2023 POSST Oban Base 56
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of POSST Oban
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 575mm |
| Reach | 390mm |
| Stack to Reach Ratio | 1.47:1 |
| Seat Tube Length, C-T | 540mm |
| Top Tube Length, Effective/Horizontal HT Top | 560mm |
| Top Tube Slope | 6deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 161mm |
| Bottom Bracket Drop | 68mm |
| Bottom Bracket Height | 271mm |
| Chainstay Length | 412mm |
| Chainstay Length Horizontal | 406.4mm |
| Front-Center | 594mm |
| Front-Center Horizontal | 589.7mm |
| Wheelbase | 996mm |
| Fork Offset/Rake | 43mm |
| Fork Length, Unknown | 370mm |
| Trail | 58.7mm mid/neutral |
| Mechanical Trail | 56.1mm |
| Wheel Flop | 16.4mm |
| Standover Height | 808mm |
| Tire to Pedal Spindle Distance With 172.5 mm cranks | 82.5mm |
| Pedal Spindle to Ground Clearance With 172.5 mm cranks | 98.5mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1674mm |
| Crank Length | 172.5mm |
| Handlebar Width | 44mm |
| Stem Length | 100mm |
| Stem Angle | 8deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 178 cm to 183 cm |
Source:https://www.posst.bike/oban