2025 Surly Bikes Ogre Base SM
Build
700C/29 in × 2.5 in
Stack and Reach vs. Category Trend
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Geometry
| Stack | 592mm |
| Reach | 395.5mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 406.4mm |
| Top Tube Length, Effective/Horizontal Center | 575mm |
| Top Tube Slope | 21.6deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 68mm |
| Bottom Bracket Height | 306.5mm |
| Chainstay Length | 440mm |
| Chainstay Length Horizontal | 434.7mm |
| Front-Center | 618.4mm |
| Front-Center Horizontal | 614.7mm |
| Wheelbase | 1049.4mm |
| Fork Offset/Rake | 45mm |
| Fork Length (Axle-To-Crown) | 445mm |
| Trail | 77.9mm high |
| Mechanical Trail | 73.8mm |
| Wheel Flop | 23.4mm |
| Standover Height | 763.5mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 73.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 136.5mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 1798.4mm |
| Crank Length | 170mm |
| Handlebar Width | 700mm |
| Stem Length | 70mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Flat Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 155 cm to 170 cm |
Source:https://surlybikes.com/products/ogre-fermented-plum