2022 Sour Bicycles Big Fun Base

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Suspension
160mm fork travel, 25% sag
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

S
M
L
XL
Stack
620mm
629.4mm
638.4mm
647.3mm
Reach
440mm
465mm
490mm
525mm
Stack to Reach Ratio
1.41:1
1.35:1
1.3:1
1.23:1
Seat Tube Length, Unknown
370mm
400mm
430mm
470mm
Top Tube Length, Effective/Horizontal Unknown
578mm
605mm
631mm
668mm
Top Tube Slope
26.3deg
23.3deg
20.5deg
16.7deg
Head Tube Angle
63.5deg
63.5deg
63.5deg
63.5deg
Seat Tube Angle
76.5deg
76.5deg
76.5deg
76.5deg
Head Tube Length
90mm
100mm
110mm
120mm
Bottom Bracket Drop
62.5mm
62.5mm
62.5mm
62.5mm
Bottom Bracket Height
314.5mm
314.5mm
314.5mm
314.5mm
Chainstay Length
430mm
430mm
430mm
430mm
Chainstay Length Horizontal
425.4mm
425.4mm
425.4mm
425.4mm
Front-Center
767.1mm
797mm
825.9mm
864.8mm
Front-Center Horizontal
764.6mm
794.6mm
823.6mm
862.6mm
Wheelbase
1190mm
1220mm
1249mm
1288mm
Fork Offset/Rake
51mm
51mm
51mm
51mm
Fork Length, Unknown
551mm
551mm
551mm
551mm
Trail
131mm
very high
131mm
very high
131mm
very high
131mm
very high
Mechanical Trail
117.2mm
117.2mm
117.2mm
117.2mm
Wheel Flop
52.3mm
52.3mm
52.3mm
52.3mm
Tire to Pedal Spindle
220.1mm
170 mm cranks
250mm
170 mm cranks
278.9mm
170 mm cranks
317.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
144.5mm
170 mm cranks
144.5mm
170 mm cranks
144.5mm
170 mm cranks
144.5mm
170 mm cranks

Base Build

S
M
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
1944.1mm
1974.1mm
2003.1mm
2042.1mm

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://sour.bike/en/please-welcome-the-big-fun/