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 | 583.4mm | 597mm +13.6mm |
Reach | 395.5mm | 390mm -5.5mm |
Stack to Reach Ratio | 1.48:1 | 1.53:1 |
Seat Tube Length, C-T | 490mm | 535mm +45mm |
Top Tube Length, Effective/Horizontal HT Top | 560mm | 569mm +9mm |
Top Tube Slope | 11.9deg | 8.8deg -3.1deg |
Head Tube Angle | 71.25deg | 70deg -1.25deg |
Seat Tube Angle | 74.25deg | 73.5deg -0.75deg |
Head Tube Length | 140mm | 164mm +24mm |
Bottom Bracket Drop | 78mm | 73mm -5mm |
Bottom Bracket Height | 273mm | 266mm -7mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 422.9mm | 423.8mm +0.9mm |
Front-Center | 622.6mm | 633mm +10.4mm |
Front-Center Horizontal | 617.7mm | 628.2mm +10.5mm |
Wheelbase | 1040.6mm | 1052mm +11.4mm |
Fork Offset/Rake | 48mm | 45mm -3mm |
Fork Length (Axle-To-Crown) | 410mm | — |
Trail | 68.5mm high | 75.5mm +7mm high |
Mechanical Trail | 64.8mm | 70.9mm +6.1mm |
Wheel Flop | 20.8mm | 24.3mm +3.5mm |
Standover Height | 808mm | — |
Tire to Pedal Spindle | 101.6mm 170 mm cranks | 124mm +22.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 103mm 170 mm cranks | 96mm -7mm 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 | 1742.6mm | 1730mm -12.6mm |
| 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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