Bike-on-Bike
Default Config
Default Config
Insights
Average stack and reach vs trend of progressive gravel bikes
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Serk Titanium A21
Geometry
Stack | 613mm | 619mm +6mm |
Reach | 427mm | 403mm -24mm |
Stack to Reach Ratio | 1.44:1 | 1.54:1 |
Seat Tube Length, C-T | — | 560mm |
Seat Tube Length, Unknown | 540mm | — |
Top Tube Length, Effective/Horizontal HT Top | — | 594mm |
Top Tube Length, Effective/Horizontal Unknown | 609mm | — |
Top Tube Slope | 9.3deg | 8.4deg -0.9deg |
Head Tube Angle | 71.5deg | 70deg -1.5deg |
Seat Tube Angle | 73.5deg | 73deg -0.5deg |
Head Tube Length | 187mm | 188mm +1mm |
Bottom Bracket Drop | 75mm | 73mm -2mm |
Bottom Bracket Height | 276mm | 266mm -10mm |
Chainstay Length | 425mm | 430mm +5mm |
Chainstay Length Horizontal | 418.3mm | 423.8mm +5.5mm |
Front-Center | 665.9mm | 654mm -11.9mm |
Front-Center Horizontal | 661.7mm | 649.2mm -12.5mm |
Wheelbase | 1080mm | 1073mm -7mm |
Fork Offset/Rake | 51.8mm | 45mm -6.8mm |
Trail | 62.8mm mid/neutral | 75.5mm +12.7mm high |
Mechanical Trail | 59.5mm | 70.9mm +11.4mm |
Wheel Flop | 18.9mm | 24.3mm +5.4mm |
Standover Height | 838mm | — |
Tire to Pedal Spindle | 142.4mm 172.5 mm cranks | 145mm +2.6mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 103.5mm 172.5 mm cranks | 96mm -7.5mm 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 | 1782mm | 1751mm -31mm |
Crank Length | 172.5mm | — |
Handlebar Width | 440mm | — |
Stem Length | 70mm | — |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Unknown | Titanium |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.canyon.com/it-it/bici-gravel/race/grail/cf/grail-cf-7/4149.html | https://www.serk.cc/a21/ |
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