2019 Bird Bikes Zero29 130mm

Design
Flat Bar, Hardtail (Front suspension)
Frame
Aluminum
Features
Disc brake
Very upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Somewhat upright stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

M
ML
L
XL
Stack
652mm
661mm
661mm
670mm
Reach
436mm
460mm
482mm
507mm
Stack to Reach Ratio
1.5:1
1.44:1
1.37:1
1.32:1
Seat Tube Length, C-T
410mm
440mm
470mm
500mm
Top Tube Length, Effective/Horizontal HT Top
605mm
630mm
655mm
680mm
Top Tube Slope
25.2deg
22.3deg
18.9deg
16.4deg
Head Tube Angle
64.3deg
64.3deg
64.3deg
64.3deg
Seat Tube Angle
74deg
74deg
74deg
74deg
Head Tube Length
110mm
120mm
120mm
130mm
Bottom Bracket Drop
80mm
80mm
80mm
80mm
Bottom Bracket Height
297mm
297mm
297mm
297mm
Chainstay Length
435mm
435mm
440mm
440mm
Chainstay Length Horizontal
427.6mm
427.6mm
432.7mm
432.7mm
Front-Center
762.6mm
770.6mm
795.4mm
822.2mm
Front-Center Horizontal
758.4mm
766.4mm
791.3mm
818.3mm
Wheelbase
1186mm
1194mm
1224mm
1251mm
Fork Offset/Rake
42mm
42mm
42mm
42mm
Fork Length (Axle-To-Crown)
541mm
541mm
541mm
541mm
Trail
134.9mm
very high
134.9mm
very high
134.9mm
very high
134.9mm
very high
Mechanical Trail
121.5mm
121.5mm
121.5mm
121.5mm
Wheel Flop
52.7mm
52.7mm
52.7mm
52.7mm
Tire to Pedal Spindle
215.6mm
170 mm cranks
223.5mm
170 mm cranks
248.3mm
170 mm cranks
275.2mm
170 mm cranks
Pedal Spindle to Ground Clearance
127mm
170 mm cranks
127mm
170 mm cranks
127mm
170 mm cranks
127mm
170 mm cranks

130mm Build

M
ML
L
XL
Wheel Size
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
700C/29 in
622 mm BSD
Tire Width
2.6in
2.6in
2.6in
2.6in
Tire Width Max
2.6in
2.6in
2.6in
2.6in
Tire Outer Diameter
754.1mm
754.1mm
754.1mm
754.1mm
Bike Length with Tires
1940.1mm
1948.1mm
1978.1mm
2005.1mm
Crank Length
170mm
170mm
170mm
170mm
Handlebar Width
760mm
760mm
760mm
760mm
Stem Length
40mm
40mm
40mm
40mm

Published Sizing Recommendations

Height
161 cm
to
174 cm
170 cm
to
180 cm
178 cm
to
193 cm
188 cm
to

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Hardtail Trail MTB
Source:https://www.bird.bike/wp-content/uploads/2018/11/Zero-29-2019-Technical-Data-Sheet.svg