2020 OPEN Cycle U.P.P.E.R. Base S
Build
650B/27.5 in × 2.1 in
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of OPEN Cycle U.P.P.E.R.
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-T | 520mm |
| Top Tube Length, Effective/Horizontal HT Top | 528mm |
| Top Tube Slope | 2.9deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 275.3mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 414.1mm |
| Front-Center | 592mm |
| Front-Center Horizontal | 587.9mm |
| Wheelbase | 1002mm |
| Fork Offset/Rake | 50mm |
| Trail | 75.7mm high |
| Mechanical Trail | 70.9mm |
| Wheel Flop | 24.8mm |
| Standover Height | 743mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 76.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 105.3mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 690.7mm |
| Bike Length with Tires | 1692.7mm |
| 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/UP