2020 Brother Cycles Stroma Frameset

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

xSmall
Small
Medium
Large
xLarge
Stack
532mm
550mm
563mm
585mm
604mm
Reach
369mm
377mm
385mm
393mm
402mm
Stack to Reach Ratio
1.44:1
1.46:1
1.46:1
1.49:1
1.5:1
Seat Tube Length, C-T
500mm
520mm
540mm
560mm
580mm
Top Tube Length, Effective/Horizontal HT Top
522mm
540mm
557mm
572mm
587mm
Top Tube Length, Effective/Horizontal Unknown
510mm
526mm
542mm
557mm
572mm
Top Tube Slope
5.8deg
5.6deg
4.9deg
5.1deg
4.9deg
Head Tube Angle
71deg
72deg
72.5deg
72.5deg
72.5deg
Seat Tube Angle
74deg
73.5deg
73deg
73deg
73deg
Head Tube Length
110mm
125mm
140mm
160mm
180mm
Bottom Bracket Drop
70mm
70mm
70mm
70mm
70mm
Bottom Bracket Height
274mm
274mm
274mm
274mm
274mm
Chainstay Length
420mm
420mm
420mm
420mm
420mm
Chainstay Length Horizontal
414.1mm
414.1mm
414.1mm
414.1mm
414.1mm
Front-Center
580.1mm
585.1mm
592mm
606.9mm
621.8mm
Front-Center Horizontal
575.9mm
580.9mm
587.9mm
602.9mm
617.9mm
Wheelbase
990mm
995mm
1002mm
1017mm
1032mm
Fork Offset/Rake
45mm
45mm
45mm
45mm
45mm
Fork Length (Axle-To-Crown)
381mm
381mm
381mm
381mm
381mm
Trail
70.9mm
high
64.5mm
mid/​neutral
61.3mm
mid/​neutral
61.3mm
mid/​neutral
61.3mm
mid/​neutral
Mechanical Trail
67mm
61.3mm
58.4mm
58.4mm
58.4mm
Wheel Flop
21.8mm
18.9mm
17.6mm
17.6mm
17.6mm
Tire to Pedal Spindle
66.1mm
170 mm cranks
71.1mm
170 mm cranks
78mm
170 mm cranks
92.9mm
170 mm cranks
107.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
104mm
170 mm cranks
104mm
170 mm cranks
104mm
170 mm cranks
104mm
170 mm cranks
104mm
170 mm cranks

Frameset Build

xSmall
Small
Medium
Large
xLarge
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
700C/29 in
622 mm BSD
Tire Width
33mm
33mm
33mm
33mm
33mm
Tire Width Max
33mm
33mm
33mm
33mm
33mm
Tire Outer Diameter
688mm
688mm
688mm
688mm
688mm
Bike Length with Tires
1678mm
1683mm
1690mm
1705mm
1720mm

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
Endurance Road
Source:https://www.brothercycles.com/shop/frames/stroma/