2021 Koga Colmaro Extreme M
Build
650B/27.5 in × 47 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 577mm |
| Reach | 378mm |
| Stack to Reach Ratio | 1.53:1 |
| Seat Tube Length, Unknown | 500mm |
| Top Tube Length, Effective/Horizontal Unknown | 561mm |
| Top Tube Slope | 10.7deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 72.5deg |
| Head Tube Length | 150mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 264mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 428.5mm |
| Front-Center | 603.1mm |
| Front-Center Horizontal | 598.5mm |
| Wheelbase | 1026.9mm |
| Fork Offset/Rake | 45mm |
| Trail | 69.1mm high |
| Mechanical Trail | 65.4mm |
| Wheel Flop | 21.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 94.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 94mm |
Extreme Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1704.9mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Aluminum |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 170 cm to 182 cm |
Source:KOGA Bicycles