2022 Serk Titanium A21 650b wheels
- Category
- All-road/Gravel
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Titanium
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
S | M | L | XL | |
Stack | 548mm | 575mm | 597mm | 619mm |
Reach | 364mm | 377mm | 390mm | 403mm |
Stack to Reach Ratio | 1.51:1 | 1.53:1 | 1.53:1 | 1.54:1 |
Seat Tube Length, C-T | 485mm | 510mm | 535mm | 560mm |
Top Tube Length, Effective/Horizontal HT Top | 523mm | 549mm | 569mm | 594mm |
Top Tube Slope | 9.3deg | 9.4deg | 8.8deg | 8.4deg |
Head Tube Angle | 70deg | 70deg | 70deg | 70deg |
Seat Tube Angle | 74deg | 73.5deg | 73.5deg | 73deg |
Head Tube Length | 110mm | 139mm | 164mm | 188mm |
Bottom Bracket Drop | 75mm | 75mm | 73mm | 73mm |
Bottom Bracket Height | 264mm | 264mm | 266mm | 266mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 423.4mm | 423.4mm | 423.8mm | 423.8mm |
Front-Center | 589mm | 612mm | 633mm | 654mm |
Front-Center Horizontal | 584.6mm | 606.6mm | 628.2mm | 649.2mm |
Wheelbase | 1008mm | 1030mm | 1052mm | 1073mm |
Fork Offset/Rake | 45mm | 45mm | 45mm | 45mm |
Trail | 75.5mm high | 75.5mm high | 75.5mm high | 75.5mm high |
Mechanical Trail | 70.9mm | 70.9mm | 70.9mm | 70.9mm |
Wheel Flop | 24.3mm | 24.3mm | 24.3mm | 24.3mm |
Tire to Pedal Spindle | 80mm 170 mm cranks | 103mm 170 mm cranks | 124mm 170 mm cranks | 145mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 94mm 170 mm cranks | 94mm 170 mm cranks | 96mm 170 mm cranks | 96mm 170 mm cranks |
650b wheels Build
S | M | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 47mm | 47mm | 47mm | 47mm |
Tire Width Max | 55mm | 55mm | 55mm | 55mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1686mm | 1708mm | 1730mm | 1751mm |
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
All-road/GravelSource:https://www.serk.cc/a21/