2026 Koba Protool Base S
Build
700C/29 in × 28 mm
Insights
Somewhat aggressive stack and reach vs trend of performance road bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 526mm |
| Reach | 387mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-C | 462mm |
| Top Tube Length, Effective/Horizontal Center | 538mm |
| Head Tube Angle | 72.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 126mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 269mm |
| Chainstay Length Horizontal | 408mm |
| Front-Center | 576.3mm |
| Front-Center Horizontal | 572mm |
| Wheelbase | 980mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 368mm |
| Trail | 60.8mm mid/neutral |
| Mechanical Trail | 57.9mm |
| Wheel Flop | 17.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 67.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 99mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1658mm |
| 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 | 162 cm to 170 cm |
Source:https://koba.ch/de/bike_configurations/58155?modal=true