2020 Brother Cycles Stroma Frameset
- Category
- Endurance Road
- 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 | 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 | Somewhat aggressive stack and reachvs category | Somewhat aggressive stack and reachvs category |
Geometry
xSmall | xSmall | Small | Small | Medium | Medium | Large | Large | xLarge | xLarge | |
Stack | 532mm | 532mm | 550mm | 550mm | 563mm | 563mm | 585mm | 585mm | 604mm | 604mm |
Reach | 369mm | 369mm | 377mm | 377mm | 385mm | 385mm | 393mm | 393mm | 402mm | 402mm |
Stack to Reach Ratio | 1.44:1 | 1.44:1 | 1.46:1 | 1.46:1 | 1.46:1 | 1.46:1 | 1.49:1 | 1.49:1 | 1.5:1 | 1.5:1 |
Seat Tube Length, C-T | 500mm | 500mm | 520mm | 520mm | 540mm | 540mm | 560mm | 560mm | 580mm | 580mm |
Top Tube Length, Effective/Horizontal HT Top | 522mm | 522mm | 540mm | 540mm | 557mm | 557mm | 572mm | 572mm | 587mm | 587mm |
Top Tube Length, Effective/Horizontal Unknown | 510mm | — | 526mm | — | 542mm | — | 557mm | — | 572mm | — |
Top Tube Length, Actual C-C | — | 510mm | — | 526mm | — | 542mm | — | 557mm | — | 572mm |
Top Tube Slope | 5.8deg | 5.8deg | 5.6deg | 5.6deg | 4.9deg | 4.9deg | 5.1deg | 5.1deg | 4.9deg | 4.9deg |
Head Tube Angle | 71deg | 71deg | 72deg | 72deg | 72.5deg | 72.5deg | 72.5deg | 72.5deg | 72.5deg | 72.5deg |
Seat Tube Angle | 74deg | 74deg | 73.5deg | 73.5deg | 73deg | 73deg | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 110mm | 110mm | 125mm | 125mm | 140mm | 140mm | 160mm | 160mm | 180mm | 180mm |
Bottom Bracket Drop | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm | 70mm |
Bottom Bracket Height | 274mm | 274mm | 274mm | 274mm | 274mm | 274mm | 274mm | 274mm | 274mm | 274mm |
Chainstay Length | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm | 420mm |
Chainstay Length Horizontal | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm | 414.1mm |
Front-Center | 580.1mm | 580.1mm | 585.1mm | 585.1mm | 592mm | 592mm | 606.9mm | 606.9mm | 621.8mm | 621.8mm |
Front-Center Horizontal | 575.9mm | 575.9mm | 580.9mm | 580.9mm | 587.9mm | 587.9mm | 602.9mm | 602.9mm | 617.9mm | 617.9mm |
Wheelbase | 990mm | 990mm | 995mm | 995mm | 1002mm | 1002mm | 1017mm | 1017mm | 1032mm | 1032mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm | 45mm |
Fork Length (Axle-To-Crown) | 381mm | 381mm | 381mm | 381mm | 381mm | 381mm | 381mm | 381mm | 381mm | 381mm |
Trail | 70.9mm high | 70.9mm high | 64.5mm mid/​neutral | 64.5mm mid/​neutral | 61.3mm mid/​neutral | 61.3mm mid/​neutral | 61.3mm mid/​neutral | 61.3mm mid/​neutral | 61.3mm mid/​neutral | 61.3mm mid/​neutral |
Mechanical Trail | 67mm | 67mm | 61.3mm | 61.3mm | 58.4mm | 58.4mm | 58.4mm | 58.4mm | 58.4mm | 58.4mm |
Wheel Flop | 21.8mm | 21.8mm | 18.9mm | 18.9mm | 17.6mm | 17.6mm | 17.6mm | 17.6mm | 17.6mm | 17.6mm |
Tire to Pedal Spindle | 66.1mm 170 mm cranks | 66.1mm 170 mm cranks | 71.1mm 170 mm cranks | 71.1mm 170 mm cranks | 78mm 170 mm cranks | 78mm 170 mm cranks | 92.9mm 170 mm cranks | 92.9mm 170 mm cranks | 107.8mm 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 | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks | 104mm 170 mm cranks |
Frameset Build
xSmall | xSmall | Small | Small | Medium | Medium | Large | Large | xLarge | 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 | 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 | 33mm | 33mm | 33mm | 33mm | 33mm |
Tire Width Max | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm | 33mm |
Tire Outer Diameter | 688mm | 688mm | 688mm | 688mm | 688mm | 688mm | 688mm | 688mm | 688mm | 688mm |
Bike Length with Tires | 1678mm | 1678mm | 1683mm | 1683mm | 1690mm | 1690mm | 1705mm | 1705mm | 1720mm | 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 ScaleCategory Trend
Endurance RoadSource:https://www.brothercycles.com/shop/frames/stroma/