2025 FiftyOne Sika Base XL
Build
700C/29 in × 40 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of FiftyOne Sika
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 603mm |
| Reach | 400mm |
| Stack to Reach Ratio | 1.51:1 |
| Seat Tube Length, C-T | 550mm |
| Top Tube Length, Effective/Horizontal Center | 584mm |
| Top Tube Slope | 7.8deg |
| Head Tube Angle | 72.8deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 175.5mm |
| Bottom Bracket Drop | 78mm |
| Bottom Bracket Height | 273mm |
| Chainstay Length | 422mm |
| Chainstay Length Horizontal | 414.7mm |
| Front-Center | 618mm |
| Front-Center Horizontal | 612.3mm |
| Wheelbase | 1027mm |
| Fork Offset/Rake | 48mm |
| Fork Length (Axle-To-Crown) | 388mm |
| Trail | 58.4mm mid/neutral |
| Mechanical Trail | 55.8mm |
| Wheel Flop | 16.5mm |
| Standover Height | 824.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 97mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 103mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1729mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://fiftyonebikes.com/wp-content/uploads/2024/04/FiftyOne-Sika-Geo-Bar-Stem-Table-.pdf