Unknown Choppers- Frantom-E and Frantom-R enclosed motorcycle concepts.

Unknown Choppers, Inc. is proud to introduce their “Frantom-E“ and “Frantom-R“ enclosed motorcycle and enclosed motorcycle trike concept designs. The Frantom-E is the two wheel version and the Frantom-R is the trike version. Unknown Choppers’ vision for an aggressive looking and sounding enclosed motorcycle will provide a driving experience like no other! Frantom-E and Frantom-R Concept Technology