Bike-on-Bike
Default Config
Default Config
Insights
Average 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 | 581mm | 575mm -6mm |
Reach | 380mm | 377mm -3mm |
Stack to Reach Ratio | 1.53:1 | 1.53:1 |
Seat Tube Length, C-T | 490mm | 510mm +20mm |
Top Tube Length, Effective/Horizontal HT Top | 552mm | 549mm -3mm |
Top Tube Slope | 12.1deg | 9.4deg -2.7deg |
Head Tube Angle | 71deg | 70deg -1deg |
Seat Tube Angle | 73.5deg | 73.5deg +0deg |
Head Tube Length | 130mm | 139mm +9mm |
Bottom Bracket Drop | 71mm | 75mm +4mm |
Bottom Bracket Height | 284mm | 264mm -20mm |
Chainstay Length | 430mm | 430mm +0mm |
Chainstay Length Horizontal | 424.1mm | 423.4mm -0.7mm |
Front-Center | 607.1mm | 612mm +4.9mm |
Front-Center Horizontal | 602.9mm | 606.6mm +3.7mm |
Wheelbase | 1027mm | 1030mm +3mm |
Fork Offset/Rake | 50mm | 45mm -5mm |
Trail | 69.4mm high | 75.5mm +6.1mm high |
Mechanical Trail | 65.6mm | 70.9mm +5.3mm |
Wheel Flop | 21.4mm | 24.3mm +2.9mm |
Tire to Pedal Spindle | 79.6mm 172.5 mm cranks | 103mm +23.4mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 111.5mm 172.5 mm cranks | 94mm -17.5mm 170 mm cranks |
Build
Wheel Size | 700C/29 in 622 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 44mm | 47mm +3mm |
Tire Outer Diameter | 710mm | 678mm -32mm |
Bike Length with Tires | 1737mm | 1708mm -29mm |
Crank Length | 172.5mm | — |
Handlebar Width | 420mm | — |
Stem Length | 90mm | — |
| Suspension Type | Rigid, non-suspension corrected | Rigid, non-suspension corrected |
| Bar Type | Drop Bar | Drop Bar |
| Frame Material | Carbon/Composite | Titanium |
| Fork Material | Carbon/Composite | Carbon/Composite |
| Brake Type | Disc | Disc |
Meta
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| Source | https://www.lapierrebikes.com/nl-en/o/crosshill-cf-60-s-2025/ | https://www.serk.cc/a21/ |
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