2022 Bird Bikes Forge 160mm Fork

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Suspension
160mm fork travel, 30% sag
Features
Disc brake
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category
Somewhat upright stack and reachvs category

Geometry

Medium
Medium Long
Large
Extra Large
Stack
654mm
663mm
672mm
681mm
Reach
449mm
473mm
496mm
518mm
Stack to Reach Ratio
1.46:1
1.4:1
1.35:1
1.31:1
Seat Tube Length, C-T
395mm
420mm
445mm
470mm
Top Tube Length, Effective/Horizontal HT Top
605mm
630mm
655mm
680mm
Head Tube Angle
65.2deg
65.2deg
65.2deg
65.2deg
Effective Seat Tube Angle, ETT HT Top
76.2deg
76.2deg
76.2deg
76.2deg
Seat Tube Exit Angle
74.4deg
74.4deg
74.4deg
74.4deg
Head Tube Length
100mm
110mm
120mm
130mm
Bottom Bracket Drop
83mm
83mm
83mm
83mm
Bottom Bracket Height
294mm
294mm
294mm
294mm
Chainstay Length
430mm
430mm
435mm
435mm
Chainstay Length Horizontal
421.9mm
421.9mm
427mm
427mm
Front-Center
765.6mm
792.5mm
819.2mm
846.1mm
Front-Center Horizontal
761.1mm
788.1mm
815mm
842mm
Wheelbase
1183mm
1210mm
1242mm
1269mm
Fork Offset/Rake
42mm
42mm
42mm
42mm
Fork Length (Axle-To-Crown)
523mm
523mm
523mm
523mm
Trail
128mm
very high
128mm
very high
128mm
very high
128mm
very high
Mechanical Trail
116.2mm
116.2mm
116.2mm
116.2mm
Wheel Flop
48.7mm
48.7mm
48.7mm
48.7mm
Tire to Pedal Spindle
218.6mm
170 mm cranks
245.4mm
170 mm cranks
272.2mm
170 mm cranks
299mm
170 mm cranks
Pedal Spindle to Ground Clearance
124mm
170 mm cranks
124mm
170 mm cranks
124mm
170 mm cranks
124mm
170 mm cranks

160mm Fork Build

Medium
Medium Long
Large
Extra Large
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
1937.1mm
1964.1mm
1996.1mm
2023.1mm

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
Source:https://www.bird.bike/wp-content/uploads/2022/03/Forge-Full-1.png