ZONA

Asymmetric reinforced tubes for top of the range, custom, competitive road and MTB frames.

Material:

  • 25CrMo4 25CrMo4 seamless steel: the chemical composition of this steel, specifying a higher percentage of Chromium, gives to the material good resistance properties to overheating. The formation of carbides prevents the grain enlargement:
    the steel maintains its properties during brazing and welding, even in the malleable raw state it features excellent mechanical characteristics.
  • Mechanical characteristics: UTS=800MPa, Ys=760MPa, Ap5 =12%
    Suggested filler material for TIG welding: OK TIGROD 13.12 (AWS 5.28 ER 80S-G)
    Suggested material for brazing: Castoline Silver Alloy 38230
    Columbus 25CrMo4 is utilized for the production of the Zona, 29r and FAT tubesets.

Characteristics of the Zona Tubes

  • Non symmetrial tubes with cylindrical butts.
  • Moderate weight and notable strength thanks to the newshapes, which are introduced for the first time also for the tubes of the rear triangle.
  • Elevated reliability and fatigue life.

Reasons to Choose Zona

  • Athlete: Zona is the design which finally allows for a reasonable compromise between weight, strength and life of the frame. Thanks to the particular operations to which Nivacrom is subjected and to the new sizes that also stiffen the frame laterally by means of suitable grooves, it is possible to obtain an end product with good characteristics of lightness and high efficiency.
  • Framebuilder: Zona allows for the construction of reliable frames which are easy to realize, both in the working of the tubes, the welding and the squaring operations of the frame. Zona takes full advantage of the characteristics of Nivacrom steel which has been especially developed for cycling.


The weight refers to sized and mitered tube for a 54cm c-c road frame or a 18" (45.5cm) ATB frame

            Max shortage mm
                    Cutting area   
a Tube Stocked r Tube available to special order only
CODE AVAILABILITY DIMENS. (mm) SPECIFICATIONS WEIGHT TUBE
ZONM11600
TOP TUBE
a 28.6
L=600
0.7/0.5/0.7
Also now available in 0.8/0.5/0.8

Round double butted
205 g zonm11600
ZONL11600
TOP TUBE
a 31,7
L=600
0.7/0.5/0.7Also available in 'I' Megatube

Round double butted
241 g zonl11600
ZONM12650
DOWN TUBE
a 31.7
L=650
0.7/0.5/0.7
Also now available in 0.8/0.5/0.8 x670mm
Round double butted 244 g zonl11600
ZONL12670
TUBO OBLIQUO
DOWN TUBE
a 35
L=670
0.7/0.5/0.7
Also now available in 0.8/0.5/0.8. Check latest Columbus list for butting
Round double butted 271 g zonl12670
ZONA12670
TUBO OBLIQUO
DOWN TUBE
a 38
L=670
0.7/0.5/0.7 Also available in 'D' Megatube
Round double butted 337 g ZONA12670
ZONH12670
DOWN TUBE
a 42
L=670
0.7/0.5/0.7
Also available in 'L' Megatube
Round double butted 373 g ZONH12670
ZONI13635
SEAT  TUBE
a 28.6
L=635
0.8/0.6
Round single butted 247 g zoni13635
ZON113620
SEAT  TUBE
a 28.6
L=620
1.2/0.6/0.8
Double butted 237 g zon113620
ZONI14OV410
CHAIN STAY
a 22.2
L=410
0.7
Round/oval/Round tapered

Also available without central ovalization, so as to be suitable for indenting
152 g zoni14to410
ZON114OV425
CHAIN STAY 

 

a 29.9/16
L=425
0.8/0.6
Oval tapered

Also available as 'S' or single bend for ATB or Road. MTB assumed if not specified.

164 g
ZON114OV410
CHAIN STAY
r 29.9/16
L=410
0.8
Oval tapered 188 g
ZON615560
SEAT STAY
a 16
L=560
0.7
Round tapered. 

Also available double tapered

127 g ZON615560
ZON915560
SEAT STAY

 

a 19
L=560
0.7
Round tapered

Also available as 'S' bend for ATB or Road. MTB assumed if not specified.

140 g ZON915560
OR0G18180
HEAD TUBE
a 32.4
L=180
1.25
Round

Also available in 600mm lengths
111 g OROG18180
SLOI18180
HEAD TUBE
a 31.7
L=180
1
Round

Also available in 600mm lengths

86 g SLOI18180

 

TOP TUBE DOWN TUBE
From round tubes... 31.7 28.6 42 38 35
To MEGATUBE a a a a a

 

CHAIN STAY SEAT STAY
From round tubes... 24 22.2 19
To MEGATUBE a r
a  

 

 

 

Suggested set
Road frame
TT ZONM11600 28.6 0.7/0.5/0.7
DT ZONM12650 31.7 0.7/0.5/0.7
ST ZONI13635 28.6 0.8/0.6
CS ZON114OV425 29.9/16 oval 0.8/0.6
SS ZON615560 16 0.7
HT SL0I18180 31.7 1.0
FB SL0I16V1 28/19 0.9
SC SL0I17 25.4 2.3/1.55
Weight of 8 tubes road frame for 54 cm center to center = 1364 g

 

 Suggested set
ATB frame 
TT ZONL11600 31.7 0.7/0.5/0.7
DT ZONL12670 35 0.7/0.5/0.7
ST ZON113620 28.6 1.2/0.6/0.8
CS ZON114OV425.133 29.9/16 'S' Bend 0.8/0.6
SS ZON915560.133 19 'S' Bend 0.7
HT CYRK18180 36 1.1
FB NVR016U3V 30/21 1.2/0.8
SC GARM17 28.6 2.0/1.55
Weight of 8 tubes ATB frame for 45.5 cm (18") = 1182 g