2026 Koba Protool Base XS
Build
700C/29 in × 28 mm
Insights
Somewhat aggressive stack and reach vs trend of performance road bikes
Design deviates from other sizes of Koba Protool
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 515mm |
| Reach | 383mm |
| Stack to Reach Ratio | 1.34:1 |
| Seat Tube Length, C-C | 431mm |
| Top Tube Length, Effective/Horizontal Center | 516mm |
| Head Tube Angle | 71.75deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 267mm |
| Chainstay Length Horizontal | 408mm |
| Front-Center | 573.5mm |
| Front-Center Horizontal | 569mm |
| Wheelbase | 977mm |
| Fork Offset/Rake | 44mm |
| Fork Length (Axle-To-Crown) | 368mm |
| Trail | 65.5mm high |
| Mechanical Trail | 62.2mm |
| Wheel Flop | 19.5mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 64.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 97mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1655mm |
| 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 | 153 cm to 162 cm |
Source:https://koba.ch/de/bike_configurations/58155?modal=true