This is a rare Mantis XCR composite frame, front is aluminium and rear
is cr-mo. The idea was to combine different material to use their
properties in different areas, softer rear for 0.5mm suspension, and
stiffer middle section for superior handling.
This is scanned from an old MBA, it is Richard Cunningham who made the
Mantis bike with his Mantis Valkyrie X frame, notice the N-logo on the
shirt as he designed some bikes for Nishiki (which was sort of parent
company to CyclePro).
