2026 Jan Janssen Sector Base S
Build
700C/29 in × 45 mm
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Jan Janssen Sector
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 552mm |
| Reach | 362mm |
| Stack to Reach Ratio | 1.52:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal HT Top | 536mm |
| Top Tube Slope | 8.1deg |
| Head Tube Angle | 69.5deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 286mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 424.3mm |
| Front-Center | 595.9mm |
| Front-Center Horizontal | 591.7mm |
| Wheelbase | 1016mm |
| Fork Offset/Rake | 45mm |
| Trail | 85.1mm very high |
| Mechanical Trail | 79.7mm |
| Wheel Flop | 27.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 69.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 116mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 45mm |
| Tire Outer Diameter | 712mm |
| Bike Length with Tires | 1728mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.janjanssen.nl/fiets/sector/?v=1a13105b7e4e