The exterior shots of the Team Nami building are actually the Kawasaki Motorcycle Headquarters formerly located in Irvine, California. They did not however, have a private test track next to the property.
The "450 Nami" bikes, ridden by K.C and Rowdy, are in fact just dressed up Honda 450's.
Steve Howey (K.C. Carlyle) & Cameron Richardson (Piper Cole) also worked together on two episodes of Shameless (2011)] as Kevin & Cheryl respectively.
Alana Austin & Aaron Carer both star together in Popstar.
Alana Austin also starred in the DCOM Motorcrossed.