2026 Koba Protool Base
- Category
- Performance Road
- Design
- Drop Bar, Rigid, non-suspension corrected
- Frame
- Carbon/Composite
- Fork
- Carbon/Composite
- Features
- Disc brake
Geometry
XS | S | M | L | XL | |
Stack | 515mm | 526mm | 544mm | 565mm | 589mm |
Reach | 383mm | 387mm | 391mm | 397mm | 402mm |
Stack to Reach Ratio | 1.34:1 | 1.36:1 | 1.39:1 | 1.42:1 | 1.47:1 |
Seat Tube Length, C-C | 431mm | 462mm | 481mm | 501mm | 522mm |
Top Tube Length, Effective/Horizontal Center | 516mm | 538mm | 547mm | 564mm | 576mm |
Head Tube Angle | 71.75deg | 72.5deg | 73deg | 73.5deg | 73.5deg |
Seat Tube Angle | 75.5deg | 74deg | 74deg | 73.5deg | 73.5deg |
Head Tube Length | 115mm | 126mm | 143mm | 163mm | 190mm |
Bottom Bracket Drop | 72mm | 70mm | 70mm | 70mm | 68mm |
Bottom Bracket Height | 267mm | 269mm | 269mm | 269mm | 271mm |
Chainstay Length Horizontal | 408mm | 408mm | 408mm | 408mm | 408mm |
Front-Center | 573.5mm | 576.3mm | 580.2mm | 589.2mm | 600.9mm |
Front-Center Horizontal | 569mm | 572mm | 576mm | 585mm | 597mm |
Wheelbase | 977mm | 980mm | 984mm | 993mm | 1005mm |
Fork Offset/Rake | 44mm | 44mm | 44mm | 44mm | 44mm |
Fork Length (Axle-To-Crown) | 368mm | 368mm | 368mm | 368mm | 368mm |
Trail | 65.5mm high | 60.8mm mid/neutral | 57.6mm mid/neutral | 54.5mm mid/neutral | 54.5mm mid/neutral |
Mechanical Trail | 62.2mm | 57.9mm | 55.1mm | 52.3mm | 52.3mm |
Wheel Flop | 19.5mm | 17.4mm | 16.1mm | 14.9mm | 14.9mm |
Tire to Pedal Spindle | 64.5mm 170 mm cranks | 67.3mm 170 mm cranks | 71.2mm 170 mm cranks | 80.2mm 170 mm cranks | 91.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 97mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 99mm 170 mm cranks | 101mm 170 mm cranks |
Base Build
XS | S | M | L | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 28mm | 28mm | 28mm | 28mm | 28mm |
Tire Outer Diameter | 678mm | 678mm | 678mm | 678mm | 678mm |
Bike Length with Tires | 1655mm | 1658mm | 1662mm | 1671mm | 1683mm |
Published Sizing Recommendations
Height | 153 cm to 162 cm | 162 cm to 170 cm | 170 cm to 178 cm | 178 cm to 186 cm | 186 cm to 210 cm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Performance RoadSource:https://koba.ch/de/bike_configurations/58155?modal=true