2026 CTM Bikes Koyuk CR Base 520
Build
700C/29 in × 45 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of CTM Bikes Koyuk CR
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 547mm |
| Reach | 370mm |
| Stack to Reach Ratio | 1.48:1 |
| Seat Tube Length, Unknown | 490mm |
| Top Tube Length, Effective/Horizontal Center | 537mm |
| Top Tube Slope | 8.7deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 70.8mm |
| Bottom Bracket Height | 285.3mm |
| Chainstay Length | 435mm |
| Chainstay Length Horizontal | 429.2mm |
| Front-Center | 597mm |
| Front-Center Horizontal | 592.8mm |
| Wheelbase | 1022mm |
| Fork Offset/Rake | 55mm |
| Fork Length, Unknown | 399mm |
| Trail | 64.4mm mid/neutral |
| Mechanical Trail | 60.9mm |
| Wheel Flop | 19.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 71mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 115.3mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 45mm |
| Tire Outer Diameter | 712mm |
| Bike Length with Tires | 1734mm |
| 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 | 160 cm to 170 cm |
Source:www.ctm.sk