Circuit is the go-to shop for recreational riders and professionals for everything from suspension work to complete engine packages, and everything in between.