COLUMBUS Zona 38.1mm Bent 29er Downtube with 25 degree bend 150mm from the head end of tube.
COLUMBUS Zona Bent 29er Downtube 750mm long- New Improved Spec!
This tube will accommodate 29ers and 26ers with long travel forks.Note: Many framebuilders think this tube is heat treated because of its dark color. It is not. A note from the manufacturer: "This tube comes in a dark unpolished finishing because its bend
doesn’t allow to properly polish it after bending. It is not heat treated."
Diameter: 38.1mm Wall Thickness 1.0-0.5.-0.8 Length: 750mm Bend angle 25 degrees 80mm from head end to center of bend radius The Butt length for the top portion of the tube is 240mm long. The butt extends approximately 90 past the apex of the bend. Lower Butt length: 100mm Radius of bend: 150mm
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