Nova Cycles Supply Inc. :: TUBES STEEL :: ZONA EXTERNAL BUTT SEAT TUBE 550

ZONA EXTERNAL BUTT SEAT TUBE 550

ZONA EXTERNAL BUTT SEAT TUBE 550

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ZONA EXTERNAL BUTT SEAT TUBE 28.6mm

DxW1/W2/W3xL = 28.6 x 0.8/0.6/1.1 x 550

* Columbus calls out 1.2mm wall but the tube measures 1.1mm*

Ext Butt Dia= 29.6mm  Takes a 27.2mm seat pin

B1/B2 = 245/75

T1/T2 = 40/40

Columbus PN# ZON113550

 

The externally butted seat works great for non-lugged applications.

Filet brazing, or TIG benefit from the thicker wall at the top of the seat mast. Fights distortion and allows direct joining without reinforcements of any kind.  Outside diameter at the top is 29.6mm. The rest of the length of the tube is 28.6mm o.d.

AVAILABLE IN 550mm and 620mm

 

Details
SKU COL_KMST_28.6_550
Quantity in stock 26 item(s) available
Weight 1.67 lbs
New SKU 200548
 
Price: $26.16
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4111 Citrus Ave #8 Rocklin, CA 95677 U.S.A.
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