2026 Jan Janssen Sector Base M
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 | 586mm |
| Reach | 370mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 530mm |
| Top Tube Length, Effective/Horizontal HT Top | 552mm |
| Top Tube Slope | 8.5deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 150mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 286mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 424.3mm |
| Front-Center | 599.8mm |
| Front-Center Horizontal | 595.7mm |
| Wheelbase | 1020mm |
| Fork Offset/Rake | 45mm |
| Trail | 75mm high |
| Mechanical Trail | 70.9mm |
| Wheel Flop | 23.1mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 73.8mm |
| 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 | 1732mm |
| 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