2026 Speedclan STIFFAF II Base S
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 555mm |
| Reach | 384mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, Unknown | 500mm |
| Top Tube Length, Effective/Horizontal Unknown | 529mm |
| Top Tube Slope | 8deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 133mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 266mm |
| Chainstay Length | 410mm |
| Chainstay Length Horizontal | 403.5mm |
| Front-Center | 585.1mm |
| Front-Center Horizontal | 580.6mm |
| Wheelbase | 984mm |
| Fork Offset/Rake | 45mm |
| Trail | 56.6mm mid/neutral |
| Mechanical Trail | 54.1mm |
| Wheel Flop | 15.8mm |
| Standover Height | 760mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 76.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 96mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1662mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| PBH | 165 cm to 175 cm |
Source:speedclan.cc