2025 Flanders Cycles Bossberg Base

Design
Flat Bar, Full suspension
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Average stack and reachvs category
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Geometry

Small
Medium
Large
X Large
Stack
585mm
590mm
605mm
621mm
Reach
409mm
428mm
448mm
469mm
Stack to Reach Ratio
1.43:1
1.38:1
1.35:1
1.32:1
Seat Tube Length, Unknown
410mm
445mm
483mm
530mm
Top Tube Slope
20.1deg
16.4deg
13.6deg
10.3deg
Head Tube Angle
68deg
68deg
68deg
68deg
Seat Tube Angle
73.8deg
73.8deg
73.8deg
73.8deg
Head Tube Length
100mm
105mm
120mm
135mm
Bottom Bracket Drop
40mm
40mm
40mm
40mm
Bottom Bracket Height
328.2mm
328.2mm
328.2mm
328.2mm
Chainstay Length
438mm
438mm
438mm
438mm
Chainstay Length Horizontal
436.2mm
436.2mm
436.2mm
436.2mm
Front-Center
682mm
702mm
721.9mm
741.9mm
Front-Center Horizontal
680.8mm
700.8mm
720.8mm
740.8mm
Wheelbase
1117mm
1137mm
1157mm
1177mm
Fork Offset/Rake
47.9mm
46.9mm
41.3mm
34.4mm
Trail
97.1mm
very high
98.1mm
very high
104.2mm
very high
111.7mm
very high
Mechanical Trail
90mm
91mm
96.6mm
103.5mm
Wheel Flop
33.7mm
34.1mm
36.2mm
38.8mm
Tire to Pedal Spindle
143.9mm
170 mm cranks
163.8mm
170 mm cranks
183.8mm
170 mm cranks
203.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
158.2mm
170 mm cranks
158.2mm
170 mm cranks
158.2mm
170 mm cranks
158.2mm
170 mm cranks

Base Build

Small
Medium
Large
X 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
2.25in
2.25in
2.25in
2.25in
Tire Outer Diameter
736.3mm
736.3mm
736.3mm
736.3mm
Bike Length with Tires
1853.3mm
1873.3mm
1893.3mm
1913.3mm

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://flanderscycles.com.au/product/bossberg/