Bike-on-Bike
Default Config
Default Config
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Serk Titanium A21
Geometry
Stack | 568.2mm | 575mm +6.8mm |
Reach | 387.4mm | 377mm -10.4mm |
Stack to Reach Ratio | 1.47:1 | 1.53:1 |
Seat Tube Length, C-T | 480mm | 510mm +30mm |
Top Tube Length, Effective/Horizontal HT Top | 545mm | 549mm +4mm |
Top Tube Slope | 11.6deg | 9.4deg -2.2deg |
Head Tube Angle | 71deg | 70deg -1deg |
Seat Tube Angle | 74.5deg | 73.5deg -1deg |
Head Tube Length | 125mm | 139mm +14mm |
Bottom Bracket Drop | 78mm | 75mm -3mm |
Bottom Bracket Height | 273mm | 264mm -9mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 422.9mm | 423.4mm +0.5mm |
Front-Center | 612mm | 612mm +0mm |
Front-Center Horizontal | 607mm | 606.6mm -0.4mm |
Wheelbase | 1029.9mm | 1030mm +0.1mm |
Fork Offset/Rake | 48mm | 45mm -3mm |
Fork Length (Axle-To-Crown) | 410mm | — |
Trail | 70.1mm high | 75.5mm +5.4mm high |
Mechanical Trail | 66.3mm | 70.9mm +4.6mm |
Wheel Flop | 21.6mm | 24.3mm +2.7mm |
Standover Height | 796mm | — |
Tire to Pedal Spindle | 91mm 170 mm cranks | 103mm +12mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 103mm 170 mm cranks | 94mm -9mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 40mm | 47mm +7mm |
Tire Outer Diameter | 702mm | 678mm -24mm |
Bike Length with Tires | 1731.9mm | 1708mm -23.9mm |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Aluminum | Titanium |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.rosebikes.com/p/rose-backroad-al-eq-2725772 | https://www.serk.cc/a21/ |
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