2025 OPEN Cycle U.P. Base S
Build
700C/29 in × 40 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of OPEN Cycle U.P.
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 522mm |
| Reach | 365mm |
| Stack to Reach Ratio | 1.43:1 |
| Seat Tube Length, C-TTT | 520mm |
| Top Tube Length, Effective/Horizontal HT Top | 528mm |
| Top Tube Slope | 0.8deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 281mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 414.1mm |
| Front-Center | 592mm |
| Front-Center Horizontal | 587.9mm |
| Wheelbase | 1002mm |
| Fork Offset/Rake | 50mm |
| Trail | 77.9mm high |
| Mechanical Trail | 72.9mm |
| Wheel Flop | 25.5mm |
| Standover Height | 743mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 111mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 40mm |
| Tire Outer Diameter | 702mm |
| Bike Length with Tires | 1704mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 2 in to 5 ft 8 in |
Source:https://opencycle.com/eu-en/upper-20